| abstract |
The invention relates to a bituminous composition comprising a bituminous component and a modifier, a block copolymer made up of at least one conjugated diene block and at least one aromatic monovinyl hydrocarbon block, a composition in which the block copolymer has a vinyl content of at least 25% by weight, and the diblock copolymer content is at most 25% and has an apparent molecular weight in the range of 100,000 to 170000. The composition possesses improved physicochemical properties at both high and low temperature properties is maintained over time, providing a long service life. |