ArticleScientific reports2024
Investigations on mineralogical characteristics and feasibility of coal gangue as a concrete aggregate from guizhou province, China.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
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5 authors.
Funding
Abstract
Coal gangue (CG) is an industrial solid waste produced by coal mining and separation that is considered to have a significant effect on the soil or water environment when exposed to the air, exacerbating ecological pollution. The comprehensive utilization of CG has always been a difficult problem due to the complex mineralogical characteristics. Producing concrete aggregates with CG is an effective strategy for utilising CG resources synthetically. This work studied the mineralogical characteristics of CG discharged from a coal mine in Guizhou Province, China, and the feasibility of producing concrete coarse aggregate by using CG particles. The results indicated that some CGs were mainly composed of coal particles, whereas others were mainly composed of noncoal particles. Based on their apparent characteristics, texture, and cross-sectional characteristics, the CG samples at this sampling point could be divided into 8 categories, and the mass ratio suitable for concrete aggregate production was less than 50%. The average pore size of CG was 5.5 nm smaller than that of the industrial (IS) aggregate, but its porosity and total pore area were 2.31% and 4.5 m
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