In concrete construction,inevitable meeting structural cracks,the cause of structural cracks can be divided into three kinds of loads,the direct stress caused by the structure of the crack,cracks,stress causes times by deformation and temperature changes (i.e.,contraction,mainly by the uneven settlement or expansion etc) changes.The modern scientific research and engineering practice has proved a lot of concrete cracks in the concrete engineering,the problem is inevitable,in a certain range of acceptable,but also to take effective measures to control the harm degree in a certain range.But in construction should take effective measures to control the crack,no crack or to minimize the number of crack width and should be avoided,especially the harmful cracks in and thus ensure the engineering quality.Based on some concrete cracks in common problems are discussed according to specific circumstances,and puts forward some prevention and treatment measures.
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