▎ 摘　　要

NOVELTY - The graphene oxide modified geopolymer recycled concrete comprises 250-280 pts. wt. fly ash, 360-380 pts. wt. recycled coarse aggregate, 220-240 pts. wt. natural river sand, 170-210 pts. wt. alkali activator, 0.027-0.14 pts. wt. graphene oxide, and 10-46 pts. wt. distilled water. The alkali activator includes sodium hydroxide solution and alkaline sodium silicate solution. The molar ratio of sodium oxide contained in the alkali activator to aluminum oxide in the fly ash is 0.7. The calcium oxide content in the fly ash is greater than 10%. The recycled coarse aggregate is obtained from the waste concrete recycled coarse aggregate of construction demolition wast. The fine aggregate is natural river sand. The graphene oxide is a single-layer graphene oxide. USE - Graphene oxide modified geopolymer recycled concrete used as building material for sewer pipe network of urban sewage treatment system used in urban sewage facilities. ADVANTAGE - The graphene oxide modified geopolymer recycled concrete has good mechanical property, and excellent anti-sulphuric acid corrosion resistance. The service life of the concrete structure in the urban sewage facility is greatly increased, which is more close to the concrete design and use age, thus reducing maintenance and maintenance cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the graphene oxide modified geopolymer regeneration concrete preparation method.