Pore size distribution and degree of hydration of metakaolin-cement pastes

被引：203
|
作者：
Frías, M [1 ]
Cabrera, J [1 ]
机构：
[1] Univ Leeds, Civil Engn Mat Unit, Sch Civil Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
CEMENT AND CONCRETE RESEARCH | 2000年 / 30卷 / 04期
关键词：
metakaolin; blended cement; porosity; degree of hydration;
D O I：
10.1016/S0008-8846(00)00203-9
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The current paper shows the results of an investigation focussing on the effect of metakaolin (MK) on the microstructure of MK blended pastes. Pastes containing 0%, 10%, 15%, 20% and 25% of MK were prepared at a constant water/binder ratio of 0.55 and cured at 20 degrees C for hydration periods from 1 to 360 days. On the one hand, the total, capillary, and gel porosity evolution with the curing time has been investigated. On the other hand, a method to estimate the degree of hydration in MK/OPC mixes is proposed in this paper. The values of the degree of hydration are calculated from the amount of Ca(OH)(2) present in the paste and from the data of differential thermal analysis (DTA) and thermogravimetry (TG). A good correlation between porosity and degree of hydration has been found. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：561 / 569
页数：9
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