In modern water conservancy construction, concrete as an important construction material, cracks in concrete are a common problem in water conservancy projects. In order to improve the quality of the project, we must fundamentally analyze the causes of concrete cracks, specific analysis of specific problems, so as to find out the root cause of the problem, so as to reduce the problem of concrete cracks in water conservancy construction.
The significance of solving concrete cracks in water conservancy construction
In water conservancy construction, concrete cracks on the impact of water conservancy projects is very big, to improve the quality of water conservancy projects, the solution to the problem of concrete cracks is necessary to pay attention to.
In modern society, the use of concrete in all aspects of life are involved, it is related to the national livelihood issues, concrete cracking problems can cause a lot of harm to people’s lives. Take the things in life, buildings, overpasses, shopping malls and other places, concrete is present, once the cracks appear, will seriously threaten the safety of people’s lives and property.
Therefore, solving the problem of concrete cracks in water conservancy projects can not only improve the quality of the project, but also protect people’s lives and property safety. The state and the government also give sufficient attention to water conservancy projects, so the study and solution of concrete cracks is of great social value.
The causes of concrete cracks in water conservancy construction
In water conservancy construction, cracks in concrete are a common problem. Through the study found that there are many causes of concrete cracks, the concrete itself condensation process, the influence of temperature differences, the influence of terrain, the impact of human factors, the impact of construction equipment are the main factors that cause concrete cracks.
2.1 The effect of poor shrinkage in the concrete setting process
The formation of concrete has a lot to do with the setting of cement. The degree of uniformity in the setting process of cement has a great impact on the quality of concrete. If the cement produces uneven volume changes during the setting process, it will cause a bad reflection inside the concrete and the appearance of expansion cracks.
The cracks appear mainly because of the low temperature of the concrete after curing, thus causing the concrete to shrink again and prompting the cracks to appear. At the same time, concrete is affected by external forces during the shrinkage process, which will also cause a bad reflection of its shrinkage and is also the main factor causing concrete cracks.
2.2 The influence of temperature difference
In water conservancy construction, temperature is an important influencing factor. The influence of temperature difference on the water conservancy project is continuous. In the process of concrete setting, temperature difference affects the shrinkage of concrete all the time, and different temperatures will cause different results, so it is very important to control the temperature difference in the construction.
In the construction, for the cooling measures invested less, it will lead to the concrete in the shrinkage process, due to the higher external temperature, resulting in the internal water evaporation rate is faster, so it is easy to make the concrete in the internal bad changes, the emergence of cracks is inevitable.
2.3 The influence of terrain
In the water conservancy construction, will face a variety of complex terrain, which has a great impact on the construction. Before the construction, will be a comprehensive survey of the construction site, according to the terrain to develop a reasonable construction plan.
But in actual life, many construction units for the construction site terrain survey are not comprehensive, which leads to a lack of knowledge of the construction terrain, in the pursuit of construction progress, according to experience in the construction, so that some special terrain will make the concrete structure becomes unsound, and naturally cracks will appear.
2.4 The influence of human factors
In modern society, water conservancy projects have become a tool for some people to pursue economic interests. In the construction process, in order to obtain greater economic benefits and reduce costs, the use of poor quality raw materials is an important means for them to make profits, which makes the materials fail to meet the construction requirements.
Take concrete, the use of poor quality materials will make the concrete in the process of setting, due to substandard quality, cracks appear.
2.5 construction equipment backward influence
In the process of water conservancy construction, construction equipment is very important, the good or bad equipment directly affects the quality of water conservancy projects. In many water conservancy construction, due to the backwardness of the equipment, materials and equipment can not match each other, which will cause the impact to a large extent. In the concrete, the backwardness of the equipment, not only affects the efficiency of construction, but also the factors that lead to the impact of concrete cracks.
Measures to prevent and control concrete cracks in water conservancy construction
In water conservancy construction, due to the importance of the concrete crack problem, the impact on the quality of the project is also crucial, so to improve the quality of the project, it is imperative to solve the problem of concrete cracks.
For the different causes of the formation of concrete cracks, according to the actual situation, to develop reasonable prevention and control measures to reduce the occurrence of concrete cracks phenomenon. The following are the prevention and control measures developed for different cases of concrete cracking problems.
3.1 Adjust the temperature difference and reduce the temperature
In the process of concrete condensation, the influence of temperature difference is very obvious. The temperature is too high will make the concrete in the condensation of the temperature, the internal moisture is evaporated, resulting in cracks.
Therefore, it is very important to control the temperature difference, adjust the temperature difference and reduce the temperature, so that the concrete will be more uniform in the process of setting. Especially in the summer construction, must pay attention to the regulation of temperature difference, must ensure that the concrete can not be placed under the sun for a long time, the construction workers can be cooling measures for concrete.
Pouring water on its surface can reduce the surface temperature, or it can be covered with tools. Taking such measures can make the concrete in the process of setting to enhance the crack resistance and reduce the appearance of concrete cracks.
3.2 Improve construction quality and reasonable construction
In the construction process, in many cases, concrete cracks are caused by the construction personnel not following the requirements of reasonable construction. Take the survey of the terrain, many construction workers are not comprehensive in the survey of the terrain, which results in the lack of understanding of the terrain, concrete in the construction process is easy to appear the phenomenon of structural insecurity and cracks. Therefore, reasonable construction is very important, and only by conducting a comprehensive survey of the terrain before construction and formulating a reasonable construction plan can we reduce concrete cracks and ensure construction quality.
3.3 Strengthen supervision and legal construction
Since in modern society, there are many phenomena of using water conservancy projects for private gain, the relevant departments should strengthen the supervision of water conservancy construction to reduce the phenomenon of using power for private gain.
As we all know, in the construction process, the quality of raw materials is an important factor affecting the quality of construction, substandard quality of raw materials is a common cause of engineering problems. Therefore, strengthening supervision can reduce the appearance of such phenomena, which not only reduces the problems in construction, but also improves the quality of the project.
3.4 Improve the quality of construction equipment
In water conservancy construction, construction equipment is vital, it is related to the quality of construction. In modern water conservancy construction, with the development of social and economic development, construction equipment is constantly updated, more and more advanced equipment is invented and used, so that not only the efficiency of construction is enhanced, but also to a large extent to improve the quality of construction.
Therefore, the construction party should update the equipment in time, so that it can effectively reduce the appearance of the phenomenon of concrete cracks. On the other hand, before construction, the inspection of equipment should be done to reduce equipment problems and ensure the normal and orderly implementation of construction.
In water conservancy construction, due to the importance of the concrete crack problem, it is decided that the prevention and control of it is crucial. Only by strengthening the attention to the concrete crack problem during the construction process and taking reasonable measures to prevent and control it can we reduce the occurrence of concrete crack phenomenon.
At present, people have made a lot of research to solve the problem of concrete cracks, from the concrete itself condensation, terrain factors, as well as construction equipment and other aspects of the construction of water conservancy projects to rectify, although it does not make the concrete crack problem is completely solved, but to a large extent to reduce the occurrence of concrete cracks phenomenon, for the quality of water conservancy projects has been greatly improved.
I believe that in the future development of society, people will be more and more effective in improving the problem of concrete cracks, and the quality of water conservancy projects will be better and better.