混凝土是一种由砂石骨料、水泥、水及其他外加材料混合而成的非均质脆性材料。由于混凝土施工、本身变形和约束等一系列问题,使混凝土裂缝成了土木、水利、桥梁、隧道等工程中最常见的工程病害。轻者使内部的钢筋等材料产生腐蚀,降低钢筋混凝土材料的承载能力、耐久性等,严重的将威胁到人民的生命、财产。 Concrete is a heterogeneous, brittle material that is a mixture of gravel aggregates, cement, water and other materials. Due to a series of problems such as concrete construction, deformation and constraint, concrete cracks have become the most common engineering diseases in civil engineering, water conservancy, bridges and tunnels. The light of the internal corrosion of steel and other materials to reduce the carrying capacity of reinforced concrete materials, durability, etc., will seriously threaten the lives of people, property.