Effect of Nano Zeolite Modified Bitumen on Marshall Characteristics of HRS-WC Hot Mix Asphalt

Abstract

Nano materials are currently being widely used to modify asphalt. Nanomaterials have physical, chemical and biological properties that are different from their original properties, and show sensitivity to high temperatures, high ductility and large surface areas. This research aims to determine the effect of using nano zeolite modified asphalt on the marshall characteristics of HRS-WC hot mix asphalt. The nano zeolite material used in this research was synthesized from natural zeolite from Gunungkidul, Central Java. Meanwhile, the asphalt used is asphalt pen 60/70 produced by Pertamina. This asphalt was then modified by adding nano zeolite material to asphalt pen 60/70 with varying percentages of nano zeolite addition of 0.1%, 0.2% and 0.3%. The use of nano zeolite modified asphalt as a binding material in the HRS-WC hot mix asphalt can reduce the Optimum Asphalt Content (OAC) compared to the HRS-WC hot mix asphalt using asphalt pen 60/70. In addition, the use of nano zeolite modified asphalt can increase the stability, density and VFA values. Meanwhile, the VIM and VMA values decreased in the HRS-WC hot mix asphalt using nano zeolite modified asphalt. From a review of the flow and MQ values, the use of nano zeolite modified asphalt produces a mixture that has greater stiffness than the HRS-WC hot asphalt mixture using asphalt pen 60/70.