The Hong Kong Polytechnic University (PolyU) is committed to advancing green technology to tackle the pressing need for global sustainability. PolyU researchers have developed a groundbreaking project aimed at designing and developing low-carbon marine self-healing concrete, which holds promising potential for marine construction materials and coastal engineering applications. This initiative will contribute to long-term decarbonisation efforts and has received support from the Green Tech Fund.
The project titled “Marine self-healing concrete with biomineralization-enhanced construction waste for long-term decarbonization” is led by Prof. LI Xiangdong, Director of RISUD, Dean of Faculty of Construction and Environment (FCE), Chair Professor of Environmental Science and Technology, and Ko Jan Ming Professor in Sustainable Urban Development at PolyU. It has been awarded approximately HK$ 6.03 million from the Green Tech Fund for a duration of 24 months.
This project is focused 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.
Field testing and lifecycle assessments will be conducted to ensure that the new concrete meets the stringent standards of durability and marine ecosystem quality. Anticipated results include a comprehensive design guideline for marine self-healing concrete, optimised mixing techniques, and valuable insights into the influence and environmental performances on marine ecology.
In promoting the recycling of construction waste, conserving land resources, and mitigating environmental hazards, this project also drive progress in the production of marine construction materials and the subsequent development of related industries. Consequently, it contributes towards achieving carbon neutrality and fostering sustainable development within the Greater Bay Area.
The Green Tech Fund (GTF) was established in 2020 to provide better and more focused funding support to research and development projects which can help Hong Kong decarbonise and enhance environmental protection.
Online coverage:
Hong Kong Economic Times - https://polyu.me/4iMpJbR
Hong Kong Commercial Daily - https://polyu.me/3Wh2vBd
