Abstract
Porous asphalt (PA) pavement has been widely used mainly in national highways and expressways in Japan since the “Drainage Asphalt Pavement Technical Guidelines” was published in 1996. Also, more than 20 years have elapsed since PA pavement began to popularize, and the recycled aggregate due to reconstruction on PA pavement is expected to increase in the future. However, since polymer-modified bitumen with high adhesive strength is used for PA, and since aggregate gradation is largely different from dense graded asphalt (DG) mixture usually used, the recycling method of PA is considered necessary. In this study, the recycled PA pavement which was made of recycled PA mixture and DG mixture, were constructed in 2006 in National Highway No. 408 of Tsukuba City, Japan. And the results of follow-up survey on durability and serviceability for ten years of recycled PA pavement were reported.
Published Version
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