Gammon Construction Team Uses Low-Carbon Concrete in Hong Kong

Why It Matters

The emission reduction demonstrates a scalable pathway for embodied‑carbon cuts in high‑rise construction, helping Hong Kong meet its climate targets and setting a benchmark for the global building sector.

Key Takeaways

• CarbonCure technology injects captured CO₂ into fresh concrete.
• Mix replaces up to 7% cement with blast‑furnace slag.
• Project cuts concrete‑related emissions by 34% versus traditional mix.
• Tomorrow’s Central also uses 100% green rebar and sustainable timber.

Pulse Analysis

Low‑carbon concrete is rapidly moving from pilot projects to mainstream construction, driven by innovations that lock carbon into building materials. CarbonCure’s mineralisation process captures industrial CO₂ and injects it during mixing, where it reacts to form stable carbonates. By pairing this with a high‑volume slag replacement—about 40% of the binder—the mix slashes cement demand, the most carbon‑intensive component of concrete. The result is a material that retains structural performance while delivering a 34% emissions reduction, a figure that resonates with developers seeking to meet increasingly stringent ESG criteria.

In Hong Kong, Gammon Construction and developer Hongkong Land have leveraged this technology for the Tomorrow’s Central overhaul of the Landmark retail precinct. After an 18‑month testing regime, the Buildings Department granted approval in September 2025, marking one of the region’s first regulatory green lights for CO₂‑mineralised concrete. The project also integrates 100% green rebar and sustainably sourced timber, creating a holistic low‑carbon building envelope. By cutting cement use by up to 7% without sacrificing strength, the initiative directly tackles the city’s embodied‑carbon challenge, aligning with the government’s goal to reduce construction‑related emissions by 40% by 2030.

The successful rollout signals a broader shift in the construction industry toward carbon‑negative materials. As building codes evolve and carbon pricing mechanisms gain traction, developers worldwide will look to replicate Hong Kong’s model to achieve cost‑effective sustainability. CarbonCure’s platform, already active in North America and Europe, gains credibility through this high‑visibility Asian deployment, potentially accelerating adoption across dense urban markets. For investors and contractors, the technology offers a tangible route to meet ESG mandates while preserving project timelines and budgets, positioning low‑carbon concrete as a cornerstone of future‑ready infrastructure.