混凝土因其取材广泛、价格低廉、抗压强度高、可浇筑成各种形状,并且耐火性好、不易风化、养护费用低,成为当今世界建筑结构中使用最广泛的建筑材料。但大量的工程实践和理论分析表明,几乎所有的混凝土构件均是带裂缝工作的,只是有些裂缝很细, Due to its wide range of materials, low cost, high compressive strength, concrete can be poured into a variety of shapes, and good fire resistance, easy weathering, low maintenance costs, become the world’s most widely used architectural building materials. However, a large number of engineering practice and theoretical analysis show that almost all of the concrete components are working with cracks, but some cracks are very small,