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Sustainability
Volume 13
Issue 5
10.3390/su13052429
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Article

Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder

by
Weixin Zheng
1,2,*,
Xueying Xiao
1,2,
Jing Wen
1,2,
Chenggong Chang
1,2,
Shengxia An
3,4 and
Jingmei Dong
1,2,*
1
Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
2
Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China
3
Qinghai Building and Materials Research Co., Ltd., Xining 810008, China
4
The Key Lab of Plateau Building and Eco-Community, Xining 810008, China
*
Authors to whom correspondence should be addressed.
Sustainability 2021, 13(5), 2429; https://doi.org/10.3390/su13052429
Submission received: 27 January 2021 / Revised: 19 February 2021 / Accepted: 19 February 2021 / Published: 24 February 2021
(This article belongs to the Special Issue Sustainable High-Performance Hydraulic Concrete)
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Abstract

Magnesium oxychloride cement (MOC) foam concrete (MOCFC) is an air-hardening cementing material formed by mixing magnesium chloride solution (MgCl2) and light-burned magnesia (i.e., active MgO). In application, adding caustic dolomite powder into light-burned magnesite powder can reduce the MOCFC production cost. The brine content of MOC changes with the incorporation of caustic dolomite powder. This study investigated the relationship between the mass percent concentration and the Baumé degree of a magnesium chloride solution after bischofite (MgCl2·6H2O) from a salt lake was dissolved in water. The proportional relationship between the amount of water in brine and bischofite, and the functional formula for the water-to-cement ratio (W/C) of MOC mixed with caustic dolomite powder were deduced. The functional relationship was verified as feasible for preparing MOC through the experiment.
Keywords: magnesium oxychloride cement; bischofite; water-to-cement ratio; caustic dolomite; light-burned magnesite magnesium oxychloride cement; bischofite; water-to-cement ratio; caustic dolomite; light-burned magnesite

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MDPI and ACS Style

Zheng, W.; Xiao, X.; Wen, J.; Chang, C.; An, S.; Dong, J. Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder. Sustainability 2021, 13, 2429. https://doi.org/10.3390/su13052429

AMA Style

Zheng W, Xiao X, Wen J, Chang C, An S, Dong J. Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder. Sustainability. 2021; 13(5):2429. https://doi.org/10.3390/su13052429

Chicago/Turabian Style

Zheng, Weixin, Xueying Xiao, Jing Wen, Chenggong Chang, Shengxia An, and Jingmei Dong. 2021. "Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder" Sustainability 13, no. 5: 2429. https://doi.org/10.3390/su13052429

APA Style

Zheng, W., Xiao, X., Wen, J., Chang, C., An, S., & Dong, J. (2021). Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder. Sustainability, 13(5), 2429. https://doi.org/10.3390/su13052429

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