A sustainability-focused construction approach is being implemented in Hong Kong as Gammon Construction, a subsidiary of Balfour Beatty, partners with Hongkong Land to deploy low-carbon concrete at the Landmark retail precinct. The initiative integrates carbon dioxide mineralisation technology developed by CarbonCure, marking a notable application of emissions-reduction techniques in a major urban redevelopment project.
The system functions by injecting captured CO₂ into freshly mixed concrete, triggering a chemical process that converts the gas into a stable mineral permanently embedded within the material. This approach is paired with a modified concrete formulation incorporating approximately 40% ground granulated blast-furnace slag, enabling a reduction in cement usage of up to 7% while maintaining structural performance. According to Gammon, this combination delivers a 34% reduction in carbon emissions compared to conventional concrete, reinforcing the viability of low-carbon concrete in large-scale commercial construction.
Regulatory approval for the use of CarbonCure’s solution was granted by Hong Kong’s Buildings Department in September 2025, following an 18-month evaluation phase. Beyond concrete innovation, the Tomorrow’s Central redevelopment project is adopting additional sustainability measures, including the use of 100% green rebar and fully sustainable timber. The three-year programme focuses on upgrading the Landmark complex through façade enhancements and interior refurbishments spanning offices and lobby areas.
Eddie Tse, Gammon Construction Group’s sustainability manager, said: “By permanently mineralising carbon within building materials and reducing cement use, lower carbon concrete represents a meaningful step forward in embodied-carbon reduction. “With this successful deployment, we look forward to extending similar innovations across the industry and collaborating with more clients to drive low-carbon construction in Hong Kong.”
