RMIT University’s coffee concrete innovators have won an award at Universities Australia’s Shaping Australia Awards in the Problem Solver category, after tallying the most votes from the public.
Dr Rajeev Roychand, Professor Jie Li, Associate Professor Shannon Kilmartin-Lynch, Dr Mohammad Saberian, Professor Guomin (Kevin) Zhang and Professor Chun Qing Li’s innovation strengthens concrete by 30 per cent using biochar made from spent coffee grounds to give the drink-additive a ‘double shot’ at life and reduce waste going to landfill.
The coffee biochar can replace a portion of the sand that is used to make concrete.
Dr Roychand and Prof Li received the Problem Solver 2024 People’s Choice Winner award on behalf of the team at Parliament House in Canberra on 25 February 2025.
This invention addresses major sustainability challenges. Australia generates around 75,000 tonnes of ground coffee waste annually, contributing to 6.87 million tonnes of organic waste in landfills, which account for 3 per cent of the nation’s greenhouse gas emissions.
Dr Roychand, the lead inventor of the coffee concrete, said the team was thrilled to win the award.
“Winning this national award is outstanding recognition of our vision to transform waste materials into valuable construction resources,” he says.
“What began as research into coffee grounds has now evolved into a comprehensive program converting various types of organic waste into biochar that could help reshape the environmental footprint of the built environment.”
Within a year, the team progressed from the lab to real-world applications with industry and government partners, including a world-first footpath trial in Gisborne and is also being used in Victoria’s Big Build projects.
Dr Saberian said their innovation came at a crucial time with global sand demand projected to rise by 45 per cent over the next four decades.
“We’re not only addressing waste management but also helping preserve this increasingly scarce natural resource that is vital for construction worldwide,” he says.
Following the success of the research, the team has expanded its collaboration with industry leaders both locally and internationally.
Through these partnerships, the team’s research continues to expand its global impact, demonstrating how innovative waste-to-resource solutions can be integrated into mainstream infrastructure and construction practices worldwide.
