Abstract
From the modern scientific research on the concrete work and a lot of concrete
work proved, concrete structural cracks are inevitable, crack is one of the acceptable
alternatives material properties, rather how to Yaohai Chengdukongzhi in a valid
range.Because of the use of concrete is composed of a variety of materials, a mixture,
and because they are a brittle material, by temperature, pressure and under the action
of external forces, have the possibility of cracks. While the cracks, it has to analyze
what is harmful crack crack, which is harmless to crack an analysis of the causes of
harmful cracks and how to deal with leakage, which is the key to the proposed
Key word : concrete structures, cracks, cause analysis, leakage treatment