Innovate geopolymer synthesis for green mine road construction: Analysis of efflorescence behavior and strength analysis

被引：15

作者：

Lu, Xiang ^{[1
,2
]}

Tian, Ya ^{[1
,2
]}

Jiskani, Izhar Mithal ^{[3
]}

Zhou, Wei ^{[2
,4
]}

Zhao, Binyu ^{[5
]}

Ding, Xiaohua ^{[1
,2
]}

Ao, Zhongchen ^{[1
,2
]}

机构：

[1] China Univ Min & Technol, Sch Mines, Xuzhou 221116, Peoples R China

[2] China Univ Min & Technol, High Tech Res Ctr Open Pit Mines, Xuzhou 221116, Jiangsu, Peoples R China

[3] Aalborg Univ, Dept Sustainabil & Planning, DK-9000 Aalborg, Denmark

[4] China Univ Min & Technol, State Key Lab Coal Explorat & Intelligent Min, Xuzhou 221116, Peoples R China

[5] SPIC Nei Mongol Energy Co Ltd, Huolinhe South Mine, Holingola 029200, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 401卷

基金：

中国国家自然科学基金;

关键词：

Open-pit mine; Road reconstruction; Solid mine waste; Geopolymer; Alkali activator; Efflorescence;

D O I：

10.1016/j.conbuildmat.2023.132963

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Waste generated from coal mining and consumption causes severe pollution. This study used open-pit mine road aggregate (OMRA), ground granulated blast-furnace slag (GGBS), and coal fly ash (CFA) to synthesize geo-polymers for road construction in surface mines. The influences of multiple factors on efflorescence behavior were investigated. Findings reveal that increasing the modulus of the alkali activator, contents of slag and alkali activator, and isolating air contact reduces efflorescence and enhances mechanical strength. The optimized synthesis scheme was applied on-site, showing no efflorescence after construction, and satisfying the strength requirements of open-pit mine roads.

引用

页数：13

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