Feasibility study on preparation of permeable concrete from coal gangue of Huaihe Energy Group
Cheng Haiyan
Yu Yunfei
Fang Encai
Wang Chuanbing
Wang Changji
Zhao Heng
Li Jian
Abstract：A systematic analysis was conducted on typical coal gangue from seven coal mines and fly ash/ash residue from three power plants affiliated to Huaihe Energy Holding Group Co.,Ltd.The results show that the coal gangue from Huaihe Energy Holding Group has high compressive strength,and the fly ash/ash residue has good activity index,which can be used as aggregates and admixtures re-spectively to prepare permeable concrete.Analysis and testing were conducted on permeable concrete prepared using coal gangue and fly ash.The results showed that this permeable concrete not only achieves a certain degree of permeability(porosity of 15％to 20％)but also possesses sufficient strength(21.0 to 44.8 MPa).It exhibits high technical and economic feasibility and can be widely used in va-rious applications such as road hardening in mining areas,slope stabilization,and sponge city construction.
Keywords：Huaihe Energy Groupcoal ganguefly ash/ashpermeable concrete
Publication Date：2025-12-30
Online Publishing Date：2026-01-31(First online date of this platform, not the publication date of the document)
Pages：4( 8-11 )