Research Development of Magnesium Silicate Hydrate Cement

被引：0
|
作者：
Song Q. [1 ]
Hu Y. [1 ]
Wang Q. [1 ]
Zhang J. [1 ]
Chen Y. [1 ]
机构：
[1] College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 11期
关键词：
Magnesium oxide; Magnesium silicate hydrate; Reaction mechanism; Silica fume;
D O I：
10.14062/j.issn.0454-5648.2019.11.16
中图分类号：
学科分类号：
摘要：
The reaction of MgO and soluble silica form magnesium silicate hydrate gel ((MgO)x-SiO2-(H2O)y, M-S-H). With different chemical compositions, poorly crystalline phases and sheet structures of silicon-oxy tetrahedron, and M-S-H is responsible for the compressive strength development. The formation rate of M-S-H depends on the activity of reactants, reactive MgO and silica fume are the common reactants. The reaction of mixture of MgO and silica fume with water is exothermic, and the hydration heat emission rate and quantity are associated with MgO reactivity. The weak alkalinity of solution of pastes shows a promising in potential applications as building materials. This review presented the reaction mechanisms, composition, pore solution chemistry, heat evolution, strength and workability, and analyzed the factors affecting the properties mentioned above. The effect of Mg2+ on C-S-H and Ca2+ on M-S-H calcium was summarized. In addition, the development of magnesium silicate hydrate cement in the future was also discussed. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1642 / 1651
页数：9
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