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

页码：432 / 451

页数：20

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