Sunshine Coast trial shows OTR tire crumb rubber can support lower-emission roads
A Sunshine Coast Council road trial in Queensland has demonstrated that crumb rubber produced from off-the-road tires can be used in asphalt and bitumen applications with performance comparable to conventional tire-derived crumb rubber, while a new lifecycle assessment indicates potential greenhouse gas savings when the modified pavement achieves a longer service life. The demonstration used crumb rubber produced entirely from OTR tires sourced from local construction equipment and incorporated it into several pavement treatments across Perlan Street, Railway Parade and Spalls Road. Twelve-month performance results found that OTR crumb rubber could be substituted for conventional crumb rubber without significant changes to asphalt production or placement, while laboratory testing indicated improved resistance to aging and environmental cracking. A 2026 lifecycle assessment by the National Transport Research Organisation found that although some crumb rubber-modified pavements have higher initial embodied emissions, longer service life and reduced maintenance could lower whole-of-life greenhouse gas emissions by up to 20% under the scenarios studied.