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Volume Stability and Hydration Characteristics of Magnesium Silicate Cementious Materials
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Qian WANG1, Zhihong WU1, 2, Guoli ZHANG1, Luping ZHANG1, Haikang ZHENG1
Journal of the Chinese Ceramic Society | 2020, 48(5) : 682 - 688
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Journal of the Chinese Ceramic Society | 2020, 48(5): 682-688
Volume Stability and Hydration Characteristics of Magnesium Silicate Cementious Materials
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Qian WANG1, Zhihong WU1, 2, Guoli ZHANG1, Luping ZHANG1, Haikang ZHENG1
Affiliations
  • 1.College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
  • 2.State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China

    • WANG Qian (1994-), female, Master candidate. E-mail:

About Author:

WANG Qian (1994-), female, Master candidate. E-mail:

Published: 2020-05-20 doi: 10.14062/j.issn.0454-5648.2020.05.20190480
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The relationships among the fluidity, setting time, and pH value of hydrated magnesium silicate (MgO-SiO2-H2O, M-S-H) prepared by silica fume (SF) and MgO after calcination at different temperatures were investigated, and the strength and shrinkage characteristics of M-S-H cementious materials were analyzed. The effect of MgO on the hydrated products of MgO-SF and the structure of M-S-H at different calcination temperatures was investigated by X-ray diffraction and thermogravimetric analysis. The results show that the intensity of MgO diffraction peak increases, the peak width becomes narrower, the grain size increases, and the activity decreases as the calcination temperature increases. The contents of Mg(OH)2 and M-S-H in the pure pulp prepared by calcining MgO at 1 150 ℃ are the highest, and the degree of polymerization of M-S-H silicon tetrahedron becomes the maximum value. The MgO-SF pulp and mortar slump prepared by calcining MgO at 1 150 ℃ are 129 mm and 206 mm, respectively, in accordance with the large-flow concrete. The pH value and setting time of the pulp are moderate, the mortar strength is high, and the dry shrinkage rate (εt) is the minimum value. εt is positively correlated to the change in Mg(OH)2 content.

hydrated magnesium silicate  /  drying shrinkage characteristics  /  hydration product  /  magnesium oxide
王倩, 武志红, 张国丽, 张路平, 郑海康. 硅酸镁胶凝材料体积稳定性及水化特性. 硅酸盐学报, 2020 , 48 (5) : 682 -688 . DOI: 10.14062/j.issn.0454-5648.2020.05.20190480
Qian WANG, Zhihong WU, Guoli ZHANG, Luping ZHANG, Haikang ZHENG. Volume Stability and Hydration Characteristics of Magnesium Silicate Cementious Materials[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (5) : 682 -688 . DOI: 10.14062/j.issn.0454-5648.2020.05.20190480
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Year 2020 volume 48 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.2020.05.20190480
  • Receive Date：2019-07-08
  • Online Date：2026-10-29
  • Published：2020-05-20
Article Data
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History
  • Received：2019-07-08
  • Revised：2019-11-29
Funding
Affiliations
    1.College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
    2.State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China

Corresponding:

WU Zhihong (1974-), male, Ph.D., Associate Professor. E-mail:
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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