混凝土是一种非均质脆性材料， 在温度和湿度变化的条件下， 硬化并产生体

Concrete is a brittle material heterogeneous, under conditions of temperature and humidity changes, producing hardening and <br>volume deformation, resulting in micro-cracks occur in the concrete. <br>The causes of cracking may be improper selection of raw materials and mixing ratio, wrong construction methods and <br>measures, influence of the conditions of the building, and unreasonable structure. The most effective measure also <br>is the reasonable control of the concrete mix and the construction process.

Concrete is a heterogeneous brittle material, which hardens and produces under the conditions of temperature and humidity changes<br>The volume deformation causes micro cracks in the concrete.<br>The causes of cracking may be the improper selection of raw materials and mix proportion, construction methods and<br>Incorrect measures, influence of building conditions and unreasonable structure, etc. At present, the most effective measures are still<br>It is a reasonable control in the concrete mixing and construction process.

Concrete is a kind of heterogeneous brittle material, which hardens and produces when the temperature and humidity change. Volume deformation causes micro-cracks in concrete. The causes of cracking may be improper selection of raw materials and mixture ratio, construction methods and Wrong measures, influence of building conditions and unreasonable structure, etc. The most effective measures at present also It is reasonable control in concrete coordination and construction process.