Reaction products of MgO and microsilica cementitious materials at different temperatures

被引：0
|
作者：
Jiangxiong Wei
Qijun Yu
Wensheng Zhang
Hongtao Zhang
机构：
[1] South China University of Technology,School of Materials Science and Engineering
[2] China Building Materials Academy,Research Institute of Cement and New Building Materials
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2011年 / 26卷
关键词：
MgO; microsilica; magnesium silicate hydrate (M-S-H);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paste was prepared by mixing MgO, microsilica and H2O in the presence of water reducer at different reaction ratios and temperatures, and characterized by XRD, DTA, TGA, IR, and solid-state 29Si NMR. The experimental results showed that, besides Mg(OH)2, magnesium silicate hydrate (M-S-H) was formed at a low temperature such as 25 and 50 °C. At a high temperature of 100 °C, Mg(OH)2 can be further transformed into M-S-H completely, for instance, within ca. 1 month in an excess of microsilica. The average composition and structure of M-S-H was mainly related to the reaction mixture and curing temperature and was discussed in detail.
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页码：745 / 748
页数：3
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