ACTIVATED MINERAL POWDER FOR ROAD CONCRETE MIX AND METHOD FOR MANUFACTURING THEREOF Russian patent published in 2018 - IPC C04B26/26 C04B20/10 C04B14/26 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to the field of production of road building materials and can be used in road construction to equip high-quality road surfaces. In a method for producing an activated mineral powder for an asphalt mixture by co-grinding a mineral component in the form of a carbonate rock and a hydrophobizator with simultaneous stirring, to an even distribution of the hydrophobizator over the surface of the mineral component, preliminary prepare a hydrophobizator by adding Agidol-1 to a mixture of fatty acids of soap stocks of light vegetable oils and hydrogenated fats at a temperature of 70–80 °C with constant mixing at the rate of 0.01 % of the weight of fatty acids, a centrifugal-impact method of dry grinding is used to produce angular grains with a high surface roughness and a dynamic classification of the finished product is carried out to obtain the required grain size modulus with the following ratio of components, wt. %: hydrophobizator – 0.5–0.7, mineral component – the rest. Activated mineral powder for asphalt-concrete mixture, containing a homogeneous mixture of crushed mineral component in the form of carbonate rock and hydrophobizator, uniformly distributed over the surface of the mineral component and including a mixture of fatty acids of soap stocks of light vegetable oils and hydrogenated fats with an acid number of not less than 180 mg KOH/g and antioxidant fatty acids "Agidol-1 technical" at the rate of 0.01 % of the mass of fatty acids obtained by the above method.

EFFECT: decrease in bitumen capacity, increase in strength and decrease in oxidation processes.

2 cl, 1 ex, 2 dwg