The specimens of sifted coal gangue with different particle size were admixed with Portland cement to prepare the coal gangue-cement system with different grain grade.

• 通过筛分得到不同颗粒级配的煤矸石,将其与硅酸盐水泥进行混合,得到具有不同颗粒级配的煤矸石-水泥体系。