▎ 摘　　要

NOVELTY - A multifunctional enhanced concrete admixture contains polycarboxylate superplasticizers (PCs) and nano graphene oxide (GO) with mass ratio of 10-30:1 in which PCs contain 80 pts. wt. unsaturated polyether, 8-12 pts. wt. acrylate, 1.5-4 pts. wt. radical monomer, 0.5-1.8 pts. wt. chain transfer agent, 0.6-2 pts. wt. initiator, 0.12-0.3 pt. wt. reducing agent, 8.4-13.2 pts. wt. neutralizing alkali solution, and 150-200 pts. wt. water. USE - A multifunctional enhanced concrete admixture (claimed). ADVANTAGE - Admixture has high strength, long service life, high water reducing property, reduced sensitivity to inorganic salt, increased hydration rate, improved dispersibility, and good adaptability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of multifunctional enhanced concrete admixture which involves adding unsaturated polyether and 50-60 pts. wt. water into reactor, stirring at 200-300 rpm, adding initiator, adding acrylate, radical monomer, and 20-30 pts. wt. water, stirring, shaking, dripping material 1, adding chain transfer agent, reducing agent, and 30-40 pts. wt. water, shaking, dripping material 2, reacting at 30-60 degrees C under stirring condition, dropping material 1 and material 2, adjusting pH to 6-7 using neutralizing alkali solution, adding 50-70 pts. wt. water, uniformly mixing to obtain PCs, and compounding PCs and GO.