BITUMINOUS MIXTURES FOR ROADS WITH VERY HIGH PERFORMANCES, METHOD FOR PRODUCING SAID MIXTURES AND THEIR APPLICATION ON ROADS

摘要

ABSTRACT OF THE DISCLOSUREThe bituminous mixtures for roads consist in a granularcomposition basically containing hard rock aggregate and abinder composed of very hard bitumens and possible additivesand used in an amount corresponding to a corrected richnessmodulus within the range of 3.8 to 4.5 in accordance withthe relation:binder content where.SIGMA. = conventional specific surface-area of the aggregate=0.25G + 2.3 S + 12s + 135f,in ,2/kgwith the proportions by weightG of the particles larger than 6 mmS of the particles ranging from 6 to 0.315 mms of the particles ranging from 0.315 to 0.09 mmf of the particles smaller than 0.08mmK=corrected richness modulus.alpha. = corrective coefficient intended to take intoaccount the mass per unit volume of the aggregate, .alpha. beingequal to 2.65/mass per unit volume of the aggregate.Application to roads.