The Research Centre for Resources Engineering towards Carbon Neutrality (RCRE) was established in October 2021 at The Hong Kong Polytechnic University (PolyU). RCRE aspires to establish PolyU as a forefront global research centre in solid waste recycling issues to help reduce carbon dioxide emissions for achieving carbon neutrality. The research directions range from waste management policy evaluation, life cycle environmental and cost assessments, and development of recycling technologies that turn wastes into value-added resources.
RCRE has developed a range of advanced green technologies that help reduce carbon emissions in construction. The recent developed CO2-driven superhydrophobic carbon-sink foam concrete (SCFC) revolutionises the capture and use of carbon in construction. By incorporating ultra-stable CO2 foam – 50 times more stable than commercial alternatives – into a high-strength, low-carbon paste, SCFC achieves exceptional performance. The material captures over 100 kg of CO2 per cubic metre through internal carbonation, creating a rough microstructure that enables superhydrophobicity, or water resistance. SCFC offers more than three times the strength of traditional foam concrete, along with superior durability, self-cleaning capabilities, thermal insulation and soundproofing properties. SCFC addresses critical environmental challenges by reducing carbon emissions while providing energy-efficient, sustainable solutions for modern green buildings. This innovation won a Gold Medal with Congratulations of the Jury at the 50th International Exhibition of Inventions Geneva in April 2025.