TY - JOUR
T1 - Innovate geopolymer synthesis for green mine road construction
T2 - Analysis of efflorescence behavior and strength analysis
AU - Lu, Xiang
AU - Tian, Ya
AU - Jiskani, Izhar Mithal
AU - Zhou, Wei
AU - Zhao, Binyu
AU - Ding, Xiaohua
AU - Ao, Zhongchen
PY - 2023/10/19
Y1 - 2023/10/19
N2 - 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 geopolymers 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.
AB - 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 geopolymers 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.
KW - Open-pit mine
KW - Road reconstruction
KW - Solid mine waste
KW - Geopolymer
KW - Alkali activator
KW - Efflorescence
UR - http://www.scopus.com/inward/record.url?scp=85172417621&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2023.132963
DO - 10.1016/j.conbuildmat.2023.132963
M3 - Journal article
SN - 0950-0618
VL - 401
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 132963
ER -