AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Journal of the Chinese Ceramic Society Article
PDF (12.9 MB)
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article

Effect of Metal Cation on Water Resistance of Magnesium Oxychloride Cement

Hetian GAO1, Xiaoyang CHEN2, Hongfa YU4, Yan GUAN3,5( ), Wanli BI3,5, Jing LI2
School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Research Institution of Keda Fengchi Magnesium Building Materials, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
Show Author Information

Abstract

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.

Keywords

magnesium oxychloride cementsoluble sulfatehydration productswater resistance
CLC number: TB33 Document code: A Article ID: 0454-5648(2022)11-2826-08

References

【1】
【1】
 
 
Crossref Google Scholar
Journal of the Chinese Ceramic Society
Volume 50 Issue 11,
November 2022
Pages 2826-2833
DOI: 10.14062/j.issn.0454-5648.20211073

{{item.num}}

Comments on this article

Go to comment

< Back to all reports

Review Status: {{reviewData.commendedNum}} Commended , {{reviewData.revisionRequiredNum}} Revision Required , {{reviewData.notCommendedNum}} Not Commended Under Peer Review

Review Comment

Cite this Report
Close
Close
Cite this article:
GAO H, CHEN X, YU H, et al. Effect of Metal Cation on Water Resistance of Magnesium Oxychloride Cement. Journal of the Chinese Ceramic Society, 2022, 50(11): 2826-2833. https://doi.org/10.14062/j.issn.0454-5648.20211073

1137

Views

10

Downloads

0

Crossref

0

Web of Science

4

Scopus
Received: 10 December 2021
Revised: 20 January 2022
Published: 11 October 2022
© 2022 Journal of the Chinese Ceramic Society