BITUMEN-MINERAL MIXTURE Russian patent published in 2012 - IPC C08L95/00 C04B20/10 C08K7/22 C08K9/04 

FIELD: chemistry.

SUBSTANCE: invention relates to road construction materials and can be used in bottoming and paving roads. The bitumen-mineral mixture contains bitumen, mineral powder and natural sand. The mixture also contains as coarse aggregate claydite gravel or tuff chips, hydrophobisated with 3-5 wt % heavy pyrolysis resin - by-product of gasoline pyrolysis when producing ethylene. Components are in the following ratio in wt %: bitumen - 5.1-6.5, mineral powder - 11.4-17.4, natural sand - 39.3-44.7, claydite gravel or tuff chips, hydrophobisated with 3-5 wt % heavy pyrolysis resin - the balance.

EFFECT: high water-resistance, strength and thermal stability of the bitumen-mineral material and low consumption of bitumen.

3 dwg, 10 ex