There are many forms and types of cracks, and there are design reasons, but more are caused by the combination of various factors in the construction process. To fundamentally solve the problem of cracks in concrete, it is necessary to start from the causes of concrete cracks. Correctly judging and analyzing the causes of concrete cracks is the most effective way to effectively control and reduce the occurrence of concrete cracks. The cause of cracks is a comprehensive problem that affects each other in design, construction, materials, environment and management, and comprehensive methods should be adopted to solve crack control problems. The control chain composed of six main factors is shown in the figure
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