Effects of Clay on Properties of Polycarboxylate Superplasticizer and Solutions

• 作 者: 王林 WANG Dongmin
• 机 构: School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architec
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2015年06期
• 关键词: mortar fluidity hydroxide cationic salts inhibiting surfactant incorporation ads

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 fluid mixed mixed with polycarboxylate superplasticizer were studied. Several experiments 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.