Asphalt composition containing hydrogenated conjugated diene copolymer

An asphalt composition comprising from 0.5 to 50 parts by weight of a hydrogenated conjugated diene copolymer (a) and 100 parts by weight of asphalt (b), wherein the hydrogenated conjugated diene copolymer (a) is obtained by hydrogenation of a non-hydrogenated conjugated diene copolymer obtained by anion living polymerization of a conjugated diene monomer and a vinyl aromatic monomer using an organic alkali metal compound as a catalyst, and wherein the hydrogenated conjugated diene copolymer (a) comprises a polymer block (A) comprising vinyl aromatic monomer units and at least one hydrogenated copolymer block (B) obtained by hydrogenation of a non-hydrogenated random copolymer block comprising conjugated diene monomer units and vinyl aromatic monomer units, wherein the weight ratio of the conjugated diene monomer units/the vinyl aromatic monomer units is from 53/47 to 80/20, and a styrene chain constituting the polymer block (A) and the at least one hydrogenated copolymer block (B) is atactic, the hydrogenated conjugated diene copolymer (a) having the following characteristics (1) to (5):

• (1) the content of the vinyl aromatic monomer units is more than 30% and not more than 60% by weight per weight of the hydrogenated conjugated diene copolymer;
• (2) the content of the polymer block (A) is from 5% to 50% by weight per weight of the hydrogenated copolymer;
• (3) the weight average molecular weight is from 30,000 to 500,000;
• (4) the percentage of hydrogenation of the double bonds in the conjugated diene monomer units is from 60% to 100%;
• and
• (5) at least one peak of the loss tangent (tan d) is present in the range of from 40° C. to less than 10° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer.