ASPHALT-CONCRETE MIXTURE Russian patent published in 2012 - IPC C04B26/26 C08L95/00 

FIELD: construction.

SUBSTANCE: asphalt-concrete mix contains bitumen, crushed stone, natural or crushed sand and a mineral powder, such as cakes - wastes from production of nonferrous metals and chalky flour at the ratio from 1:2.3 to 1:1.5, with the total content of ferrum and aluminium oxides (Fe₂O₃+Al₂O₃) of not more than 7%, with the following ratio of components, wt %: oil bitumen - 5.2-5.7, crushed stone - 19.0-23.5, grinding siftings - 47.2-52.1, natural sand - 17.9-19.0, mineral powder - 4.7-5.7.

EFFECT: improved physical-mechanical properties of asphalt concrete based on new compositions of mixtures.

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