▎ 摘　　要

NOVELTY - Modification of concrete regenerated aggregate comprises uniformly spraying modified slurry prepared by nano silicon dioxide, nano graphene oxide dispersion liquid and regenerated concrete micro powder on regenerated aggregate surface. USE - Method for modifying concrete regenerated aggregate used as raw material for making concrete (claimed). ADVANTAGE - The method can effectively reduce the porosity of the regenerated coarse aggregate by modifying the regenerated coarse aggregate produced by the construction waste, improve the density of the regenerated coarse aggregate. The modified regenerated coarse aggregate is used as the raw material for making the concrete, it not only realizes the recycling of the building garbage, and the mechanical strength of the manufactured concrete is obviously improved.