Paper Details

Hot Mix Asphalt (HMA) is a widely used material for paving purpose as these pavements are constantlysubjected to changing wheel loads and environmental factors. Combination of environmental actions and the imposedstresses from the repeated traffic loads results in moisture damage and causes reduction in pavement life due to theformation of “cracking failures”.The present study envisages to find out modification in Elvaloy modifier and to further improve the properties of asphaltmixture in terms of Fatigue Cracking. The gradation is tested using Margalla quarry aggregate and bitumen grade 60/70of Attock Oil Refinery. The binder was modified with different ratios of Elvaloy. The maximum asphalt content of thebinder has been determined using the Marshall Mix Design (MS-2) method, and then volumetric of sample has beenfigured out.Besides, performance test i.e. Indirect Tensile Fatigue Test (ITFT) was carried out on the mixes used in determination ofthe optimum asphalt content. The results showed significant increase in resistance to fatigue cracking using Elvaloy asmodifier. At the end, the results derived from ITFT were subjected to statistical analysis and it was observed thattemperature being the most significant factor, followed by gradation and Elvaloy content.

ENGR. JAWAD AFRIDI, DR. BAZID KHAN, “EVALUATION OF FATIGUE RESISTANCE USING ELVALOY MODIFIED BINDER”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 6, Issue 9, pp. 65-70, September 2019.