| 摘要 |
FIELD: construction.SUBSTANCE: pavement includes a base consisting of drain layer, crushed stone layer of soft limestone and gravel, and coarse-grained bituminous concrete layer on which bituminous concrete blanket with surface treatment layer of interlocking black crushed stone with grain size up to 10 mm is placed. Bituminous concrete blanket is comprised by mineral bitumen composition of 50 mm thickness and the following component ratio, wt %: petroleum asphalt - 10.0-11.0; clayite gravel of 20-5 mm grain size - 12.0-14.0; crushed clayite sand with 5-0.16 mm grain size - 64.5-66.5; limestone powder of grain size under 0.16 mm - the rest.EFFECT: enhanced frost and shear resistance, reduced density, heat conductivity and bitumen consumption of pavement.2 tbl, 1 dwg |
