混凝土结构工程的裂缝，是一个带着有普通性被工程界很为关注的问题。有些裂

The cracks in concrete structure engineering are a problem that has been very common in engineering circles. The continued expansion of some cracks may endanger the safety of the structure, because the final damage of the structure often starts from the cracks and becomes a precursor to the damage of the structure. This mainly refers to the cracks caused by the load; the appearance of some cracks causes engineering leakage and affects normal use. , It is the corrosion of steel bar, the peeling of the protective layer, which reduces the strength of concrete, seriously damages the durability of the project, and shortens the service life of the project. This mainly refers to the cracks caused by deformation; there are also cracks under the coupling action and cracks caused by the expansion stress of alkali aggregate reaction. And cracks caused by freezing and thawing. At the same time, large structural cracks are also unacceptable for people's observations, causing fear and psychological pressure, affecting the beauty of the building, and causing difficulties for decoration. Due to the complexity and dynamic variability of the micro and macro mechanisms that produce cracks, it is also a technical problem that plagues engineers and technicians.

The crack of concrete structure engineering is a common problem concerned by the engineering community. The continuous expansion of some cracks may endanger the safety of the structure, because the final failure of the structure often starts from the cracks and becomes the precursor of the failure of the structure, which mainly refers to the cracks caused by the load; Some cracks cause project leakage and affect normal use. They are reinforcement corrosion, peeling off of protective layer, reducing concrete strength, seriously damaging project durability and shortening project service life. This mainly refers to cracks caused by deformation; There are also cracks under coupling action, cracks caused by alkali aggregate reaction expansion stress and cracks caused by freeze-thaw. At the same time, large structural cracks are also difficult to accept, resulting in psychological pressure of fear, affecting the beauty of the building and making it difficult for decoration. Due to the complexity and dynamic change of the micro and macro mechanism of cracks, it is also a technical problem perplexing engineers and technicians.<br>

Cracks in concrete structure engineering are a common problem that has attracted great attention from engineering circles. The continued expansion of some cracks may endanger the safety of the structure, because the ultimate failure of the structure often starts from cracks and becomes the precursor of structural failure, which mainly refers to cracks caused by loads; Some cracks cause engineering leakage and affect normal use, such as corrosion of steel bars, peeling of protective layer, reduction of concrete strength, serious damage to engineering durability and shortening of engineering service life, which mainly refers to cracks caused by deformation. There are also cracks under coupling action, cracks caused by expansion stress of alkali aggregate reaction and cracks caused by freezing and thawing. At the same time, the large structural cracks are also unacceptable to people, causing psychological pressure of fear, affecting the beauty of buildings and causing difficulties for decoration. Because of the complexity and dynamic variability of micro and macro mechanism of cracks, it is also a technical problem that puzzles engineers and technicians.