▎ 摘　　要

NOVELTY - Low-resilience enhancement type non-alkali liquid accelerator comprises 40-55 wt.% polymeric aluminum sulfate, 0.5-8 wt.% fluorine-modified silicate, 5-10 wt.% nano graphene oxide, 1-5 wt.% organic amine and 35-53 wt.% water. USE - The accelerator is useful in injection of concrete (claimed). ADVANTAGE - The accelerator has no harm to skin, low dosage, low resilience, and improves spraying concrete intensity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing low-resilience enhancement type non-alkali liquid accelerator comprising (i) dissolving 5-40 wt.% fluorine silicate in 60-95% liquid, adding nano silicon dioxide dispersion, stirring for 1-4 hours under high shear conditions, and then high-speed cutting at a speed of 1000-5000 per seconds to obtain modified fluorine silicate, and (ii) adding polymerized aluminum sulfate, modified silicate, nano graphene oxide, organic amine and water into a reaction kettle, and then uniformly mixing at 35-55 degrees C to obtain final product; and (2) use of low-resilience enhancement type non-alkali liquid accelerator in injection of concrete.