▎ 摘　　要

NOVELTY - A polycarboxylic acid water reducing agent comprises 0.5-2 parts mass silver compound, 1-2 parts mass graphene oxide, 0.1-0.3 parts mass 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 10-50 parts mass polyether macromonomer, 2-10 parts mass small vinyl monomers, 0.05-1 parts mass initiator and remaining water. USE - Polycarboxylic acid water reducing agent for marine engineering concrete or hydraulic concrete. ADVANTAGE - The polycarboxylic acid water reducing agent is connected by covalent bond and overcomes the problem of agglomeration of nano silver and graphene oxide and has improved antiseptic/antibacterial effects, and improved anti-corrosion, which also overcomes the problem of easily growing bacteria and microorganisms on the surface of marine or hydraulic concrete, and improves its durability and service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the polycarboxylic acid water reducing agent.