粉煤灰-碱渣-水泥混合料砂浆的配制实验研究

Study on Experimental Preparation of Cement Mortar Incorporating Fly Ash-soda Residue

利用氨法制碱的碱渣作为掺合料替代粉煤灰配制建筑砂浆,并与粉煤灰-水泥砂浆的物理、力学性能进行了对比分析。结果表明:碱渣作为掺合料配制的建筑砂浆具有与粉煤灰-水泥砂浆类似的物理、力学性能,以碱渣与粉煤灰复掺的砂浆性能最好,当掺合料取代水泥量为30%、粉煤灰与碱渣的比例为2:1时,粉煤灰-碱渣-水泥砂浆的力学性能接近水泥砂浆的强度,并且具有良好的工作性。碱渣可以替代或部分替代粉煤灰作为建筑砂浆的掺合料,具有良好的经济效益和环保效益。

Soda residue from ammonia-soda process was taken as admixture substituting for fly-ash to prepare building mortar.The physical and mechanical properties of fly ash-cement mortar and soda residue-cement mortar were studied.The results showed that soda residue-cement mortar has similar physical and mechanical properties with that of fly ash-cement mortar,especially for fly ash and soda residue as compound admixture of mortar.When equivalent replacement of cement with soda residue and fly ash reaches 30%,and the radio of fly ash and soda residue is 2：1,the fly ash-soda residue-cement mortar showed the best mechanical performance similar to cement mortar under similar experimental conditions,and with better workability.Therefore soda residue can total or partly substitute fly ash as mortar admixture with remarkable economic efficiency and environmental protection benefit.