试验研究了油页岩CFB粉煤灰中未燃炭、颗粒粒径等对水泥胶砂试样流动度和力学性能的影响,探讨其在混凝土掺合料方面应用的可行性。结果表明:油页岩CFB粉煤灰等量替代水泥后提高了水泥胶砂达到相同流动度时的用水量,去除未燃炭和减小颗粒粒径对水泥胶砂用水量影响不大;颗粒粒径的减小大大提高了粉煤灰对水泥胶砂力学性能的贡献。水泥净浆SEM结果显示:未粉磨的原状粉煤灰引入到水泥体系中增加了硬化体的缺陷,而粉磨后的粉煤灰引入到水泥体系中可以增加硬化体的密实度,从而对水泥浆体做出积极贡献。 The effects of unburned carbon and particle size on the fluidity and mechanical properties of cement mortar samples were investigated and the feasibility of their application in concrete admixtures was discussed. The results show that the equivalent amount of CFB fly ash instead of cement increases the water consumption when the cement mortar reaches the same degree of fluidity. Removing unburned carbon and reducing the particle size have little effect on the water consumption of cement mortar. Granules The reduction of diameter greatly improves the contribution of fly ash to the mechanical properties of cement mortar. The SEM results of cement paste show that the introduction of un-ground raw fly ash into the cement system increases the defects of the hardened body. The introduction of pulverized fly ash into the cement system can increase the solidity of the hardened body, Cement paste make a positive contribution.