Low-carbon marine self-healing concrete for achieving carbon neutrality

The project titled “Marine self-healing concrete with biomineralization-enhanced construction waste for long-term decarbonization” led by Prof. LI Xiangdong, Director of the Research Institute for Sustainable Urban Development (RISUD), Dean of the Faculty of Construction and Environment (FCE), Chair Professor of Environmental Science and Technology, and Ko Jan Ming Professor in Sustainable Urban Development, has been awarded approximately HK$6.03 million from the Green Tech Fund for a duration of 24 months.

This project focuses on designing and developing low-carbon marine self-healing concrete by incorporating biomineralization-enhanced recycled aggregates (RAs). Marine carbon-capturing bacteria will utilise carbon dioxide (CO₂) to accelerate carbonisation and improve RAs, thereby addressing the issue of scarce natural aggregates, reducing CO₂ emissions, and achieving the recycling of construction waste. In addition, this microbial concrete structure possesses self-healing properties that enhance its durability, providing a significant advantage in achieving long-term decarbonization and sustainability objectives.