Do you know what are the ways to deal with concrete pouring defects?
In construction projects, such as the construction of high-rise buildings, bridges and roads around us, there is a key step, that is, concrete pouring. Concrete pouring is directly related to the stability, durability and safety of buildings.
Concrete pouring can sometimes be less than perfect for various reasons, such as small holes like honeycombs, pockmarked dots, and even small holes and exposed steel bars.
These seemingly inconspicuous problems can actually affect the "appearance" of our buildings, and worse, they can also quietly weaken the structural strength and durability of buildings. Therefore, it is particularly important to find and deal with these defects in concrete pouring in time.
In the following content, we will take you into this magical world, and learn the mystery of how to deal with these concrete pouring defects, so as to help you easily deal with various problems.
Whether you're an architecture enthusiast or just curious about the topic, read on to discover how to make concrete more perfect, and how to make our buildings stronger and more beautiful!
01
Treatment and prevention methods of concrete hemp surface
1. Concrete surface surface phenomenon:
In construction engineering, we sometimes encounter local slurry deficiency, roughness, small pits, pittings or bubbles on the concrete surface, which is called hemp surface. Although in this case, the reinforcement inside the concrete is not exposed, this surface defect is still a cause for concern.
2. Professional analysis of the causes of concrete matte surface:
Concrete matte surface is a common quality problem in building construction, and its causes are varied, mainly involving formwork treatment, concrete pouring and vibration. The following is a professional analysis of the causes of concrete matte surface:
(1) The surface condition of the template is not good
The surface roughness of the formwork is too high or there are hard cement slurry scales, impurities, etc. that are not cleaned, which will cause the concrete surface to be damaged during the contact between the concrete and the formwork, and the matte surface will appear after the formwork is removed.
(2) The template is not sufficiently wet
Before pouring concrete, if the formwork is not fully wetted, its water absorption performance will cause the moisture of the concrete surface layer in contact with it to be quickly absorbed, so that the local water loss of the concrete is too fast, and the hemp surface is formed.
(3) The seam of the formwork is not tight
The gap is not tight when the template is spliced, which will lead to local slurry leakage in the pouring process. These leaked slurries, after solidifying, can form irregular pitting on the surface of the concrete.
(4) Improper use of template release agent
The formwork separator is unevenly painted, or the local brush is missed and failed, so that the concrete is bonded with the formwork during the solidification process. When the mold is removed, the bonded part is torn, resulting in a matte surface on the concrete surface.
(5) The concrete vibration is insufficient
In the process of concrete pouring, if the vibration is not solid, the air bubbles inside the concrete cannot be effectively discharged, and these air bubbles gather and solidify on the surface of the formwork, and finally form pitting after the mold is removed.
Understanding these causes can help to take precautions during construction to avoid the appearance of concrete matte surfaces, thereby improving the appearance quality and durability of concrete structures.
3. Prevention and control measures for hemp surface in concrete construction
In concrete construction, in order to ensure the quality of the project and the performance of concrete, a series of prevention and control measures must be taken. The following are professional prevention and control measures for several key links:
(1) Template cleaning treatment:
Before pouring concrete, the formwork surface must be thoroughly cleaned to ensure that there is no dry cement mortar, oil stains or other build-ups. The presence of these impurities can seriously affect the cohesiveness and surface quality of freshly poured concrete.
(2) Template pre-wetting and sealing:
Before pouring concrete, the formwork should be fully pre-wet to prevent the moisture in the concrete from being absorbed by the formwork, resulting in premature drying and cracking of the concrete. At the same time, the gaps of the formwork should be tightly sealed with linoleum paper, putty or special sealing materials to prevent the leakage of concrete slurry.
(3) Use a high-efficiency template release agent:
Choose a long-lasting, stable formwork release agent and ensure that it is evenly applied to the surface of the formwork, and there are no omissions. The main function of the separator is to prevent the concrete from sticking to the formwork, ensure that the concrete surface is smooth and clean, and facilitate the removal of the formwork.
(4) Concrete vibration and exhaust:
When pouring concrete, the method of layered pouring should be adopted, and a vibrator should be used to vibrate each layer evenly and fully until the concrete surface appears and there are no more bubbles discharged. Doing so can improve the compactness and uniformity of the concrete, reducing the occurrence of internal defects and cracks.
Following the above prevention and control measures can significantly improve the quality of concrete construction and enhance the durability and safety of concrete structures. In actual operation, the construction personnel should operate in strict accordance with the specifications to ensure the construction quality of each link.
4. Concrete hemp surface repair treatment method:
When working with concrete surfaces, we may encounter the so-called "hemp surface" phenomenon, where numerous small pits appear on the surface. In response to this phenomenon, the following professional remediation recommendations are provided:
If the concrete surface is originally planned to be painted, these tiny textured surfaces usually do not have much of an impact on the final result, so you can choose not to apply special treatment.
However, if the concrete surface is not intended to be painted, then these matte surfaces will need to be repaired.
The problem of hemp surface of concrete structure can be divided into plane (ground) or façade upside (wall, beam and column, etc.).
We all know that plane repair, it is more convenient, because in the selection of repair materials, you can choose materials with fluidity, materials will automatically flow and level, such as hemp potholes and other situations can be easily dealt with, at present, concrete plane (floor, roof, road, etc.) is more used in a new type of repair material is - cement pavement rapid repair material!
This repair material is also known as the pavement rapid repair mortar, of course, there are more names, after all, there are many differences between various projects or the north and south regions, but the main characteristics must have been heard of, such as 2 hours after construction can be quickly opened to traffic, this repair material is fast drying and fast setting.
Another is that it is high strength and compression, the final strength can reach C60 MPa, and the adhesion is good, after the repair will not fall off and crack twice, this should be the most worrying problem, many friends who have just begun to understand this product will be worried, this material is made of such a thin layer, will there be two layers of skin? The answer is no, because this is made of special materials, the material bonding performance is good, and the pry can not be pry open after the construction is dry.
In addition to the above, this kind of cement pavement rapid repair material also has a more convenient highlight, it is self-flowing, can be automatically leveled, especially some uneven ground is very helpful, of course, this material has many advantages and characteristics, here will not be said one by one, specific details can also see this content: cement pavement high-strength repair material: old ground, rotten ground renovation and repair!
So if you encounter the concrete façade on the back of the hemp surface of the situation should be solved? This kind of structure treatment does not need fluidity, for the repair material is mainly cohesive and strength, etc., more suitable for so two materials, one is high-strength polymer mortar, the other is epoxy resin mortar, the latter is relatively anti-corrosion and rust resistance and other properties are better, but the general slight damage is the first high-strength polymer mortar on the line.
To learn more about these two materials, you can read these two articles:
Content 1: High-strength polymer cement mortar, C60 compressive strength, good bonding, no falling off!
Content 2: Epoxy Mortar: Concrete Structure Reinforcement, Defect Repair, Bridge Repair!
During the repair process, the mortar should be evenly rubbed on the hemp surface using a professional tool and ensure that it adequately fills every small pit. Finally, use a trowel or scraper to smooth and calender the surface of the mortar so that the repaired concrete surface remains flat and smooth from the original surface.
Through such professional treatment, it can not only effectively repair the matte surface phenomenon of the concrete surface, but also ensure that the repaired surface has good durability and aesthetics.
02
Treatment and prevention method of concrete leakage
1. Exposed concrete reinforcement:
In construction engineering, reinforced concrete structures are one of the most common structural forms, which combine the strength of steel bars and the durability of concrete. However, during the actual construction process, there is sometimes a phenomenon known as "rebar bare". This refers to the fact that the main, secondary or stirrup, etc., in a reinforced concrete structure, is not completely encased in concrete, but is partially or completely exposed to the surface of the structure.
2. Analysis of the reasons for the exposure of steel bars in concrete construction:
In the concrete construction process, the exposure of steel bars is a common but also very critical problem. It can be caused by several professional factors:
(1) Displacement or absence of reinforcement cushion blocks
When pouring concrete, the role of the reinforcement cushion block is to ensure the correct position of the reinforcement and the thickness of the protective layer. If the pad is displaced or missed, the rebar will lose support and fall or move outward, making it cling to the formwork, eventually causing the rebar to be exposed.
(2) Imbalance and segregation of concrete mixture
The mix ratio of concrete is crucial for its working performance. If the ratio is not appropriate, segregation may occur during transportation or pouring, i.e., the aggregate is separated from the mortar. This can lead to a lack of sufficient mortar close to the formwork, or severe leakage of the formwork during vibrating, which in turn exposes the rebar.
(3) Insufficient thickness of the protective layer and improper vibration
The main function of the concrete protective layer is to protect the steel bars from corrosion. If the thickness of the protective layer is too small, or the vibrating rod directly touches and moves the steel bar during the vibrating process, or even the displacement of the steel bar caused by the construction personnel stepping on it, the protective layer will be damaged, resulting in the exposure of the steel bar.
(4) Insufficient wetting of the template and premature demoulding
The timber formwork should be sufficiently moistened before pouring concrete to prevent it from absorbing moisture from the concrete. If the wetting is insufficient, the formwork will absorb the slurry, resulting in a defect on the concrete surface during the removal of the formwork, which in turn will expose the rebar. In addition, premature demoulding can also damage corners due to insufficient concrete strength, which can also lead to exposed rebar.
(5) The aggregate particle size is too large and the vibration is insufficient
If the particle size of the aggregate used in the concrete is too large and the vibration is insufficient, the concrete may not be completely compacted around the steel bar, forming an overhead phenomenon. This results in a lack of adequate concrete coverage between the rebar and the formwork, which ultimately leads to exposed rebar.
After understanding these reasons, the construction personnel can take corresponding preventive measures, such as ensuring the correct placement of the cushion block, optimizing the concrete mix ratio, controlling the thickness of the protective layer, fully wetting the formwork, selecting the aggregate with the appropriate particle size, and fully vibrating, so as to effectively avoid the occurrence of the problem of exposed reinforcement.
3. Reinforcement protection and operation prevention measures in concrete construction:
During concrete construction, it is critical to ensure the correct position of the rebar, the thickness of the protective layer, and the uniformity of the concrete. Here are some professional prevention measures and operational points:
(1) Rebar positioning and protective layer control:
Before pouring concrete, it is important to ensure that the rebar is positioned accurately as required by the design and that its position is stable with appropriate bracing and fixing measures.
The control of the thickness of the protective layer is the key to preventing the corrosion of the rebar. Use cushion blocks or special tools to ensure that the correct distance between the rebar and the formwork is maintained, resulting in an even protective layer.
(2) Concrete fit and aggregate selection:
In areas with dense reinforcement, smaller particle size stones are selected as aggregates to ensure that the concrete can flow smoothly and fully fill the gaps between the reinforcements.
Strictly control the mix ratio of concrete to ensure that the ratio of water, aggregate and cement meets the design requirements to obtain good workability and working performance.
(3) Pouring method and anti-segregation measures:
When the pouring height exceeds 2 meters, the concrete should be cut by means of string drums, chutes or pumping, so as to reduce the free fall height of the concrete and prevent the occurrence of segregation.
During the pouring process, the flow speed of the concrete should be controlled to avoid impact or displacement of the reinforcement.
(4) Template processing and vibrating operation:
Before pouring concrete, the formwork should be sufficiently wet to reduce the risk of moisture loss and shrinkage cracks in the concrete. At the same time, ensure that the gaps of the template are tightly sealed and plugged to prevent slurry leakage.
When vibrating concrete, direct impact on the rebar should be avoided to avoid causing displacement or deformation of the rebar. In areas with dense reinforcement, small vibrating rods or blade vibrators can be used for fine vibrating to ensure the compactness and uniformity of the concrete.
(5) Rebar protection and adjustment:
During the construction process, measures should be taken to avoid personnel stepping on the rebar, so as not to cause the rebar to bend or trip. If deformation or displacement of the steel bar is found, it should be adjusted and repaired in time.
Special attention should also be paid to the concrete cover during the vibrating process to ensure that it is dense and tightly bonded with the steel bar to provide effective protection.
(6) Mold removal and maintenance:
Knowing the right time to remove the mold is crucial. Premature removal of the formwork may result in insufficient strength of the concrete and damage to edges or surfaces, while late removal of the formwork may affect the construction schedule. Therefore, the appropriate demoulding time should be determined according to the concrete strength and curing conditions.
After demoulding, the concrete should be properly cured to keep it wet and promote the continued development of strength.
Following the above professional measures and operation points can ensure that the reinforcement in the concrete construction process is effectively protected, and at the same time ensure that the quality and performance of the concrete meet the design requirements.
4. Concrete exposed bar treatment technology treatment method:
Exposed concrete reinforcement is one of the common construction problems, and appropriate treatment measures must be taken to ensure the safety and durability of the structure. The following are recommended professional treatments for different levels of exposition:
(1) Surface baring treatment:
In the case of only a slight exposition on the surface, the first step should be to thoroughly clean the exposed part to remove impurities and dirt from the surface.
Next, a 1:2 or 1:2.5 cement mortar is used to wipe the exposed ribs to ensure that the surface is flat and tightly bonded to the surrounding concrete.
Finally, the repaired part is adequately cured to ensure that the cement mortar can harden properly and reach the expected strength.
(2) Deep rib treatment:
If the bars are exposed, the surrounding weak concrete and protruding aggregate particles should be removed first to ensure that the repair material can be well bonded to the base surface.
Once the cleaning is complete, use a high-pressure water gun or brush to rinse the exposed area thoroughly to remove any loose particles and dust.
There are two kinds of materials that can be selected, if the exposed steel bar is very serious, you can choose high-strength non-shrinkage grout, this material has fluidity, needs to be poured to the damaged position, the strength can reach 60MPA, the specific details can be seen in this content to understand: high-strength non-shrinkage grout, high strength, no shrinkage, micro-expansion, self-compacting, no need to shake!
The other is a kind of high-strength repair mortar, which is epoxy resin mortar, and the two-component is called epoxy emulsion mortar and epoxy mortar.
The above treatment methods are for reference only, and should be flexibly adjusted according to the specific situation during actual construction. At the same time, in order to ensure the effectiveness of the treatment, it is recommended that the operation be carried out by experienced professionals.
03
Treatment and control methods of concrete honeycomb
1. Analysis of concrete honeycomb phenomenon:
In concrete structures, a defect known as "honeycomb" sometimes appears. Honeycomb refers to the situation that the concrete is loose in the local area, the aggregate is concentrated and there is no mortar, resulting in the formation of honeycomb-like holes between the aggregates.
2. Analysis of the causes of concrete honeycomb defects:
As the main material in the construction field, the quality of concrete is directly related to the stability and durability of the structure. However, in the actual construction process, honeycomb defects may occur in the concrete. Here's an in-depth look at the causes of these cellular defects:
(1) Concrete mix problem:
When the ratio of sand, gravel, cement, and water is not appropriate, it can lead to an uneven composition of concrete. Especially when the amount of mortar is insufficient and there are too many stones, the working performance and strength of concrete will be affected.
(2) Insufficient stirring:
If the mixing time of the concrete does not meet the requirements, the components will not be homogeneously mixed. This not only affects the workability of the concrete (i.e. fluidity and plasticity), but also makes it difficult to achieve a compacting effect when vibrating.
(3) Improper blanking method:
If the concrete falls directly from too high place without setting up a string drum or chute, the stone is easy to fall down due to its large weight, resulting in the separation of the stone and the mortar, that is, segregation.
(4) Vibration is not compact:
In the process of concrete pouring, if the material is not layered or the vibration time is insufficient, and the vibration point is missing, it will lead to the existence of cavities and non-compactness in the concrete, thereby affecting its overall strength.
(5) Improper treatment of formwork gaps:
If the gaps of the formwork are not tightly sealed and plugged, the cement slurry will be lost from these gaps during the concrete pouring and vibration process, resulting in honeycomb, hemp surface and other defects on the concrete surface.
(6) Problems in rebar dense areas:
In areas with dense reinforcement, if the particle size of the stones used is too large or the slump of the concrete is too small (i.e. poor fluidity), it will be difficult for the concrete to fully fill the gaps between the reinforcements, forming cavities or imcompactness.
(7) Pouring discontinuity:
When pouring foundations, columns, walls and other components, if the upper layer of concrete is poured without a slight pause at the root, due to the settlement and water leakage of cement slurry, it may lead to a weak layer or cavity in the root concrete.
After understanding these professional reasons, construction personnel can take more targeted measures to prevent the occurrence of concrete honeycomb defects, so as to ensure the safety and durability of the structure.
3. Honeycomb prevention and control measures for concrete construction:
In the process of concrete construction, in order to ensure the safety and durability of the structure, a series of professional honeycomb control measures must be taken. Here's a breakdown of a few key links:
(1) Precise control of concrete mix ratio:
In the design stage, the mix ratio of concrete is accurately calculated according to engineering requirements and material characteristics. This step is crucial and determines the strength, durability and workability of the concrete.
In the mixing process, the measurement of various raw materials is strictly controlled to ensure that the concrete is mixed evenly and the slump meets the construction requirements. This helps to improve the compactness and uniformity of the concrete and reduce the occurrence of internal defects.
(2) Reasonable setting of concrete cutting facilities:
When the concrete cutting height exceeds 2 meters, a string drum or chute should be set. These facilities can effectively slow down the free-fall rate of concrete, preventing concrete segregation and water leakage.
Through the blanking method of string drum or chute, it can also avoid the concrete directly impacting the formwork or steel reinforcement skeleton, and reduce its lateral pressure and vibration impact on the formwork.
(3) Layered watering and vibrating:
When pouring concrete, the method of layered blanking and layered vibration should be adopted. The thickness of each layer of concrete should be determined according to the type and performance of the vibrator to ensure that the concrete can be fully vibrated and compacted.
Layered pouring and vibrating help to remove air and moisture from the inside of the concrete, improving the compactness and uniformity of the concrete. At the same time, it can also effectively prevent the occurrence of leakage vibration and overvibration.
(4) Strict treatment of formwork gaps:
Before the formwork is installed, the flatness and gaps of the formwork should be carefully checked. For places with large gaps, putty or special sealant should be used for plugging treatment.
During the watering process, the support of the formwork and the changes in the gaps should be checked at any time. If problems such as slurry leakage or template deformation are found, measures should be taken to deal with them in time. This helps to ensure the appearance quality and dimensional accuracy of the concrete.
(5) Special treatment of foundations, columns and wall roots:
When pouring foundations, columns, and wall roots, special measures are required to treat these parts because they are susceptible to settlement and shrinkage.
Generally speaking, after the lower concrete is poured, it should be intermittently 1~1.5 hours (the specific time depends on the concrete performance and construction conditions), and the upper concrete should be poured after the concrete is initially compacted. This can effectively avoid the occurrence of the phenomenon of "rotten neck" and improve the integrity and stability of concrete.
By following the above professional prevention and control measures, the quality and safety of concrete construction can be effectively guaranteed. At the same time, these measures can also improve construction efficiency, reduce costs, and provide strong support for the smooth progress of the project.
4. Concrete honeycomb repair technology treatment method:
Concrete honeycomb is a common defect in the surface of concrete structures, and appropriate repair measures must be taken to ensure the safety and durability of the structure. Here are the professional patching methods for different levels of cellularity:
(1) For small cell patching:
Cleaning and rinsing: First, use clean water to thoroughly rinse the honeycomb area to remove floating ash and impurities on the surface.
Mortar repair: 1:2 cement mortar is used for filling. When repairing, it should be ensured that the mortar is fully filled into the honeycomb and tightly integrated with the surrounding concrete. (If the mortar you mix is not convenient, you can also choose the epoxy resin mortar and high-strength polymer mortar mentioned above)
Curing and grinding: After the repair is completed, the repaired part is fully cured to ensure that the mortar can be hardened normally. After the mortar reaches a certain strength, an angle grinder is used to polish it to make the repaired part smooth and consistent with the surrounding concrete surface. For more demanding occasions, sandpaper can also be used for fine sanding.
(2) For the patching of large cells:
Rejection and chiseling: First, the loose stones and protruding particles in the honeycomb part are removed, trimmed into a flare shape, and chiseled to increase the adhesion between the repair material and the substrate.
Base surface treatment: Use a wire brush with high-pressure water to clean the chiseled base surface to remove all loose particles and dust, ensure that the base surface is clean, solid, rough and wet, and create good conditions for subsequent repairs.
Mortar filling and curing: the formwork is erected, and then the high-strength non-shrinkage grout material with a higher strength grade than the original concrete is used to fill it to ensure that the repair material is dense and free of cavities. After the repair is completed, the repaired area is adequately cured to ensure that the repair material can harden properly and achieve the expected strength.
Please note that the above repair methods are for reference only, and should be flexibly adjusted according to the specific situation during actual construction. At the same time, to ensure the repair effect, it is recommended to be operated by experienced professionals.
04
Treatment and prevention methods of concrete holes
1. Common problems of holes in concrete structures:
In construction work, reinforced concrete structures sometimes have quality problems such as holes and honeycombs, which not only affect the appearance of the structure, but also may threaten its safety and durability.
Holes, usually large voids in concrete, can be caused by the concrete not fully filling the formwork during the pouring process, or the vibration is not compact. These holes disrupt the continuity of the concrete, weaken the load-bearing capacity of the structure, and provide a passage for the ingress of moisture and harmful substances, thereby accelerating the corrosion of the rebar and the deterioration of the concrete.
2. Analysis of the causes of the formation of holes and cavities in the concrete:
As the main material of the building structure, the internal quality of concrete is directly related to the safety and durability of the building. During the concrete pouring process, the phenomenon of internal cavities sometimes occurs, which may affect the mechanical properties and service life of the concrete. Below, we analyze the causes of these holes from a professional perspective:
(1) Concrete pouring problems in reinforcing dense areas or embedded parts
In the parts with dense reinforcement or reserved holes and buried parts, due to the limited space, the concrete is easily hindered when pouring, resulting in poor blanking. If the upper concrete is poured without sufficient vibration at this time, the air and moisture in the lower concrete cannot be discharged, and a cavity will be formed.
(2) Insufficient segregation and vibration of concrete
Segregation may occur during the transportation and pouring of concrete, that is, the separation of the cement slurry from the aggregate. If the vibration is insufficient or not vibrated at this time, the cement slurry cannot fully fill the void between the aggregates, and a honeycomb-shaped cavity will be formed. In addition, if there are too many or too large stones in the concrete, it is also easy to cause vibration and form cavities.
(3) The thickness and height of concrete pouring are too large
In the process of concrete pouring, if the blanking is too much, too thick or the blanking height is too high, the vibration force of the vibrator may not be able to penetrate the entire concrete layer, resulting in the vibration of the lower concrete and the formation of a cavity. Therefore, the thickness and height of each layer should be controlled when pouring concrete to ensure that the vibrator can work effectively.
(4) Foreign matter inside the concrete
Before concrete pouring, if the formwork is not cleaned up, there are residual tools, wooden blocks, mud blocks and other debris, which will hinder the flow and vibration of concrete when pouring concrete, resulting in the formation of cavities around it. Therefore, before pouring concrete, you should carefully check whether the inside of the formwork is clean and remove debris in time.
To sum up, in order to avoid the generation of cavities inside the concrete, the thickness and height of each layer of concrete should be controlled during the pouring process, the full vibration should be ensured, the debris in the formwork should be removed in time, and special measures should be taken to ensure the quality of concrete pouring in the reinforcement dense area or embedded parts.
3. Hole prevention and control measures in concrete construction:
In construction engineering, the quality of concrete construction is directly related to the safety and durability of the building. Especially in the parts with dense steel bars or complex structures, it is necessary to take a series of professional technical measures to ensure the quality of construction. Let's take a closer look at these key technical measures.
(1) Use fine stone concrete with a higher grade and vibrate it sufficiently
In areas with dense reinforcement or complex structures, the pouring and vibrating of concrete are facing great challenges. In order to ensure the compactness and uniformity of the concrete, we usually choose fine stone concrete with a higher grade for pouring. This type of concrete has better flow and plasticity, and can be more easily filled into rebar gaps. At the same time, during the pouring process, we also need to use professional vibrating equipment to vibrate the concrete in layers to ensure that its internal bubbles are fully discharged, so as to achieve a higher degree of compactness.
(2) Double-sided simultaneous watering technology of reserved holes
In building structures, reserved holes are a common construction requirement. However, the existence of holes will bring certain difficulties to the pouring of concrete. In order to prevent problems such as vibration leakage or cavities during the pouring process, we usually use the technology of simultaneous pouring on both sides. That is, the material is cut on both sides of the hole at the same time, and the uniformity and continuity of the concrete are ensured. In addition, we will add gating openings on the side of the holes to better observe and control the pouring of concrete.
(3) Strictly control the quality of sand and gravel and the mixing of debris
Sand and gravel is one of the main raw materials of concrete, and its quality directly affects the performance and construction quality of concrete. Therefore, in the process of concrete construction, we need to strictly control the quality of sand and gravel to ensure that it meets the design requirements. At the same time, in order to prevent debris (such as soil blocks, formwork tools, etc.) from mixing into the concrete, we also need to set up a special cleaning area on the construction site to clean and screen the sand and gravel. In addition, before the concrete is poured, the formwork needs to be thoroughly cleaned to ensure that its surface is clean and free of debris.
Through the application of the above three key technical measures, we can effectively improve the quality and efficiency of concrete construction, and provide a strong guarantee for the safety and durability of construction projects.
4. Concrete structure hole treatment method:
(1) Hole pretreatment:
First of all, the hole is preliminarily treated to remove the loose and damaged parts of its edge to ensure that the edge of the hole is neat and clear.
Using professional tools, such as hammers and chisels, the inner wall of the hole is trimmed to form a regular shape, which helps with subsequent filling and repair work.
(2) Cleaning:
Use a wire brush to carefully clean the dirt, debris and other impurities inside the hole to ensure that the repaired surface is clean.
Wire brushes are effective in removing dirt that adheres to the concrete surface without damaging the concrete itself.
(3) Surface preparation:
Compressed air is used to purge the repaired surface to further remove dust and fine particles to ensure the cleanliness of the repaired surface.
Compressed air penetrates deep into the hole and blows out impurities that are difficult to clean with a brush.
(4) Wetting treatment:
Before filling the concrete, thoroughly moisten the repair surface and its surrounding area with water.
The wet concrete surface contributes to a good bond between the freshly poured concrete and the old concrete, improving the repair effect.
(5) Concrete filling and finishing:
Select a high-strength grade of high-strength non-shrinkage grout that matches the original concrete structure for filling.
After filling, the repaired surface is compacted and smoothed to make it flush and smooth with the surrounding concrete surface.
The situation of the hole can also be treated with epoxy resin mortar and high-strength polymer mortar, as mentioned above, both of these materials are a kind of repair mortar with good high-strength bonding.
Through the above steps, we can effectively repair concrete holes and restore their structural integrity and functional function.
05
Treatment and prevention methods for concrete cracks and interlayers
1. Analysis of concrete gaps and interlayers:
In concrete structures, a specific defect is sometimes observed: there are loose layers inside the concrete in a horizontal or vertical direction. This phenomenon is known as the internal loose layer of concrete, and it is a potential structural problem that requires adequate attention.
2. Causes of concrete gaps and interlayers:
In the concrete construction process, if not handled properly, it is easy to produce some common defects. The following is a professional analysis of the causes of these defects:
(1) Improper treatment of construction joints and deformation joints:
When construction joints or deformation joints are not properly treated, such as not removing the surface of the cement film, loose stones or weak concrete layers, and not allowing them to be sufficiently wet, the concrete is poured directly, which will lead to a poor bond between the old and new concrete, resulting in cracks or voids.
(2) Debris residue in the construction joint:
If there are debris such as sawdust, soil, bricks and other debris in the construction joints and are not completely removed, these debris will interfere with the normal setting and bonding of concrete, resulting in a reduction in local strength, which may cause cracks or leaks.
(3) The concrete pouring height is too large and there are no auxiliary measures:
In the process of concrete pouring, if the pouring height is too large and no auxiliary tools such as strings and chutes are set to slow down the falling speed of concrete, the concrete will be segregated in the process of free fall. Segregation will lead to the separation of concrete components, the sinking of coarse aggregates, and the floating of slurry, which will seriously affect the uniformity and strength of concrete.
(4) Improper handling of the junction of the ground floor:
At the junction of the bottom layer, if a mortar layer of joint is not laid first, or the concrete at the joint is not vibrated enough, this will cause the concrete at the junction to be not dense enough, thus forming a weakness. These weaknesses may develop into cracks or leakage channels during subsequent use.
To sum up, in order to avoid these common defects in concrete construction, it is necessary to operate in strict accordance with the construction specifications to ensure that every step of the treatment meets the professional requirements.
3. Prevention and control measures for concrete joint treatment:
In concrete construction, joint treatment is a crucial link. It is not only related to the integrity and durability of the concrete structure, but also directly affects the aesthetics of the building. Below, we will introduce a few key measures for concrete joint treatment from a professional point of view.
Measure 1: Strictly treat the surface of construction joints and deformation joints
Construction joints and deformation joints are common types of joints in concrete structures. When dealing with these seams, it must be done in strict accordance with the requirements of the specification. First of all, it is necessary to ensure that the seam surface is smooth and clean, and there is no floating slurry, loose objects, etc. For larger gaps, chiseling is also required to increase the cohesion between the old and new concrete.
Step 2: Thoroughly clean up the debris at the joints
Before the joint treatment, it is necessary to thoroughly clean the debris at the joint, such as sawdust, soil, bricks, etc. These debris will seriously affect the bonding effect of new and old concrete, and even lead to leakage, cracks and other problems at joints. Therefore, the clean-up must be meticulous and leave no dead ends.
Measure 3: Reasonably set up strings or chutes
When the concrete pouring height exceeds a certain range, in order to ensure that the concrete can flow evenly and smoothly into the joint, it is necessary to set up a string drum or chute. These devices can effectively reduce the segregation and water leakage of concrete, and improve the quality of concrete at joints.
Measure 4: Optimize the concrete mix ratio and vibration process at the joint
Before pouring concrete at the joint, it is recommended to pour a layer of stone-free mortar or halved stone concrete with the same mix ratio as the original concrete. The purpose of this is to increase the adhesion between the old and new concrete and improve the compactness of the joints. At the same time, it is necessary to strengthen the vibration during the pouring process to ensure that the concrete is fully compacted to avoid defects such as cavities and honeycombs.
Through the implementation of the above four professional measures, we can effectively improve the quality of concrete joint treatment and ensure the structural safety and service life of the building. At the same time, these measures can also improve the aesthetics of the building and add a beautiful landscape to the urban construction.
4. Treatment method of concrete gap interlayer:
Concrete gap interlayer is a common problem in concrete structures, and appropriate treatment methods are required to ensure its structural performance and service life. Here are two common treatments, one for different depths:
(1) Treatment of shallow gap interlayer
When the gap is shallow, the method of local repair can be used. First, use the appropriate tools to chisel away the loose concrete, making sure that the chisel depth is sufficient to expose the solid concrete base. Then, rinse the chiseled area thoroughly with clean water to remove all loose particles and impurities. Next, the cement mortar is formulated in a ratio of 1:2 or 1:2.5 and strongly filled into the gaps to ensure that the fill is dense and tightly integrated with the surrounding concrete. Epoxy resin mortar and high-strength polymer mortar can also be used for repair and reinforcement, and its strength can reach C60 MPa.
(2) Treatment of deep crevice interlayers
For deeper crevice interlayers, more thorough treatment measures are required. First, remove all loose concrete and internal inclusions to ensure that the inside of the gap is clean and free of impurities. The crevices are then rinsed with a pressure water gun to further remove residue and loose particles. Next, according to the shape and size of the gap, the appropriate template is erected for the subsequent high-strength non-shrinkage grout filling. Before perfusion, the surface of the gap can be closed to improve the perfusion effect. Finally, a high-strength, non-shrinkage grout is used for strong pouring to ensure that the gap is completely filled and tightly bonded to the surrounding concrete. If conditions permit, grouting can also be carried out after infusion to further improve the compactness and structural properties of the gaps.
It should be noted that when dealing with the concrete gap interlayer, the appropriate treatment method should be selected according to the actual situation, and the construction should be carried out in strict accordance with the operation steps. At the same time, in order to ensure the treatment effect, it is recommended to carry out the necessary maintenance and inspection work after the construction is completed.
06
The concrete is not strong enough,
Treatment and control methods with poor homogeneity
1. Analysis of the phenomenon that the compressive strength of concrete is not up to standard:
In construction engineering, concrete is the main structural material, and its compressive strength is an important index to evaluate its performance. However, sometimes the average compressive strength of the same batch of concrete test blocks is lower than the design required strength grade, which is a common quality problem that needs to be paid enough attention.
When the compressive strength of the concrete test block is lower than the design requirements, it may mean that the load-bearing capacity of the entire concrete structure is affected. This may lead to problems such as cracking, deformation, and even damage in severe cases.
2. Analysis of the causes of insufficient concrete strength:
As the core material of building structure, the quality of concrete is directly related to the durability and safety of the project. However, in the actual construction process, various quality defects may occur in concrete. Below, we will delve into the causes of these defects from a professional perspective.
(1) Raw material quality problems:
Cement: Expired or damp cement can cause its activity to decrease, which can affect the strength and setting time of the concrete.
Sand and stone aggregates: Poor gradation of sand and stone aggregates will increase the internal porosity of concrete, and too high mud content or too much debris will also affect the strength and durability of concrete.
Admixtures: Improperly used or inaccurately dosage admixtures can damage the internal structure of concrete, resulting in a decrease in its performance.
(2) Mix ratio and construction operation problems:
Improper mix ratio: The mix ratio of concrete should be designed according to engineering requirements and raw material performance, such as the proportion is out of balance, which will directly affect the strength and working performance of concrete.
Inaccurate measurement: During the construction process, the measurement of each raw material must be accurate, otherwise it will lead to the instability of concrete performance.
Add water at will: Increasing the amount of water used in construction will increase the water-cement ratio of concrete, thereby reducing its strength and durability.
(3) Mixing and feeding problems:
Reversal of the filling sequence: The correct filling sequence ensures that the concrete components are well mixed, otherwise it can lead to uneven concrete.
Insufficient mixing time: Insufficient mixing time will cause the concrete components to not be fully mixed, affecting its uniformity and strength.
(4) Winter construction problems:
Premature demoulding: During winter construction, the strength of concrete increases slowly, and premature demoulding may cause damage to the concrete structure.
Early freezing: When concrete freezes before it reaches sufficient strength, its internal structure is damaged, resulting in reduced strength and durability.
(5) Problems of test block production and maintenance:
The test block is not compacted: if the test block is not compacted during the vibration process, its strength will be lower than the actual concrete strength.
Poor maintenance management: the curing conditions of the concrete test block do not meet the requirements, such as improper temperature and humidity control, which will affect the development of its strength.
Early damage: If the test block is damaged or dehydrated by external force during curing under the same conditions, it will not accurately reflect the actual performance of the concrete.
To sum up, in order to avoid the quality defects of concrete, the quality of raw materials should be strictly controlled, the design of reasonable mix ratio, the accuracy of construction operation should be ensured, the special requirements of winter construction should be paid attention to, and the production and maintenance management of test blocks should be strengthened.
3. Prevention and control measures for insufficient concrete strength:
Concrete, as a basic material in the construction field, requires strict control of several key factors in its preparation process to ensure the quality and performance of the final product. The following will analyze the five core points of concrete preparation for you from a professional point of view.
Point 1: Quality control of cement
Cement is the main cementitious material of concrete, and its quality directly affects the strength and durability of concrete. Therefore, when choosing cement, it is necessary to ensure that it has a factory certificate of conformity and is fresh and non-caking. For expired cement, it must be re-tested and can only be used after it is qualified.
Point 2: Selection and matching of aggregates
Sand and gravel are the main aggregates of concrete, and their particle size, gradation and mud content have an important impact on the performance of concrete. Reasonable aggregate mix can improve the compactness and strength of concrete, and reduce shrinkage and cracks. Therefore, before preparing concrete, sand and gravel must be strictly screened and inspected.
Point 3: Accurate mix ratio design
The mix ratio of concrete refers to the proportion of each component such as cement, sand, gravel and water. A reasonable mix ensures that the concrete has the required strength, durability and workability. Therefore, before preparing concrete, it is necessary to carry out an accurate mix design, and adjust and optimize it according to the actual situation.
Point 4: Standardized mixing process
Mixing is a key link in the concrete preparation process, and its quality directly affects the uniformity and compactness of concrete. In order to ensure the quality of mixing, it is necessary to feed and stir in accordance with the specified order and time to ensure that the components are fully mixed and evenly mixed. At the same time, it is also necessary to control the mixing speed and mixing time to avoid excessive mixing leading to concrete segregation and water leakage.
Point 5: Special measures for winter construction
When constructed at low temperatures, concrete is susceptible to frost damage, resulting in reduced strength and durability. Therefore, during winter construction, special measures must be taken to ensure the quality of concrete. For example, when using ordinary cement to prepare concrete, it must be ensured that its strength reaches more than 30% of the design requirements before it can be frozen, and when using slag cement, the strength is required to reach more than 40%. In addition, it is necessary to strengthen the management and maintenance of concrete test blocks to ensure that they can truly reflect the actual performance of concrete.
In summary, concrete preparation is a complex and rigorous process that requires strict control of several key factors. Only under the guidance of professionals, in accordance with the requirements of the specification of operation and management, can high-quality concrete products be prepared.
4. Treatment method of insufficient concrete strength:
In civil engineering, the strength of concrete is crucial. But sometimes, the actual strength of concrete may be lower than the design requirements due to various reasons. In this case, engineers use specialized non-breakage testing methods, such as the rebound hammer method and the ultrasonic method, to accurately determine the actual strength of the structural concrete.
The working principle of these methods is based on physical principles: a rebound meter assesses the hardness of a concrete surface by measuring how well it rebounds against an impact, while the ultrasonic method uses the speed at which sound waves propagate through concrete to determine its compactness and strength.
If, after these tests, it is found that the concrete strength still does not meet the engineering requirements, then a more in-depth structural safety check is required. This process takes into account factors such as the actual strength of the concrete, the stress characteristics of the structure, and the environment in which it is used to evaluate the safety of the structure in its current state.
Finally, based on the results of the check, the engineers will work out a specific reinforcement or reinforcement plan. These options may include measures such as increasing reinforcement, using high-performance concrete repair materials, applying prestressing, etc., with the aim of improving the load-bearing capacity and durability of the structure and ensuring its safety during use.
If you encounter problems such as low rebound and insufficient strength of the new concrete structure, you can use concrete enhancer, which can be sprayed and rolled and brushed, which is very convenient to use, and can improve the overall concrete by more than 8-15%, and has obvious effects after spraying 3 days, and reaches the peak in 7 days.
07
Treatment and prevention methods for concrete missing edges and corners
1. Defects at the corners of concrete components:
In concrete structures, local concrete falls, irregular shapes, and defective edges and corners often occur at the right angles of beams, slabs, columns, walls and openings. Behind these common problems, there are some professional problems involved in the process of concrete construction and curing.
2. The causes of the phenomenon of missing edges and corners of concrete:
In the process of concrete construction, sometimes there is a phenomenon of missing edges and corners of the components, which not only affects the aesthetics of the components, but also may affect their structural performance. Below, we analyze the causes of this phenomenon from a professional perspective.
First of all, the wetness of the wood formwork before pouring concrete has an important impact on the quality of the concrete. If the wood formwork is not wet or not wet enough, the moisture at the edges and corners of the poured concrete will be absorbed by the formwork in large quantities during the curing process. This can lead to insufficient hydration of the concrete and a decrease in strength, which makes it easy for the edges and corners to stick off when the mold is removed.
Secondly, the formwork removal time during the construction process is also a key factor. In the normal temperature construction, if the side non-load-bearing formwork is removed prematurely, the concrete has not yet reached enough strength to support its own weight and external load, which may lead to the deformation or damage of the component under the action of self-weight or external force, and then the phenomenon of missing edges and corners appears.
Finally, improper operation or poor protection in the process of mold removal is also an important cause of missing edges and corners. When removing the mold, if it is hit by an external force or hit by a heavy object, or if the component is not properly protected during the mold removal process, it may lead to damage to the edges and corners of the component.
To sum up, in order to avoid the phenomenon of missing edges and corners of concrete components, we should pay attention to controlling the wetness of the wood formwork during the construction process, reasonably determine the formwork removal time, and strengthen the protection of the components in the process of removing the formwork. At the same time, construction quality management should also be strengthened, the operation skills and sense of responsibility of construction personnel should be improved, and the construction quality and use performance of concrete components should be ensured.
3. Prevention and control measures for concrete edge and corner loss:
Protecting edges and corners is a crucial task during concrete construction. In order to ensure the integrity and aesthetics of the concrete structure, we need to take a series of professional measures to take care of these fragile edges and corners. Below, let's take a look at these five professional measures!
Measure 1: Wetting and maintenance of wood formwork
Before pouring concrete, the wood formwork must be fully wetted. This can effectively prevent the formwork from absorbing the moisture in the concrete during the pouring process, resulting in dry cracking at the edges and corners. At the same time, after the concrete is poured, it is also necessary to carefully water and cure to ensure that the concrete maintains the appropriate humidity during the hardening process, so as to enhance the strength and durability of the edges and corners.
Measure 2: Control the concrete strength during demoulding
When removing the side non-load-bearing formwork, the strength of the concrete must reach more than 1.2MPa. This is because demoulding is carried out under the condition of low concrete strength, which can easily lead to breakage and chipping at the edges and corners. This can be effectively avoided by controlling the concrete strength during demoulding.
Measure 3: Edges and corners protection in the process of demoulding
During the demoulding process, special attention needs to be paid to protecting the edges and corners of the concrete. When removing the mold, it should be avoided to use too much force and too quickly, so as not to cause unnecessary damage to the edges and corners. At the same time, professional demoulding tools and techniques can also be used to ensure that the demoulding process is more accurate and smooth.
Measure 4: anti-impact measures when lifting the formwork
When lifting the formwork, effective anti-impact measures should be taken to prevent the formwork from colliding with the poured concrete. This can be achieved by setting up anti-collision buffer devices, adjusting the lifting route, etc. In this way, the impact damage of the formwork on the edges and corners of the concrete can be effectively avoided.
Measure 5: Transportation protection of the positive angle of the finished product
When transporting finished sunny corners, they should be properly protected with materials such as straw bags. The straw bag has a good cushioning and shock absorption effect, which can effectively reduce the vibration and impact on the sunny angle during transportation. At the same time, reasonable selection and loading arrangements should also be made for transport vehicles to ensure that the positive angle remains stable and safe during transportation.
Through the implementation of the above five professional measures, we can effectively protect the edges and corners of concrete, ensure construction quality and structural safety. These measures not only reflect the professionalism and rigor of concrete construction, but also provide a reliable guarantee for our construction projects.
4. Treatment method for concrete missing edges and corners:
In concrete structures, there are sometimes missing edges and corners, and appropriate restoration measures are required to restore their integrity and functionality. Here's how to fix it in two different situations.
(1) For smaller edges and corners:
When the missing edges and corners of the concrete are small, the method of local repair can be adopted. First, use a wire brush to remove loose particles and impurities from the missing corners to ensure a clean surface. Then, rinse with clean water and moisten the missing part well. Next, an epoxy resin mortar or high-strength polymer mortar is configured, filled in the missing corners, compacted and troweled with a trowel to ensure it is flush with the surrounding concrete surface. Finally, proper curing is carried out so that the repaired part forms a good bond with the surrounding concrete.
(2) For larger notchs:
When the lack of concrete is large, more thorough repair measures are required. First of all, the unreal concrete and protruding aggregate particles are chiseled to ensure that the chiseled area is flat. Then, rinse the chiseled area with clean water to remove residue and impurities, and moisten it well. Next, the formwork is erected to fix the shape and size of the repaired area. The high-strength non-shrinkage grout is used for filling, which has good fluidity and self-compacting, and can fill fine voids and tightly bind with the original concrete. During the pouring process, it is necessary to ensure that the concrete fills the formwork adequately and is flush with the surrounding concrete. Finally, curing is carried out to allow the newly poured concrete to harden sufficiently and develop a strength and durability similar to that of the original concrete.
It should be noted that when repairing concrete missing edges and corners, appropriate repair methods and materials should be selected according to the actual situation, and construction should be carried out in strict accordance with the operation steps. At the same time, in order to ensure the restoration effect, it is recommended to carry out the necessary inspection and evaluation work after the completion of construction.
08
Treatment and prevention methods for concrete expansion mold and film bursting
1. Common phenomenon of concrete expansion mold and film bursting:
In the process of concrete pouring and vibrating, the formwork will occasionally bulge, deviate, burst, and even collapse. These phenomena are not accidental, but involve some core problems in concrete construction.
2. Analysis of the causes of concrete expansion mold and film burst defects:
In the construction of concrete structures, formwork support and pouring process are two crucial links. However, when there is a problem in these links, it often leads to various defects in the concrete. Below, we will analyze two common defect causes from a professional perspective.
First of all, the lateral support stiffness of the formwork is insufficient, the formwork is too thin or the clamping support is not firm, which may lead to deformation or displacement after concrete pouring. As a forming tool for concrete, the stability and bearing capacity of the formwork directly affect the accuracy and safety of the concrete structure. Therefore, when selecting formwork materials and designing support systems, its stiffness and stability must be fully considered to ensure that it can withstand the pressure and self-weight of concrete during the pouring process.
Secondly, when pumping concrete with large fluidity, if the one-time pouring is too high and too fast, it will cause excessive stress and deformation inside the concrete, which will lead to cracks, deformation and other defects. Although high-flow concrete has the advantage of being easy to pump and pour, it also requires strict control of pouring speed and height during the pouring process to avoid adverse effects on the concrete structure.
3. Prevention and control measures for concrete expansion mold and film bursting:
In concrete construction, the stability of the formwork as a temporary support and forming tool is crucial. Here are some professional strategies to optimize the stability of your template and prevent potential problems:
(1) Refinement of template calculation
In addition to the standard formula, there are also uncertainties such as the slump, temperature, pouring speed and vibrating method of the concrete.
These factors will affect the stress condition and stability of the formwork, so they need to be fully considered in the calculation to ensure the safety and reliability of the formwork.
(2) Bolt safety enhancement
Bolts play a key role in the connection and fixation of the formwork system. To prevent bolt breakage caused by nut detachment, double nut reinforcement measures can be taken or bolts with anti-falling pins can be selected.
By enhancing the stability of the bolt, the partial failure and overall collapse of the formwork system can be effectively avoided.
(3) The scientificity of the tie rod setting
Considering the characteristics of the inverted triangle distribution of the concrete side pressure, the tie rod should be set in accordance with the principle of dense bottom and sparse top.
Such a layout can more effectively resist side pressure and alleviate the stability problems caused by the insufficient number of tie rods of the formwork.
(4) Stability check of formwork support
The stability of the formwork support is the key to ensure the safety of the entire formwork system. The stability of the stressed members and longitudinal supports should be checked to ensure that they can withstand various loads during the construction process.
(5) Standardization of pouring concrete
When pouring concrete, it is required to cut evenly and symmetrically, and strictly control the pouring height, especially on both sides of the door and window opening template.
At the same time, it is necessary to ensure that the concrete is vibrated and compact, but it cannot be excessively vibrated so as not to cause deformation or damage to the formwork. This requires a lot of experience and skills on the part of the operator.
(6) Maintenance and use of formwork materials
For wood formwork and plywood formwork, concrete should be poured in time after acceptance, so as to avoid deformation caused by long-term exposure to the sun or rain.
Reused wood formwork must be rigorously inspected and repaired before each use to ensure that it meets the requirements for use.
(7) Precise control of concrete vibration
The operator should accurately control the insertion depth of the concrete vibration to avoid the damage of the formwork or the explosion of the mold caused by too deep insertion.
The vibrating rod shall not be inserted into the vibrating rod again to vibrate the part that has been vibrated to ensure the compactness of the concrete and the safety of the formwork.
By following the above professional strategies, the stability of the formwork in concrete construction can be effectively improved, potential problems can be prevented, and construction quality and safety can be ensured.
4. Concrete expansion mold, burst film repair and emergency treatment methods:
In concrete construction, there are occasional deviations or unexpected situations. At this time, we need to take professional treatment methods to ensure the quality and safety of the project. Below, I will introduce you to two common ways to deal with it.
(1) Partial repair treatment
When there is a deviation in the concrete surface, such as a bulge or depression, we can take the following steps to repair it:
The deviation is chiseled to remove excess concrete and ensure a flat surface. During the chiseling process, special care should be taken not to cut the steel bars at will. If it is really necessary to cut off, it must be reported to the engineering department, the technical department and the quality assurance department in advance, and the operation will be carried out after studying and formulating the treatment plan.
Rinse the chiseled area with clean water to remove impurities and dust, and make sure it is fully moistened.
Repair is carried out with cement mortar with the same mix as the original concrete. The mortar is filled in the deviations, compacted and smoothed to ensure that it is flush with the surrounding concrete surface. High-strength polymer mortar or epoxy resin mortar can also be used for repairs.
The repaired parts are cured to ensure that the newly poured concrete can be fully hardened and form a good bond with the original concrete.
(2) Emergency treatment of mold expansion and explosion mold
In the process of concrete pouring, sometimes there are unexpected situations such as mold expansion and mold explosion. At this point, we need to take the following measures immediately:
Stop pouring work at this site to ensure site safety.
According to the actual situation, quickly carry out emergency repair and reinforcement. This may include measures such as re-supporting the formwork, reinforcing the supports, etc., to ensure the stability and safety of the formwork.
If the situation is serious, it is necessary to reformulate the formwork support scheme according to the scheme design requirements, and continue pouring only after passing the acceptance of the relevant departments.
Through the above two treatment methods, we can effectively solve the common problems in concrete construction and ensure the quality and safety of the project. In practice, we should strictly follow the operating procedures, pay attention to details, and ensure that every step is in place.
In short, the treatment of concrete pouring defects is a meticulous and important work. In the actual operation process, the appropriate treatment method should be selected according to the type and severity of the defect, and the operation should be carried out in accordance with the relevant norms and standards. At the same time, strengthening the implementation of preventive measures can effectively reduce the probability of concrete pouring defects and improve the quality of the project.
If you have also encountered a variety of concrete structure damage, whether you are damaged on the ground, back, façade, etc., you can find suitable repair and reinforcement materials, such as ground sand, dust, exposed stones, potholes and other problems with high-strength cement pavement quickly repair materials!
Defects and damage of wall beams and columns such as backheads and elevations can be repaired and strengthened by using epoxy resin mortar, high-strength polymer mortar, high-strength grout and other materials.
Concrete reinforcing agent can be used for the problem of insufficient strength, which can quickly improve the rebound strength of concrete, the effect is obvious in 3 days, and the peak can be reached in 7 days, which can be increased by 8-15%, so that you can quickly pass the acceptance!
For crack problems, epoxy resin grout glue can be used to repair cracks in various concrete structures
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