FIELD: construction.
SUBSTANCE: profile of asphalt concrete road surface characterised by the fact that it is made of asphalt concrete containing microballs with diameter of up to 250 mcm from aegirine oxide ceramics and cemented carbide with size not exceeding 500 mcm, in amount of each of them of up to 25% of the total mass of asphalt concrete, with its geometrical shape, having along each line of main motion of vehicle wheels a ledge of a trapezoidal profile with height above the main surface of up to 5 mm, an angle of inclination of side lines of the trapezoid to its base of less than 20° with width of the upper line of the trapezoid making three average widths of a vehicle tyre.
EFFECT: increased wear resistance.
2 dwg
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