摘要
论述了坝工混凝土及其建筑物的寿命 ,以及耐久寿命衰变规律 ,对混凝土坝必须引入设计寿命的追求目标 ,国外坝工界认为混凝土坝的耐久寿命至少 1 0 0 a。在混凝土材料中存在一种最理想的长寿混凝土 ,即 W0C=0 .38波特兰水泥引气混凝土 ,其成熟的混凝土的“半衰期”可达约 35 0 a,“平均寿命”可达 5 0 0
This article discusses the service life of the dam concrete and concrete structures. The decay rules of their durable life with corresponding equations are provided. In the concrete family, there exists a most satisfactory long life concrete.i.e. Portland cement air entrained concrete with W 0/C=0.38, the semi decay period of hardened concrete can last about 350 years, and its average lifetime can be 500 years.
出处
《长江科学院院报》
CSCD
北大核心
2000年第2期18-21,共4页
Journal of Changjiang River Scientific Research Institute
关键词
混凝土
耐久寿命
衰变规律
大坝
半衰期
durable life of dam concrete
lifetime decay equation
criterion's life period
semi decay period
average life period
