Performance Test of 100%RAP Waste Oil-Emulsified Asphalt Cold Recycled Asphalt and Mixture
Based on 100%RAP regeneration rate,waste oil was used to pre-moisten the aging asphalt,and three indexes and infrared spectrum tests were carried out on it.Meanwhile,wet and dry splitting tests,freeze-thaw tests and Marshall stability tests were carried out on the mixture to evaluate its mechanical and water stability.The test results show that the waste oil can make the aged asphalt close to the new asphalt in the three indexes,but the softening point is too low when the content is too high,and the performance of the cold recycled mixture is reduced.The infrared spectrum shows that the waste oil can reduce the polar functional indices of sulfoxide and carbonyl groups.After the waste oil pre-moistening and regeneration,the aging asphalt on RAP surface is activated initially,and the bond with emulsified asphalt is better,which can improve the strength and water stability of the mixture.The performance of emulsified asphalt recycled mixture with 10%waste oil content is poor,which is related to excessive waste oil.
万方数据
维普
