Engineering properties of EVA-modified bitumen binder for paving mixes

Polymers are being increasingly used for modification of bitumen to enhance the properties of bituminous mixes. This paper reports the procedure for m odification of 80/100 penetration-grade bitumen using ethylene vinyl acetat e copolymer. Some of the basic physical properties of the bitumen and the m odified binder are presented. The mechanical properties of the mixes contai ning such binder have been studied and compared with neat bitumen. It was f ound that 5% EVA concentration in modified binder by weight is adequate in terms of the enhanced properties studied.