Research underway in Australia is examining whether crumb rubber made from end-of-life tires could play a larger role in building roads that are better suited to extreme climate conditions.

ABC News recently reported on a study led by Charles Darwin University (CDU) that is testing how tire-derived crumb rubber performs in asphalt under Northern Territory conditions. Roads in the region are exposed to intense heat, high ultraviolet radiation, and heavy wet-season rainfall, all of which can accelerate cracking, deformation, and pothole formation.

Crumb rubber asphalt has already been linked to performance advantages when properly designed and installed. These can include increased flexibility, improved resistance to cracking, and longer service life compared with conventional asphalt mixes. However, the central question CDU researchers are seeking to answer is whether these benefits are sustained over time in some of Australia’s harshest operating environments.

Field trials are expected to begin later this year, allowing researchers to monitor real-world performance rather than relying solely on laboratory testing. The results are expected to provide practical data for road owners and asset managers who are considering the use of recycled materials in infrastructure projects.

While the study is focused on the Northern Territory, the implications extend nationally. Demonstrating durability and long-term performance in demanding conditions is a key factor in building confidence among councils and transport authorities. Proven results can help overcome risk concerns and support wider adoption of recycled tire materials in road construction.

Local governments, which are responsible for approximately three-quarters of Australia’s road network, are seen as playing a critical role. Procurement decisions at the council level can directly influence demand for recycled materials, supporting tire recycling markets while reducing reliance on virgin resources and diverting waste from landfill.

As more trials move from research to application, crumb rubber asphalt is increasingly being evaluated not just as a recycling solution, but as a potential contributor to more resilient, longer-lasting road infrastructure.

To apply for funding, proceed to the application form.