硫酸铝渣替代部分矿渣作混合材对水泥性能的影响

Influence of Aluminum Sulfate Tailings Used for Partially Replacing Blast-Furnace Slag as Mixed Materials on Cement Properties

生产硫酸铝排出的尾渣，是一种具有富含活性SiO2的人工火山灰材料，可部分替代矿渣作水泥的混合材。试验结果表明：当硫酸铝渣以3％-10％等量替代部分矿渣作混合材时，可缩短水泥凝结时间，提高水泥28d强度，但标准稠度需水量明显增加。

Aluminum sulfate tailings discharged during the production process of Al2（SO4）3 · 18H2O is a sort of man -made pozzolanic material containing reactive SiO2. It can partially replace blast -furnace slag as mixed materials used in production of cement. Test results showed that using 3% - 10% aluminum sulfate railings replaced equivalent blast -furnace slag as mixed materials, the setting time of the cement can be shortened obviously, and the 28d strength of cement is also increased.