Study on Preparation and Performance of Green Polycarboxylic Acid Water Reducing Agent with High Adaptability

Abstract To improve the adaptability of polycarboxylic acid water reducer to different machine-made sands, this paper adopts methacrylic and m-aminobenzene sulfonic obtain esterification monomer then conducts free radical polymerization with highly active polyether macromonomer unsaturated silane under action redox initiator system synthesize green adaptable reducer. The test results showed that molecular weight EPEG was 1200, amount 2%; when dosage γ-Methacryloxypropyltrimethoxysilane 1.5%, apparent viscosity conversion paste are high, which meet design requirements. It named PC-1; According analysis sand concrete, PC-1 added same, initial dispersion performance, slump protection strength workability concrete were equivalent, showing had good sand.