▎ 摘　　要

NOVELTY - A nano modified lead-containing cement-based composite material comprises 400-500 pts. wt. Portland cement, 100-200 pts. wt. fly ash, 500-1000 pts. wt. sand, 500-1000 pts. wt. lead-containing glass particles, 1-3 pts. wt. polycarboxylic acid water reducing agent, 0.2-0.6 pt. wt. graphene oxide, and water. The sum total content of Portland cement and fly ash is 0.45-0.5. USE - Nano modified lead-containing cement-based composite material used as building material. ADVANTAGE - The composite material is environmentally-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the composite material.