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Effect of Metal Cation on Water Resistance of Magnesium Oxychloride Cement
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Hetian GAO1, Xiaoyang CHEN2, Hongfa YU4, Yan GUAN3, 5, Wanli BI3, 5, Jing LI2
Journal of the Chinese Ceramic Society | 2022, 50(11) : 2826 - 2833
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Journal of the Chinese Ceramic Society | 2022, 50(11): 2826-2833
• Research Articles •
Effect of Metal Cation on Water Resistance of Magnesium Oxychloride Cement
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Hetian GAO1, Xiaoyang CHEN2, Hongfa YU4, Yan GUAN3, 5, Wanli BI3, 5, Jing LI2
Affiliations
  • 1.School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
  • 2.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
  • 3.School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
  • 4.Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • 5.Research Institution of Keda Fengchi Magnesium Building Materials, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China

    • GAO Hetian (1996-), male, Master candidate. E-mail:

About Author:

GAO Hetian (1996-), male, Master candidate. E-mail:

Published: 2022-11-20 doi: 10.14062/j.issn.0454-5648.20211073
Outline
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Magnesium oxychloride cement (MOC) has some advantages like light weight, early strength, low thermal conductivity, and fire resistance, but poor water resistance restricts the application of MOC in civil, construction and other fields. This paper was to improve the water resistance of MOC by using soluble sulfates containing different metal cations as additives. The effect of soluble metal cations on the setting time and compressive strength of MOC was investigated. The phase composition, microstructure and pore structure of modified MOC were characterized by X-ray diffraction, scanning electron microscopy, and mercury intrusion porosimetry. The results show that Al3+, Fe2+, Cu2+ ions and free OH- ions in the MOC slurry can preferentially form a precipitate, inhibiting the formation of Mg(OH)2, delaying the hydration of MgO, prolonging the setting time, reducing the total porosity of the MOC matrix, and improving the water resistance of MOC. In addition, SO42- ions can also improve the stability of 5Mg(OH)2·MgCl2·8H2O after soaking in water through the adsorption and coordination with Mg2+ ions in 5Mg(OH)2·MgCl2·8H2O.

magnesium oxychloride cement  /  soluble sulfate  /  hydration products  /  water resistance
高鹤天, 陈啸洋, 余红发, 关岩, 毕万利, 李晶. 金属阳离子对氯氧镁水泥耐水性的影响. 硅酸盐学报, 2022 , 50 (11) : 2826 -2833 . DOI: 10.14062/j.issn.0454-5648.20211073
Hetian GAO, Xiaoyang CHEN, Hongfa YU, Yan GUAN, Wanli BI, Jing LI. Effect of Metal Cation on Water Resistance of Magnesium Oxychloride Cement[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (11) : 2826 -2833 . DOI: 10.14062/j.issn.0454-5648.20211073
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Year 2022 volume 50 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20211073
  • Receive Date：2021-12-10
  • Online Date：2026-10-20
  • Published：2022-11-20
Article Data
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History
  • Received：2021-12-10
  • Revised：2022-01-20
Funding
Affiliations
    1.School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
    2.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
    3.School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
    4.Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    5.Research Institution of Keda Fengchi Magnesium Building Materials, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China

Corresponding:

GUAN Yan (1971-), female, associate Professor. E-mail:
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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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