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A team of engineers from the Royal Melbourne Institute of Technology (RMIT) University in Australia have managed to replace 100% of conventional aggregates in concrete – such as gravel and crushed rock – with rubber from discarded tires that meets building codes, promising a boost for the circular economy.

Rubber from end-of-life tires acts like sunscreen for roads and halves the rate of sun damage when mixed with bitumen, new research by RMIT University and Tyre Stewardship Australia (TSA) has found. RMIT University engineers collaborated with Tyre Stewardship Australia to discover the perfect blend that is both UV-resistant and withstands traffic loads, with the potential to save governments millions on road maintenance annually.

Tyre Stewardship Australia (TSA) – an end-of-life tire management organization promoting sustainable recycling and reuse practices – invites to attend a Tech Talk on Crumb Rubber in Asphalt, which is to be help at RMIT University in Melbourne on July 7, 2022.

Researchers at the RMIT University in Australia have developed a new technology to manufacture concrete made from recycled rubber materials that is stronger and more durable than the traditional product. Recycled concrete aggregates made with ground tyre rubber and everything from coffee cups to building rubble offer huge environmental benefits, from reducing landfill and CO2 emissions, to saving natural resources and boosting the circular economy. Now researchers from RMIT have developed a new method for casting prefabricated concrete products made with rubber tyres and construction and demolition waste that are up to 35% stronger than traditional concrete. Professor Yufei Wu from the School of Engineering led the development of the Rubberized Concrete Processing Technology (RCP-Tech) and said it offered an efficient and inexpensive solution.

Tyre Stewardship Australia reports that it partners with RMIT University on a ground-breaking research project evaluating the performance of crumb rubber in asphalt made from end-of-life car tyres. The project, co-funded by TSA, RMIT University and the Victorian Department of Transport (DoT, Australia), will evaluate to what extent and in what proportion – when mixed with truck tyres, for instance – passenger car tyres can be recycled in road asphalt pavements.