| abstract |
The invention discloses a permeable concrete based on coal gangue, which is composed of raw materials in the following mass fractions: treated coal gangue 65%-70%, calcined coal gangue 16%-24%, water glass 4%-8%, Sodium 2%~5%, water reducing agent 0.5%~1%, water 4%~6%, wherein the coal gangue is treated with a mixed aqueous solution of hydrofluoric acid and acetic acid, and the particle size is 5mm~10mm. , Calcined coal gangue is calcined coal gangue particles with a particle size of less than 2mm. The permeable concrete of the invention all uses solid waste coal gangue as the aggregate and cementing material, and realizes the high strength of the permeable concrete while ensuring the high water permeability of the concrete. |