Investigation of the performance of basic magnesium sulfate cement mortar

被引：2
|
作者：
Xu, Xun [1 ,2 ,3 ]
Li, Yingjiang [1 ]
Sun, Yongtao [1 ]
Yu, Bo [2 ,3 ,4 ]
Hu, Hailong [5 ]
Li, Dan [1 ]
Hu, Zongyue [1 ]
Wang, Shuang [1 ]
Meng, Jie [1 ]
Yu, Bowen [1 ]
机构：
[1] Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
[2] Guangxi Univ, Key Lab Disaster Prevent & Struct Safety, Minist Educ, Nanning, Peoples R China
[3] Guangxi Univ, Guangxi Key Lab Disaster Prevent & Engn Safety, Nanning, Peoples R China
[4] Guangxi Univ, Sch Civil Engn & Architecture, Nanning, Peoples R China
[5] Southwest Univ Sci & Technol, Analyt & Testing Ctr, Mianyang, Peoples R China
来源：
ADVANCES IN CEMENT RESEARCH | 2023年 / 35卷 / 10期
关键词：
basic magnesium sulfate cement; mechanical properties; mortar; water resistance; UN SDG 11; Sustainable cities and communities; CITRIC-ACID; FLY-ASH;
D O I：
10.1680/jadcr.22.00091
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Basic magnesium sulfate cement (BMSC) is a kind of magnesium oxide (MgO)-magnesium sulfate (MgSO4)-water (H2O) modified ternary cementitious material prepared from light burned magnesia, magnesium sulfate heptahydrate, water and additives. The effects of alpha-magnesium oxide/magnesium sulfate ratio (MO/MS), water/magnesium sulfate ratio (W/MS), sand-to-binder ratio (s/b) and superplasticiser dosage (SPD) on the performance of BMSC mortar were studied for the first time in this work. The results showed that for, optimal 28-day flexural strength, alpha-MO/MS = 10:1, W/MS = 16:1, s/b = 0.8 and SPD = 0.3%. For optimal 28-day compressive strength, alpha-MO/MS = 8:1, W/MS = 14:1, s/b = 0.6 and SPD = 0.4%. For best water resistance, alpha-MO/MS = 12.5:1, W/MS = 14:1, s/b = 0.2 and SPD = 0.1%. Based on these results, the basic mix proportion ranges of BMSC mortar should be alpha-MO/MS = 8:1-12.5:1, W/MS = 14:1-16:1, s/b = 0.2-0.6 and SPD = 0.1-0.4%.
引用
收藏
页码：432 / 451
页数：20
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