▎ 摘　　要

NOVELTY - A graphene modified asphalt comprises 80-100 pts. wt., preferably 90 pts. wt. petroleum asphalt, 10-12 pts. wt., preferably 11 pts. wt. graphene, 5-7 pts. wt., preferably 6 pts. wt. polyethylene glycol, 10-12 pts. wt., preferably 11 pts. wt. calcium lignosulfonate, 5-10 pts. wt., preferably 7 pts. wt. waste engine oil, and 15-30 pts. wt., preferably 22 pts. wt. hair. USE - Graphene modified asphalt used in construction of road. ADVANTAGE - The waterproof graphene modified asphalt has excellent high temperature stability, excellent low temperature stability, and high anti cracking effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene modified asphalt, which involves weighing petroleum asphalt, graphene, polyethylene glycol, calcium lignosulfonate, waste engine oil and hair according to the required ratio, placing calcium lignosulfonate and waste engine oil in a blender and stirring until completely dissolved, adding graphene to the ultrasonic dispersion until uniformly mixed to obtain asphalt modifier, heating the petroleum asphalt at 140-190 degrees C, stirring (I), adding asphalt modifier, stirring (II) at 185-200 degrees C, swelling, adding hair, shear grinding at 185-195 degrees C, reducing the temperature to 160-180 degrees C, adding polyethylene glycol, and stirring (III) and reacting at 160-180 degrees C.