The Asia Miner

JUL-SEP 2019

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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Page 25 of 59

the asia miner • volume 16 • issue 3 24 WASTE TO ENERGY million cubic tonnes of globally documented waste from the coal and steel industries to good use. While a small amount is currently used in construcঞon, much of it is currently stored on site. UNSW Sydney researchers will monitor the road performance for up to five years. Professor Stephen Foster, Head of School of Civil and Environmental Engineering, is the CRCLCL project lead and describes the trial as a huge step forward. "This trial will help drive step change in the industry. Many concrete companies are already doing a lot to change, but this trial really gives it another push," Professor Foster said. "Research into Geopolymer has been undertaken since the 90s, but it's only now that it's starঞng to be commercialised. "While we'll monitor the road performance for up to five years, a lot of the data collected in the first three to 12 months of this world-first trial will be used to confirm our models and strengthen our predicঞons. "Concrete contributes seven per cent of all greenhouse gas emissions and in 2018, the world produced about 4.1 billion tonnes of cement, which contributed about 3.5 billion tonnes of CO 2 . "Alternaঞve, low CO 2 concrete materials offer potenঞal benefits in reducing the greenhouse gas emissions associated with convenঞonal concrete. "This trial is important because we need demonstraঞon projects to accurately assess the performance of Geopolymer over ঞme so that there can be broader uptake." Industry partner Craig Heidrich, execuঞve director, Australian (Iron and Steel) Associaঞon and Ash Development Associaঞon, says the benefits of the trial will be far-reaching. "Our collaboraঞon with organisaঞons such as the City of Sydney and the publicaঞon of the research findings will further de-mysঞfy and promote the use of Geopolymer concrete in construcঞon. "Geopolymer concrete has great engineering properঞes. It is a durable, high performance product that has a low carbon footprint when used in construcঞon," Mr Heidrich said. "It's a fundamental tenet in business that you need to be constantly innovaঞng and invesঞng into new technologies. This trial will provide real examples of Geopolymer concrete use that we can all use." According to Dr Tommy Wiedmann, Associate Professor of Sustainability Research at UNSW, if all concrete was produced in one year was Geopolymer instead of tradiঞonal concrete, this would save 12,000 kiloton CO 2 per year. Wyndham St geopolymer trial

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