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Trafalgar to join in pilot plastic-infused roads project to tackle waste challenge with circular-economy approachRMIT-led project demonstrates plastic-infused roads in Victoria, guided by best-practice recycling guidelines, enhancing durability and sustainability. Austroads and Victorian councils collaborate for nationwide impact. By news@gippsland - 17th August 2023 - Back to News New roads mixed with recycled plastics at ten sites across Victoria will demonstrate a viable circular-economy solution to the nation, experts say. The RMIT University-led project - supported by the Australian Research Council, Austroads and 10 Victorian councils - will incorporate recycled plastic from consumer and industrial waste, including notoriously stubborn soft plastics, into asphalt as a performance enhancer. 
Addressing plastic waste crisis: RMIT's project tackles landfill issue. Prof. Giustozzi leads, crafting plastic-in-asphalt guidelines for sustainability Sustainable plastic roadsWith Australians generating 2.6 million tonnes of plastic waste each year and landfill space expected to reach capacity by 2025, this project is helping to address an urgent challenge. Project lead, RMIT Associate Professor Filippo Giustozzi, said the team will also produce best-practice guidelines on the use of recycled plastics in asphalt roads. "These guidelines will enable local governments, which control 80% of the nation's roads, to begin wide scale adoption of this innovative recycling solution," said Giustozzi from RMIT's School of Engineering. The City of Melbourne and nine suburban and regional councils will lead the way, each having sections of recycled road up to 900 metres long paved over coming months." "The 10 project sites will use an estimated 21,000 kg of recycled plastic, but the potential scale of this solution is considerable given the several hundred thousand kilometres of roads across Australia," Giustozzi said. Recycled roads innovationGiustozzi also said, "If Australia's 537 local governments each used a small amount of recycled plastic in the many roads they resurface each year, then nationally we'll have created a large end-market for recycled plastic." Here in Baw Baw Shire, sections of Contingent Street and McCrorey Street between Princes Hwy and Kitchener Street in Trafalgar have been selected as part of the trial. "We're pleased to be part of this innovative trial project that will see sustainable asphalt mixes tested across some of council's managed roads. Projects like this are positive steps forward towards more sustainable and viable long-term road maintenance solutions for our Shire," says Mayor of Baw Baw Shire, Annemarie McCabe. Roads built on quality researchExtensive laboratory studies conducted by RMIT for Austroads - the collective of the Australian and New Zealand transport agencies - show these mixes are mechanically, chemically, and environmentally sound, he said. "The performance of roads can actually be improved with the addition of recycled material, such as plastic and rubber, to be more durable against traffic and resistant against ageing," Giustozzi said. The team's latest study, funded by Austroads and published in top journal Science of The Total Environment, found the recycled plastic asphalt mixtures had 150% less cracking and 85% less deformation under pressure testing than conventional asphalt.
H2:Enhancing plastic roads
Giustozzi said, "These studies tell us that adding specific types of plastic in the right way can generate greater rutting and fatigue resistance. In some instances, the performance of the mix was similar to some of the more expensive polymers used in roads and substantially higher than conventional asphalt mixes." The partnership with Victorian councils and Austroads will now translate these findings into applied solutions that enhance the sustainability of our roads. "This is a critical step in demonstrating the feasibility of this approach to tackling a problematic waste stream in Australia, while establishing a trusted network for plastics recycling in road applications," he said. Supporting wide scale adoptionAustroads Chief Executive, Geoff Allan, noted an increasing interest in exploring the viability of repurposing recycled waste plastic and said that Austroads was leading ground-breaking work to investigate the most suitable types of plastics for use in road construction. "This project builds on the work completed last year that confirmed that recycled plastics can be successfully incorporated in road infrastructure without detrimental effects on the environment, the health and safety of the workers, or the future recyclability of plastic-modified asphalt," Allan said. Recycled roads collaborationAllan said, "A major contribution of this project will be to develop evidence-based guidance that will provide certainty to road managers about the use of recycled plastics in road surfacing applications and thus lay the foundations for this solution to be embraced nationally." Along with Austroads, the collaboration includes Australia's leading pavement authorities and specialists, including public works and building bodies, recyclers and contractors. It will be coordinated under the ARC Industrial Transformation Research Hub for Transformation of Reclaimed Waste Resources to Engineered Materials and Solutions for a Circular Economy (TREMS). Local government areas involved in the project include the City of Melbourne, Banyule, Bayside, Moonee Valley, Hobsons Bay, Baw Baw, La Trobe, Casey, Mornington Peninsula and Wyndham. Pictures from Baw Baw Shire Council website.
Source: http://gippsland.com/ Published by: news@gippsland.com
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