Volumetric Properties of Asphalt Mixture Containing Fly Ash Geopolymer

Abstract

Countries around the world face challenges to maintain their existing road networks with the increasing development of the transportation industry in the past few decades. In Malaysia, dense graded asphalt has been paved extensively in most of the major road network. This paper presents the volumetric properties of asphalt mixture incorporating fly ash geopolymer. SuperpaveTM mix design method was employed with the nominal maximum aggregate size 12.5 mm to obtain the optimum binder content. In the respect, binder 80/100 and 60/70 penetration grade with 0%, 3%, 5%, 7%, 9% and 11% fly ash geopolymer by weight of asphalt binder were prepared. Bulk specific gravity and maximum theoretical specific gravity were determined to meet criteria asphalt binder at 4.0 percent air voids. The results indicated that, the optimum binder content for binder grade 80/100 and 60/70 is in range 5.02% – 5.83% and 5.03% - 6.00% respectively. The outcomes of this research significantly used for further performance test and analysis on asphalt mixture.