Bituminous compositions prepared from thermoplastic polyolefins and their uses

摘要

Bituminous compositions of the bitumen-polymer type, in homogenous phase, contain at least one bitumen base and are prepared from at least one polymer of the thermoplastic polyolefin type. These compositions have a thermoplastic polyolefin content of at least 1% by weight of which the crystallinity rate is greater than or equal to 30%, a melting temperature greater than or equal to 110 DEG C. and a penetrability at 25 DEG C. less than or equal to 300 tenths of a millimeter.