CEMENT AND ASPHALT-CONCRETE MIXTURE PREPARATION METHOD AND ITS COMPOSITION Russian patent published in 2011 - IPC E01C7/18 

FIELD: construction.

SUBSTANCE: in preparation method of cement and asphalt-concrete mixture as mineral material there used is crushed stone and sand, and mixing is performed in two stages: at the first stage there separately prepared is "black" crushed stone and cement-sand solution; at that, "black" crushed stone is prepared by mixing the crushed stone with bitumen emulsion, and cement-sand solution is prepared by mixing the sand, portland cement and water; and at the second stage there mixed is prepared "black" crushed stone with cement-sand solution, and mixture is obtained at the following component ratio, wt %: crushed stone 40-72, sand 26-58, Portland cement 2-14, bitumen emulsion (more than 100%) 1-5, water-cement ratio (excluding water present in bitumen emulsion) 0.2-0.5. Composition of cement and asphalt-concrete mixture is described.

EFFECT: reducing the quantity of complex binding agent at improving physical and mechanical properties of the obtained material; improving water resistance and long-term water resistance, resistance to alternate freezing and melting; increasing modulus of deformation and strength.

3 cl, 1 dwg, 4 tbl