▎ 摘　　要

NOVELTY - An alkali-free quick-setting agent comprises alcohol amine, aluminum sulfate, magnesium sulfate and/or magnesium silicate as quick-setting components, reduced component (I) and sulfonated graphene. USE - Alkali-free quick-setting agent. ADVANTAGE - Alkali-free quick-setting agent has low crack resistance and large shrinkage resistance. DETAILED DESCRIPTION - An alkali-free quick-setting agent comprises alcohol amine, aluminum sulfate, magnesium sulfate and/or magnesium silicate as quick-setting components, reduced component of formula (I) and sulfonated graphene. R=16-18C linear or branched alkyl; ZO=2-4C oxyalkylenyl or mixture of 2C or more oxyalkylenyl; m=6-18;and (ZO)m= homopolymer, random copolymer, di-block or multi-block copolymer structure. An INDEPENDENT CLAIM is included for preparation of alkali-free quick-setting agent.