Effects of Clay on Properties of Polycarboxylate Superplasticizer and Solutions  

作　　者：王林 WANG Dongmin 

机构地区：[1]School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture [2]School of Chemical and Environmental Engineering, China University of Mining and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第6期1167-1171,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(50872151);the Beijing Municipal Education Commission Program Projects and Beijing University of Civil Engineering and Architecture,Dr.Fund

摘　　要：The infl uence law of clay on mortar fluidity mixed with polycarboxylate superplasticizer was studied. Several methods of inhibiting clay adsorption of polycarboxylate superplasticizer were discussed. The experimental results show that clay has signifi cant effect on the dispersion of polycarboxylate superplasticizer and montmorillonite clay has more signifi cant impact on mortar fluidity than other clays. The pH value and the salts of the solution can affect the adsorption of clay to polycarboxylate superplasticizer. The incorporation of a small amount of sodium hydroxide solution, sodium silicate or cationic surfactants can improve the effect of the clay on the dispersion of polycarboxylate superplasticizer.The infl uence law of clay on mortar fluidity mixed with polycarboxylate superplasticizer was studied. Several methods of inhibiting clay adsorption of polycarboxylate superplasticizer were discussed. The experimental results show that clay has signifi cant effect on the dispersion of polycarboxylate superplasticizer and montmorillonite clay has more signifi cant impact on mortar fluidity than other clays. The pH value and the salts of the solution can affect the adsorption of clay to polycarboxylate superplasticizer. The incorporation of a small amount of sodium hydroxide solution, sodium silicate or cationic surfactants can improve the effect of the clay on the dispersion of polycarboxylate superplasticizer.

关 键 词：clay polycarboxylate superplasticizer fluidity adsorb 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]