混凝土是一种由砂石骨料、水泥、水及其他外加材料混合而形成的非均质脆性材料。由于混凝土施工和本身变形、约束等一系列问题,硬化成型的混凝土中存在着众多的微孔隙、气穴和微裂缝,在实际工程中要区别对待,根据实际情况解决问题。 Concrete is a heterogeneous, brittle material that is a mixture of gravel aggregates, cement, water and other additional materials. Due to a series of problems such as concrete construction and its own deformation and restraint, there are many micro-pores, air pockets and micro-cracks in the hardened concrete, which should be treated differently in practical engineering and solved according to the actual situation.