Synthesis and Properties of a New Clay-resistant Polycarboxylic Acid Water Reducer Research

Abstract

Abstract Due to the shortage of high-quality natural sand, the development of the polycarboxylic acid water reducer with excellent clay resistance has become a research hotspot in recent years. Using acrylic acid, methyl 4-vinylbenzoate, ethylene glycol monovinyl polyethylene glycol ether with a molecular weight of 3000 (EPEG-3000) as comonomers, under the action of sodium bisulfite formaldehyde-hydrogen peroxide redox initiator system initiating system and chain transfer agent mercaptoethanol, a new clay-resistant polycarboxylic acid water reducer with excellent performance was synthesized, named as KZJ-KN. KZJ-KN has the characteristics of high monomer conversion, small adsorption capacity on clay and excellent anti-sludge performance.