engleski

Effect of polymer modifiers on the properties of bitumen

This paper presents an investigation into the polymer-modified bitumens containing styrene- butadiene-styrene block copolymers with different structures, linear, SBS-L and radial, SBS-R, semi- crystalline copolymer ethylene- vinyl acetate, EVA and terpolymer ethylene – butylacrylate – glycidylmethacrylate, Elvaloy AM and Elvaloy 4170. The aim was to establish the influence of the polymer type and content on the properties of PMBs for engineering applications and to evaluate the effectiveness of polymer modifiers. The results indicated that the polymer modification improved bitumen rheological properties, increased critical temperature, i.e. better resistance to permanent deformation was achieved, as well as a wider temperature range in service. The degree of improvement generally increased with the polymer content, but varied with the polymer type.

polymer modifiers ; non-reactive polymers ; reactive polymers ; bitumen ; rheological properties

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