Asphalt improving material which comprising specific composition, improved asphalt mixture and its pavement method, and composition

摘要

It is an object to provide asphalt modifier, modified asphalt and modified asphalt mixture capable of preventing phase separation of asphalt from the modifier, capable of improving the toughness and tenacity of asphalt and increasing the adhesion thereof to aggregates to thereby offer improved durability, without impairing the workability or increasing the cost of production ;and a pavement method of modified asphalt as well as a composition comprising a styrenic elastomer and a (meth)acrylic resin. ;It is an asphalt modifier ;which comprises an elastomer and a (meth)acrylic resin as essential constituents, ;with the ratio of said (meth)acrylic resin being 0.01 to 1.5 parts by weight per 1.0 part by weight of said elastomer.