ROAD CONCRETE MIX Russian patent published in 2009 - IPC C04B26/26 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions of modified road concrete mix based on asphalt-rubber compositions and can be used in making road concrete mix, used in coating roads, aerodromes etc. The road concrete mix contains binder - asphalt rubber composition, obtained from asphalt and vulcalinised rubber crumbs from used car tyres, treated to complete dissociation of rubber particles in the composition, and mineral filler. The said vulcanised rubber crumbs has particle size of 2 to 10 mm. The composition also contains a naphthalene fraction of coal-tar resin, boiling temperature of components of which is 200°C or over, with the following ratio of components of the composition, wt %: asphalt 60 to 85, said vulcanised rubber crumbs 10 to 30, said naphthalene fraction of coal-tar resin 5 to 10. Components in the road concrete mix are in the following ratio, wt %: asphalt-rubber composition 5 to 10, mineral filler - the rest.

EFFECT: improved operational characteristics of obtained road concrete mix, recycling of shock-resistant rubber objects and wastes from their production.

1 cl, 5 ex, 1 tbl