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Key Words: porous asphalt mixture, plant recycling, scarified materials, rejuvenating additive, Cantabro test
Daijirou MATSUMOTO$B!$(BKazumasa KAWAMURA$B!$(BMitsuhiko TAKAHASHI$B!$(B
Takara OKOCHI and Koji SHIRATO
In current plant recycling for porous asphalt mixture, existing porous materials with undersize of 5mm are difficult to reuse in practice. This paper presents how to deal with the problem in mix design and manufacture at plant for sustaining quality of the recycled mixture in case much use of them are used. It was found that more contents of recycled aggregates can be used by sizing them in 13-5mm and 5-0mm rather than only crushing them in 13-0mm. Moreover prevention of adhesive materials in heating dryer and adjustment of recycled mix at plant are also presented practice.