Environment-friendly composite modified emulsified asphalt and preparation method thereof

The invention discloses environment-friendly composite modified emulsified asphalt and a preparation method thereof, and aims to solve the technical problem that the existing modified emulsified asphalt is insufficient in environmental protection efficiency and pavement performance. The modified asphalt is mainly prepared from emulsified asphalt, tetrabutyl titanate, nitric acid or urea, cobalt nitrate, nano graphene nanoplatelets, cationic styrene-butadiene latex, a thickener, a stabilizer and the like. The environment-friendly composite modified emulsified asphalt is good in cracking resistance, high-temperature resistance, rut deformation resistance, water stability and skid resistance when being applied to road asphalt pavements, and normal use of roads is guaranteed; under the action of sunlight, a photocatalytic reaction in the composite modified emulsified asphalt has a tail gas purification function. 本发明公开了一种环保型复合改性乳化沥青及其制备方法，旨在解决现有改性乳化沥青环保效能及路用性能不足的技术问题。其主要由乳化沥青、钛酸四丁酯、硝酸或尿素、硝酸钴、纳米石墨烯微片、阳离子丁苯胶乳、增稠剂、稳定