RMIT Researchers Develop Low-Carbon Concrete to Revolutionize Construction Industry

A groundbreaking innovation from RMIT University has emerged with the development of a low-carbon concrete that promises to revolutionize the construction industry. This eco-friendly concrete has the potential to double the recycling of coal ash, cut cement usage by half, and maintain exceptional, long-term performance standards.

Dr. Chamila Gunasekara, the lead on the project, along with a team of researchers, embarked on this journey in 2016 to address sustainability concerns in construction. The team’s goal was to implement eco-friendly practices through the creation of a low-carbon concrete that could significantly reduce environmental impact.

The project entailed collaboration with esteemed researchers such as Dr. Yuguo Yu, Professor Sujeeva Setunge, Dr. Dilan Robert, and Dr. David Law, alongside partnerships with industry players like AGL Loy Yang Power Station and the Ash Development Association of Australia. Contributions from Hokkaido University also played a crucial role in the research and development process.

Coal ash, a byproduct of coal combustion harnessed for its pozzolanic properties, found a new purpose in this innovative concrete. Cement production, known for its significant carbon emissions, underwent a transformation with the team’s demonstration of substituting up to 80% of cement in concrete with coal fly ash, far surpassing typical replacement percentages.

The next phase for the RMIT team involves rigorous testing to ensure compliance with industry standards and relevant specifications. Commercialization of this low-carbon concrete is on the horizon, with collaborations in progress with ready-mix concrete companies and local councils across Australia.