Patent ID: 8912241

Claim:
A method of preparing rubber asphalt, comprising: adding hexanediol to waste tire powder in a ratio by weight of 94-96 waste tire powder to 6-4 2,5-dimethyl-2,5-hexanediol; mixing and wetting the waste tire powder with the hexanediol to obtain rubber powder modifier; placing matrix asphalt in a reaction kettle; heating the matrix asphalt to 90-170 degrees Centrigrade; adding the rubber powder modifier to the reaction kettle in a ratio by weight of 4 matrix asphalt to 1-4 rubber powder modifier under the condition that the temperature is kept at 90-170 degrees Centrigrade; agitating the added rubber powder modifier and the matrix asphalt; and heating the reaction kettle to 190-210 degrees Centrigrade to obtain rubber asphalt.