DIFFERENTIAL THERMAL METHOD OF ESTIMATING CALCIUM HYDROXIDE IN CALCIUM SILICATE AND CEMENT PASTES

被引：56
作者：
RAMACHANDRAN, VS
机构：
来源：
CEMENT AND CONCRETE RESEARCH | 1979年 / 9卷 / 06期
关键词：
D O I：
10.1016/0008-8846(79)90062-0
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
DTA is applied to estimate Ca(OH)2 in cementitious phases by determining the peak areas caused by the decomposition of Ca(OH)2 to CaO+H2O. In the hydration of C3S generally, the chemical method yields slightly higher values. DTA is also used as a monitoring technique in preparing a practically Ca(OH)2-free product from hydrated portland cement or hydrated C3S. Hydrated portland cement or C3S has now been exposed to an unsaturated Ca(OH)2 solution and extraction continued until the sample indicate no endothermal peak for Ca(OH)2. The thermal method permits determination of the rate of formation of Ca(OH)2 in portland cement hydrated in the presence of 0, 1, 2 and 3 1 2 per cent CaCl2. © 1979.
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页码：677 / 684
页数：8
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