| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a porous asphalt mixture capable of maintaining slip resistance of a road surface for a long period, and a construction method using the same. <P>SOLUTION: The porous asphalt mixture includes an asphalt-based binder, an aggregate, and a filler as essential components. The aggregate includes a first wear rate aggregate and a second wear rate aggregate having a higher wear rate than the first wear rate aggregate, the compounding ratio of the first wear rate aggregate and second wear rate aggregate being 1:0.5 to 1:2. The first wear rate aggregate is contained by 20% or larger in terms of weight rate to the mixture, and has such a wear rate that a BPN value after an accelerated wear test of the mixture is 40 or larger, and a decrease rate of the BPN value after the accelerated wear test to a BPN value before the accelerated wear test is 20% or less. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
