Abstract. The adhesion behavior between crumb rubber (CR) modified asphalt binder and aggregate interface is more complicated due to the incorporation of crumb rubber. This paper focuses on the changes in the interfacial chemical structure and the SARA fractions transformations during the adhesion of the CR modified asphalt binder to the aggregate. A new iso-mass layered extraction process was...
Abstract: The process of recycling scrap tire crumb rubber into asphalt pavements has been under continuous improvement for decades. Start-ing as early as the 1950’s various means and methods of incorporating recycled crumb rubber in asphalt have been proposed and applied in var-ious test sections. Starting in the 1970’s patented and proprietary as-phalt rubber products were developed and...
Abstract. In recent decades, the growth of road transport systems has contributed significantly to global warming and environmental pollution. In addition, the constant increase in transport vehicles also implies the generation of a significant amount of end-of-life tires (ELTs) to be landfill disposed. In this framework, the combination of warm-mix asphalt (WMA) technology with crumb rubber...
Abstract. The use of crumb rubber as a binder modifier in spray seals and asphalt applications is a mature technology that is generally well under-stood for high crumb rubber dosages. However, recent efforts to repurpose end of life tyres must also consider other applications. The use of crumb rubber as a low dosage binder modifier for local roads in Australia has been of significant interest...
Abstract. Mechanical characteristics of asphalt binders and asphalt mixes can be improved by utilizing asphalt modifiers. Crumb Rubber Modification (CRM) of asphalt mixes has been practiced as an environmental friendly approach for improving mechanical characteristics of asphalt mixes. Crumb rubber enhances fatigue life and rutting resistance of asphalt mixes and decrease their moisture...
Abstract. Moisture-induced durability distresses are the key barriers of rubberised asphalt that impede its further application. It is of vital importance to understand the adhesion properties between rubberised binders and aggregates. This study aims to investigate the effects of rubber type, aggregate type and water presence on the interfacial adhesion and debonding properties of the...
