Effect of silica fume and fly ash on heat of hydration of Portland cement

被引：417

作者：

Langan, BW ^{[1
]}

Weng, K

Ward, MA

机构：

[1] Univ Calgary, Dept Civil Engn, Calgary, AB T2N 1N4, Canada

[2] Jacques Whitford Consulting Engineers, Ottawa, ON K1B 1A7, Canada

来源：

CEMENT AND CONCRETE RESEARCH | 2002年 / 32卷 / 07期

关键词：

heat of hydration; Portland cement; fly ash; silica fume;

D O I：

10.1016/S0008-8846(02)00742-1

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Results of calorimeter tests on Portland cement-silica fume-fly ash mixtures are presented. Data indicate that silica fume accelerates cement hydration at high water/cementitious ratios and retards hydration at low water/cementitious ratios. On the other hand, fly ash retards cement hydration more significantly at high water/cementitious ratios. When silica fume and fly ash are added together with cement, the reactivity of the silica fume is hampered and the hydration of the cementitious system is significantly retarded. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1045 / 1051

页数：7