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This paper presents a laboratory study of modified bitumen containing ethylene vinyl acetate (EVA) copolymer. A 35/50 penetration grade base (unmodified) bitumen has been mixed with EVA polymer at different proportions (3%, 5% and 7%). Therefore, this study was conducted to investigate the effects of the modifier on the rheological properties. The rheological characteristics of the EVA-modified bitumen have been analyzed using dynamic shear rheometer (DSR).
The dynamic shear rheometer test reported that added content of EVA has great effect on the rheological properties of the binder such as increased elastic responses (increased complex shear modulus and decreased phase angle) at low to high temperatures. EVA improves rutting resistance and fatigue behaviour at high temperatures and low temperatures respectively.
