| 摘要 |
<p>The bituminous mixtures for roads consist in a granular composition basically containing hard rock aggregate and a binder composed of very hard bitumens and possible additives and used in an amount corresponding to a corrected richness modulus within the range of 3.8 to 4.5 in accordance with the relation: binder content where .SIGMA. = conventional specific surface-area of the aggregate =0.25G + 2.3 S + 12s + 135f,in ,2/kg with the proportions by weight G of the particles larger than 6 mm S of the particles ranging from 6 to 0.315 mm s of the particles ranging from 0.315 to 0.09 mm f of the particles smaller than 0.08mm K=corrected richness modulus .alpha. = corrective coefficient intended to take into account the mass per unit volume of the aggregate, .alpha. being equal to 2.65/mass per unit volume of the aggregate. Application to roads.</p> |
