Study on Influence of Regenerant on Pavement Performance of Aged Asphalt
In order to explore the difference of pavement performance of aging asphalt after application of regenerant and improve the applica-tion performance of recycled asphalt,two different kinds of aging asphalt were mixed with different doses of regenerant,and the rheological and physical properties of recycled asphalt were analyzed.The results show that when 4%regenerant is added,the penetration and ductility of as-phalt reach the pre-aging level,and the softening point is at a higher level.The reduction range of compaction temperature of aged asphalt A and B is 17 and 11℃respectively,and the reduction range of mixing temperature of aged asphalt A and B is 19and 14℃respectively.The temperature sensitivity and rutting resistance of the two kinds of aged asphalt decreased after treatment with regenerant.
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