| 摘要 |
<p>The present invention provides a bitumen composition characterised in that it contains 2 to loss than 8% by weight of a styrene-butadiene-styrene block copolymer (SBS) and 0.3 to 3% by weight of a polycyclic diterpene comprising one or more carboxyl groups and having in its molecular formula 20 carbon atoms, and the remaining portion comprising bitumen. The present invention further provides a method for manufacture of a bitumen composition characterised in that 2 to 8% by weight of styrene-butadiene-styrene block copolymer (SBS) and 0.3 to 3% by weight of a polycyclic diterpene comprising one or more carboxyl groups and having in its molecular formula 20 carbon atoms, are mixed in bitumen at a temperature in the range of from 190 Lo 210°C. The present invention further provides an asphalt composition comprising the bitumen composition and aggregate and/or filler and a method for manufacturing of the asphalt composition.</p> |
