混合材对硫铝酸盐水泥抗折强度倒缩的抑制作用及机理  

Inhibiting effect of admixture on shrinkage of flexural strength of sulphoaluminate cement and its mechanism

作　　者：肖忠明[1] 郭俊萍[1] 

机构地区：[1]中国建筑材料科学研究总院,北京100024

出　　处：《水泥》2017年第3期10-13,共4页Cement

基　　金：国家科技支撑计划(2014BAB15B02-01)

摘　　要：针对硫铝酸盐水泥抗折强度倒缩的现象,探讨了矿渣、粉煤灰、石灰石三种混合材对抑制硫铝酸盐水泥抗折强度倒缩的作用,并就抑制机理进行了分析。结果表明,混合材能够有效抑制硫铝酸盐水泥抗折强度的倒缩,其主要原因是降低了硬化浆体的膨胀率,但石灰石与活性混合材的抑制机理不同。The inhibiting effect of slag, fly ash, limestone on shrinkage offlexural strength of sulphoaluminate cement and its mechanism were discussed. The result showed that the admixture could effectively inhibit the shrinkage of flexural strength of sulphoaluminate cement, and the main reason was that the expansion rate of the hardened paste was decreased, while the inhibiting mechanism of limestone was different from that of active admixture.

关 键 词：硫铝酸盐水泥 强度倒缩 混合材 抑制机理 

分 类 号：TQ172.7[化学工程—水泥工业]