FIELD: construction.
SUBSTANCE: invention relates to the field of road construction and can be used for the production of asphalt concrete mixture used as structural layers of road pavement. In the method of increasing the strength properties of road bitumen, consisting in adding a reinforcing component to bitumen, iron oxide is used as a reinforcing component, which is injected in preheated to 140–160 °C bitumen in an amount that provides its 25 % content in relation to the selected mass of bitumen, mixed thoroughly with the subsequent addition of the obtained concentrate to the remaining amount of bitumen and finally mix to obtain bitumen containing 1–2 % of iron red lead by weight of the bitumen.
EFFECT: higher strength.
1 cl, 2 dwg, 1 tbl
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