| abstract |
The asphalt composition of the present invention is an asphalt composition containing 1 to 15% by mass of a block copolymer (a) and asphalt (c), wherein the block copolymer (a) is a specific block copolymer. A specific amount of the polymer (a-1) and the block copolymer (a-2) is contained, and the content of the vinyl aromatic monomer unit in the block copolymer (a) is 34% by mass or more and 55% by mass. %, The number average molecular weight of the block copolymer (a-1) is in the range of 20,000 to 73,000, and the number average molecular weight of the block copolymer (a-2) is The number average molecular weight of the block copolymer (a-1) is 1.5 to 5.0 times. |