Engineering Properties of EVA-Modified Bitumen Binder for Paving Mixes

Abstract

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