摘要
干缩是混凝土浇捣3d以后的最主要收缩组成部分,在后期,干缩的发展往往与荷载因素共同作用,从而加速裂缝的产生。混凝土的干燥收缩机理通常用毛细孔失水,形成弯月面,在毛细孔张力的作用下产生收缩。本文采用物理图解和数学推导,形象地描述了混凝土干燥收缩的物理力学机制。
The main portion of shrinkage after 3 days from casting is drying shrinkage.Later, crack occurs stepped-up,for dry shrinkage develops together with load.It is generally considered that drying shrinkage occurs because of the capillary tension as a result of water lost from capillary.Physical graphics and mathematical deduction are displayed,to visually describe the mechanism of dry shrinkage of concrete.
出处
《施工技术》
CAS
北大核心
2005年第S2期21-23,共3页
Construction Technology
