Fractal Characteristics of Pore Structure of Coal Gangue Aggregate Concrete under Freeze–Thaw Environment

Abstract

AbstractIn the accumulation of coal gangue, a substantial amount of heavy metal elements is released, contaminating the environment. However, crushing and screening coal gangue for concrete preparation presents a green and more sustainable alternative. ...Practical ApplicationsCoal gangue, a mining waste that pollutes soil and water with heavy metals, can be turned into ecofriendly concrete by adding silica fume. This innovation doubles freeze–thaw resistance (150 cycles), enabling use in cold-climate ...