混凝土结构在长期的使用过程中要承受各种侵袭和破坏,而在这些复杂的环境下保持足够的强度至关重要,这是混凝土最重要的性质,我们称之为混凝土结构的耐久性。一般说来,混凝土结构在使用了三十到四十年后,就进入问题多发期,有可能出现混凝土结构碳化、保护层剥落、裂缝出现、钢筋腐蚀、渗漏层破坏,钢筋化学腐蚀等现象。因此,在施工的过程中关注混凝土结构的耐久性是至关重要不容忽视的课题。严格来说,混凝土的耐久性是指混凝土建筑和结构在必要年限内, Concrete structures are subject to various attacks and damages over long periods of use. Maintaining sufficient strength in these complex environments is of paramount importance. This is the most important property of concrete, which we call the durability of concrete structures. In general, the use of concrete structures in the 30 to 40 years after entering the issue of multiple periods, there may be concrete structure carbonation, protective layer flaking, cracks appear, corrosion of steel, leakage layer damage, corrosion of steel and other phenomena . Therefore, focusing on the durability of concrete structures during the construction process is an issue that can not be ignored. Strictly speaking, the durability of concrete refers to the concrete construction and structure within the necessary years,