论文部分内容阅读
近年来,混凝土的应用越来越广泛,混凝土的强度不断提高,某些工程根据自身特点需要,在提出高强度的同时,也提出耐久性和施工和易性的要求。
In recent years, the application of concrete is more and more widely, and the strength of concrete is constantly increasing. According to the characteristics of some projects, some projects put forward the requirements of durability and construction workability while putting forward the high strength.