摘要
从T.C.Powers水泥石模型出发,提出了描述水泥混凝土材料初始结构的主要参数是初始孔隙率。由此池绎了水泥浆体组成与结构的定量关系,比原模型有更明了的物理意义,研究结果表明,Powers模型在高孔隙率范围内具有适用性,但不适用于低孔隙率硬化水泥浆体,且在低孔隙率条件下不存在28％的固有凝胶孔隙率,水化产物成份和性质是渐变的。
Based on Powers' model for hardened portland cement paste, a concept of 'initial porosity' which is the main factor determining the initial structure of cement and concrete is proposed, and equations describing quantitatively the relation between composition and structure of hardened portland cement paste are deduced. Experimental results show that Powers' model is only suitable in the case of high W/C ratio. In case of low W/C and low-porosity the so-called '28％ intrinsic gel porosity' does not exist, and the composition and properties of hydration products are gradually.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1991年第3期104-111,共8页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金
关键词
水泥
混凝土
水泥石模型
压汞法
model of cement stone
low porosity
mercury intrusion method
