▎ 摘　　要

NOVELTY - Preparation of concrete anti-freezing agent involves mixing water and ethanol to obtain a mixture (A), dispersing graphene in the mixture (A), adding hexamethylene diisocyanate and N-methylpyrrolidone to obtain a mixture (B), mixing water, ethylene glycol, urea, calcium formate, mixture (B) and nano-calcium carbonate and drying. USE - Preparation of concrete anti-freezing agent. ADVANTAGE - The prepared anti-freezing agent can effectively improve the antifreeze properties of concrete and improves the use field and use performance of the building materials.