AECOM is pioneering the use of next-generation construction materials to improve sustainability and performance. Recent initiatives include the implementation of precast Steel Fiber Reinforced Concrete (SFRC) tunnel segmental lining, S960 ultra-high strength steel and S690 high strength steel — each contributing to greater efficiency, durability and carbon reduction. These materials have been successfully applied in infrastructure projects across Hong Kong, setting new benchmarks for sustainable development.
Steel Fiber Reinforced Concrete (SFRC) tunnel segmental lining
This innovative material has been successfully applied in metro systems around the world. Known for its enhanced crack resistance and corrosion protection, SFRC contributes to improved tunnel durability and a reduction in CO₂ emissions, supporting more sustainable infrastructure development.
AECOM advocated for its use in Hong Kong, successfully receiving the first-ever approval from the Buildings Department for the use of precast SFRC segment linings as permanent tunnel support in 2025. This solution is now being applied in two major highway projects in Hong Kong.
Concrete canvas and fiber-reinforced shotcrete
Concrete canvas and fiber-reinforced shotcrete are two innovative materials being explored for use in emergency slope stabilization works. Considered as surface protection solutions for landslide scars, these materials can significantly shorten construction period for works at height, lowering safety risks for workers. These forward-looking approaches enhances both efficiency and safety in challenging site conditions.
S690 high strength steel
AECOM introduced the first use of this sustainable material in the construction of two landmark arch bridges in Tseung Kwan O — the Cross Bay Link and the Promenade Southern Bridge — achieving carbon reductions of 22 percent and 18 percent, respectively, compared to conventional structural steel. The success of these projects has since encouraged wider adoption of this material in infrastructure works, contributing to more nature positive development across the region.
S960 ultra-high strength steel
Designed to reduce carbon emissions through lower steel consumption and overall structural weight, S960 supports the city’s vision for a sustainable environment via more sustainable construction practices. This material also streamlines on-site procedures, enhancing efficiency, safety and reducing environmental impact. The material has been successfully applied in two footbridges within the Northern Metropolis, showcasing its potential for broader use in future urban infrastructure projects.
