Description
This research aims at evaluating the effects of crumb rubber and shale-oil residue on some mechanical properties of HMA mixes. Eight HMA mixes were produced, using asphalt binders compounded with different proportions of crumb rubber and shaleoil residue, in order to evaluate the effect of these two modifiers on resilient modulus and
tensile strength values. The overall results pointed out that both crumb rubber and shale-oil residue reduce resilient modulus, but oil shows a more expressive effect. Both crumb rubber and shale-oil residue reduce tensile strength with similar intensity. Response-surface analysis indicated that crumb-rubber modified binders formulated with smaller proportions of crumb rubber and shale-oil residue lead to HMA mixtures of higher tensile strength values.
