KINETICS OF TRICALCIUM SILICATE HYDRATION IN DILUTED SUSPENSIONS BY MICROCALORIMETRIC MEASUREMENTS

被引：85
|
作者：
DAMIDOT, D
NONAT, A
BARRET, P
机构：
[1] Laboratoire de Recherches sur la Réactivité des Solides, Faculté des Sciences Mirande, Dijon
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 11期
关键词：
calorimetry; cements; hydration; kinetics; silicates;
D O I：
10.1111/j.1151-2916.1990.tb06455.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Investigations of tricalcium silicate (C3S) suspensions using different techniques have shown the initial hydration kinetics of C3S are strongly dependent on the water/C3S ratio. In order to provide new experimental data on the hydration, we have adapted a Tian‐Calvet heat flow isothermal microcalorimeter to study thermal flow variation released by C3S stirred suspensions in water and saturated lime water. We observed three exothemic peaks and one endothermic peak. Their relative magnitude and duration depend on the W/C ration and the lime solution concentration. The protective layer theory appears to be consistent with our results for high W/C ratio. Moreover, portlandite precipitation seems to be a consequence and not the cause of the acceleratory period. Copyright © 1990, Wiley Blackwell. All rights reserved
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页码：3319 / 3322
页数：4
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