▎ 摘　　要

NOVELTY - Reinforcing recycled concrete by using graphene oxide comprises (i) dispersing the graphene oxide modified water reducing agent and 3-aminopropyltriethoxysilane in water and sonicating for 2-4 hours to obtain dispersion, (ii) adding carbon nanotubes into the 50 times of absolute ethanol, and uniformly dispersing the carbon nanotubes to obtain carbon nanotube dispersion, (iii) mixing cement, sand, recycled coarse aggregate, mineral powder, and nano silica in the blender for 30-60 minutes to obtain homogeneous mixture, and(iv) adding the carbon nanotube dispersion liquid obtained in the step (ii) and the mixture obtained in the step (iii) into the dispersion liquid obtained in the step (i), and uniformly stirring the mixture to obtain graphene oxide-reinforced recycled concrete. USE - The method is useful for reinforcing recycled concrete by using graphene oxide. ADVANTAGE - The method: improves the corrosion resistance of concrete, and wear resistance; produces product has excellent toughness, crack resistance, impact resistance and impermeability.