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A global trend for developing sustainable transport infrastructure by adopting various sources of recycled material is being promoted by researchers and media daily. Recycling End of Life Tyres (EOLTs) in the form of Crumb Rubber (CR) builds on decades of past tradition. Local councils in Australia welcome recycling practices and sustainability although a general lack of guidelines is commonly acknowledged for low-traffic roads. This paper evaluates the benefits of low-content crumb rubber modified bitumen (CRMB) for its application on Australian local roads, often exposed to very hot summer temperatures.

Blending conditions play a vital role in CRMB; these include temperature, mixing duration and applied shear rate or shear mixer speed. In this study, the influence of blending conditions on the physical, chemical, thermal and rheological properties of low-content CRMB is investigated. Two shear mixing rates …