Abstract:The basic properties of coal gangue produced in four regions in China were investigated, and the effect of coal gangue as aggregate in cementitious materials on the frost resistance and the acid corrosion resistance were studied. Results show that the main components of each coal gangue selected in this paper are quartz, montmorillonite, siderite and other mineral, but the oxidation content is quite different. The uniaxial compressive strength of each coal gangue is reduced by more than 55% after complete soaking. After 28 freeze-thaw cycles, the order of mass loss rate of each coal gangue is Yu Lin, Chang Zhi, Tai Yuan, Xu Chang. After acid corrosion, the crushing index of coal gangue produced in Chang Zhi increase is the biggest. For the concrete with C30 grade incorporating Xu Chang coal gangue, when the replacement of coal gangue to stonelime is beyond 30%, the frost resistance of concrete decreases obviously. With the coal gangue content increasing, concrete acid corrosion resistance is on the decline, but not significant. For the CFG-Chang Zhi, after 140d acid corrosion, the mass loss is greater than 5%, the compressive corrosion coefficient is lower than 0.8 and its acid corrosion resistance reduced significantly, but the changes of other kinds of coal gangue CFG’s acid corrosion resistance is not significantly.