硅酸盐通报2017，Vol.36Issue(4)：1125-1129,1142,6.
不同粘土矿物与聚羧酸减水剂相互作用机理研究
Mechanism of Interaction between Different Clay Minerals and Polycarboxylate Superplasticizer
摘要
Abstract
The interaction mechanisms between different clay minerals and polycarboxylate superplasticizer (PC) were discussed with XRD, IR and TOC, saturated water absorption and fluidity.The results show that the side chains of PC can be intercalated into the interlayer of montmorillonite (MMT), thereby causing the interlayer absorption, whereas PC is not able to be inserted into the interlayer of kaolinite, sepiolite and illite;and the only surface adsorption can be observed and the order of adsorption amount montmorillonite > kaolinite > sepiolite > illite.The results of saturated water absorption indicate that the orders of different clay minerals are montmorillonite > kaolinite > sepiolite > illite.The presence of clay minerals would reduce the fluidity of cement-PC paste, and the effect of montmorillonite is the greatest.Therefore, the main reason for the fluidity loss is attributed to absorption of free water and adsorption of polycarboxylate superplasticizer caused by clay minerals.关键词
聚羧酸减水剂/粘土矿物/插层反应/吸附量/作用机理Key words
polycarboxylate superplasticizer/clay mineral/intercalation/adsorption amount/mechanism分类
建筑与水利引用本文复制引用
郭玉林,胡家兵,谭洪波,马保国,顾本庆..不同粘土矿物与聚羧酸减水剂相互作用机理研究[J].硅酸盐通报,2017,36(4):1125-1129,1142,6.基金项目
国家自然科学基金(51408448) （51408448）
