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

被引：18

作者：

Zheng, Weixin ^{[1
,2
]}

Xiao, Xueying ^{[1
,2
]}

Wen, Jing ^{[1
,2
]}

Chang, Chenggong ^{[1
,2
]}

An, Shengxia ^{[3
,4
]}

Dong, Jingmei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China

[2] Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Peoples R China

[3] Qinghai Bldg & Mat Res Co Ltd, Xining 810008, Peoples R China

[4] Key Lab Plateau Bldg & Ecocommunity, Xining 810008, Peoples R China

来源：

SUSTAINABILITY | 2021年 / 13卷 / 05期

关键词：

magnesium oxychloride cement; bischofite; water-to-cement ratio; caustic dolomite; light-burned magnesite;

D O I：

10.3390/su13052429

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 Baume degree of a magnesium chloride solution after bischofite (MgCl2 center dot 6H(2)O) 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.

引用

页码：1 / 12

页数：12

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