| abstract |
The invention relates to a composition for asphalt mixtures. The composition according to the invention consists of a mixture of a component A consisting of 15 ... 45 parts of bitumen, 2 ... 50 parts of functionalized polyols, 0.01 ... 1.5 parts of stannous and / or dibutyl octoate catalyst for the acceleration of polyol-isocyanate polycondensation, 1-10 parts of rosin esterified with pentaerythrite and / or hydrocarbon resin, 30 ... 60 parts of diatomite and / or calcium carbonate, and a B component consisting of 1 .. 30 parts aliphatic and / or aromatic isocyanate, the parts being expressed by weight. |