▎ 摘　　要

NOVELTY - Environmentally-friendly composite modified emulsified asphalt comprises 90-110 pts. wt. emulsified asphalt, 3-8 pts. wt. tetrabutyl titanate, 0.30-0.55 pt. wt. ammonium nitrate or 0.65-0.95 pt. wt. urea, 0.01-0.05 pt. wt. cobalt nitrate, 0.3-1.0 pts. wt. nano graphene micro-sheet, 3-8 pts. wt. cationic styrene-butadiene latex, 0.05-0.20 pt. wt. thickener and 0.1-0.3 pt. wt. stabilizer. USE - Environmentally-friendly composite modified emulsified asphalt used for road surface application. ADVANTAGE - The environmentally-friendly composite modified emulsified asphalt has excellent cracking resistance, high temperature resistance and rutting deformation resistance. The photo-catalytic reaction in the composite modified asphalt has the function of purifying tail gas under the action of sunlight. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of environmentally-friendly composite modified emulsified asphalt, involves taking tetrabutyl titanate, ammonium nitrate or urea and mixing in absolute ethyl alcohol solution to obtain a liquid (A), mixing cobalt nitrate and nano graphene micro-sheet in absolute ethyl alcohol solution to obtain a solution (B), mixing solution (A) and solution (B) in dropwise manner, adjusting pH value of mixture to 4.5-5.5, carrying out sol-gel treatment, drying and grinding mixture into nano powder to obtain powder (C), mixing acrylic powder with cationic styrene-butadiene latex and thickener to obtain modifier, adding modifier and stabilizer into emulsified asphalt, and mixing.