PROPERTIES OF BITUMEN MODIFIED WITH THERMOPLASTIC ELASTOMERS

摘要

The possibilities of modification of bitumens by blend thermoelastoplastics (TEPs) with predominantly maximum long main chains are studied. The evaluation of properties shows that blend TEPs display a stronger effect in low-viscous bitumens, as evidenced by convergence of the solubility parameters of TEPs and of the aliphatic part of the malthene fraction of bitumens. The relaxation properties of the modified bitumens allow us to judge their stability in service conditions, to evaluate quantitatively this effect, and to determine the activation energy of the relaxation process.