试验利用矿渣、煤矸石作为配制复合水泥的辅助性胶凝材料,研究了矿渣、煤矸石细度和复合比例对复合水泥力学性能的影响,以水泥胶砂强度作为参数反演,找出最佳复合体系.试验结果表明:在矿渣与天然煤矸石组成的复合体系中,矿渣的细度决定了复合水泥的强度,矿渣越细,复合水泥强度越高.当矿渣和天然煤矸石作为混合材取代水泥的总量一定时,所配制的复合水泥强度随着矿渣比例的增大而增大,随煤矸石比例增大而减小.天然煤矸石没有活性,将其煅烧后,活性才能显现.

Slag and coal gangue are used as supplementary cementing materials in the blend cement, and the effect of the fineness and the blend ratio of slag and coal gangue on the strength of the blend cement is studied. With the strength of the cement mortar as the parameter, the best composite system is identified. It is shown that for the composite system consisting of slag and natural gangue, the slag fineness determines the strength of the composite cement, the finer the slag, the higher the strength of the blend cement. With a given total amount of slag and natural coal gangue as the mixed material to replace the cement aggregates, the composite cement strength increases with the increase of the slag proportion and with the decrease of the gangue proportion. The natural coal gangue is not active, and the activity is only shown after calcination.