A kind of high-viscosity high-elasticity modified pitch and its preparation and application

The present invention provides a kind of high-viscosity high-elasticity modified pitch, is made up of the raw material of following parts by weight：100 parts of matrix pitch, 6.5~9.5 parts of SBS graft copolymers, 0.5~2 part of tackifying resin, 0.1~0.35 part of antioxidant, 0.2~1.5 part of vulcanizing agent, 0.1~1.0 part of compatilizer rubber oil.The present invention also proposes the preparation method and application of the high-viscosity high-elasticity modified pitch.High-viscosity high-elasticity modified pitch provided by the invention has good high-temperature stability, low-temperature cracking-resistance and ageing-resistant performance, expensive import high-viscosity modified asphalt can be replaced under conditions of Pavement Condition is not influenceed, construction costs is reduced, is widely portable in the making on domestic high-performance road surface.