Investigation of asphalt binder performance modified with ceramic waste powder

Abstract

The widespread use of industrially produced ceramic in multiple uses around the world has resulted in large quantities of wastes dumped in landfills. Thus, the presence of these quantities of waste materials is a source of concern for environmental pollution. For the purposes of conservation and sustainable construction, recycle and reuse of ceramic wastes are a good and new attempt in this field. This study investigated the effect of various percentages of ceramic waste powder (CWP) on the physical and rheological properties of binders. Two different penetration grades of binder 60/70 and 80/100 were used in this research, and each one was blended with three different percentages of CWP content (3%, 6%, and 9% by weight of binder), to evaluate for such related properties of the ceramic waste powder modified binder (CWPMB). Laboratory tests undertaken included penetration, softening point, viscosity, storage stability, and Dynamic Shear Rheometer (DSR). To simulate the short-term aging, Rolling Thin Film Oven Test (RTFOT) was conducted after RTFO aging, whereas the long-term aging simulated by Pressure Aging Vessel (PAV) test which is used after (PAV) aging, then, evaluated for rutting (G*/sinδ) and fatigue (G*sinδ) factors by conducting the (DSR) test. It found that the addition of CWP enhances the physical properties of the asphalt binders, due to increased viscosity, storage stability, and softening point, as well as decreasing the penetration. The results observed that the high percentages of CWP content can increase G*/sinδ before and after RTFO aging and decrease G*sinδ after PAV aging, which is leading to higher resistance to permanent deformation (rutting and fatigue) of binders. Also, as compared to the 80/100 CWPMB, the results showed that the stiffer 60/70 CWPMB was more resistant to rutting and less resistant to fatigue cracking.