Effect of temperature on the hydration of the main clinker phases in Portland cements: Part I, neat cements

被引:195
作者
Escalante-Garcia, JI [1 ]
Sharp, JH [1 ]
机构
[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
关键词
D O I
10.1016/S0008-8846(98)00115-X
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The hydration of two Mexican Portland cements has been investigated at five temperatures in the range from 10 to 60 degrees C. Samples were tested after eight periods of hydration during which they were immersed in water for between 1 day and 360 days, using quantitative X-ray diffraction, thermogravimetry, compressive strength determination, and scanning electron microscopy. Increased temperature initially accelerated the hydration of the four major anhydrous phases present in both cements. In the longer term, however, a reduced degree of hydration was observed for the alite and ferrite phases, accompanied by decreased compressive strength and increased apparent porosity. (C) 1998 Elsevier Science Ltd.
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页码:1245 / 1257
页数:13
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