POLYMER-ASPHALT-CONCRETE MIXTURE Russian patent published in 2013 - IPC C04B26/26 

FIELD: chemistry.

SUBSTANCE: invention relates to road-building materials, in particular to polymer-asphalt-concrete mixture. Polymer-asphalt-concrete mixture based on bitumen, block-copolymer of styrene-butadiene-styrene type and mineral component contains plasticiser based on paraffin-naphthene hydrocarbons and surface active substance. As mineral component it contains road metal, taken in amount from 53 wt % to 65 wt %, sand, taken in amount from 18 wt % to 28 wt %, mineral powder, taken in amount from 17 wt % to 23 wt %, it contains bitumen, block-copolymer, plasticiser and surface active substance in total amount, constituting 4.4-4.7% above weight of said mineral component, which it is mixed with in heated state. Bitumen constitutes from 47.0 to 90 wt %, block-copolymer of styrene-butadiene-styrene type in amount from 2.0 to 7.0 wt %, plasticiser, based on paraffin-naphthene hydrocarbons in amount from 6.5 to 50.0 wt%, surface active substance in amount from 0.4 to 0.9 wt %.

EFFECT: durability of asphaltic concrete in regions, where air temperature of the coldest day is lower than -20°C and reaches temperatures -70°C, calculated temperature of displacement-resistance of asphaltic concrete paving reaches 70°C.

4 cl, 10 ex