钢筋混凝土构件的设计与施工,除了满足结构上的安全使用和经济合理的要求外,还应有良好的耐久性,使构件在预期的使用年限内,不致因为受到各种自然因素如冻融、风化、碳化、机械磨损和化学浸蚀等客观影响,导致混凝土的破坏或钢筋严重锈蚀而降低结构的安全度。轻骨料混凝土具有自重轻、保温性能好等优点,但是对钢筋的保护性能如何,却是人们关心的问题,本文仅从常遇条件下的混 The design and construction of reinforced concrete members should not only meet the requirements for safe use and economical and reasonable construction, but also have good durability so that the components will not be subjected to various natural factors such as freezing and thawing within the expected service life. The objective effects of weathering, carbonization, mechanical wear, and chemical etching have led to the destruction of concrete or severe corrosion of steel bars and reduced the safety of the structure. Lightweight aggregate concrete has the advantages of light weight, good heat preservation performance, etc. However, how to protect the reinforcing steel is a problem that people are concerned about.