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This paper introduces an indicator, termed Concrete Structure Environmental Performance Potential (CSEPP), to evaluate the sustainability of concrete structural-level products, with a particular focus on bridge applications made using ultra-high-performance concrete (UHPC). The CSEPP is applied to two new case studies: (i) SPE Expressway Composite Bridge (UHPC U-girders versus high-strength concrete (HSC) I-girders), and (ii) RTS Railway Composite Bridge (UHPC U-girders versus high-performance normal strength concrete (HP-NSC) box girder). In the first scenario, the UHPC solution achieves reductions in embodied energy (EE), embodied carbon (EC), and 100-year global warming potential (GWP100) by 5.7%, 10.3%, and 10.2%, respectively, with an improvement of 26% CSEPP. In the second case, the UHPC design leads to respective reductions of 10.2% (EE), 11.4% (EC), and 11.5% (GWP100), with an improvement of 29% CSEPP. These results demonstrate that UHPC bridges outperform conventional concrete alternatives in terms of sustainability indicators.

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Ultra-High-Performance Concrete in Bridge Construction: A Sustainability Perspective Through Two Case Studies

  • 会议论文

  • 发表日期：

    2026年

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  • Hui-Teng Ng,
  • Yen Lei Voo,
  • Jhen Shen Tan

摘要

This paper introduces an indicator, termed Concrete Structure Environmental Performance Potential (CSEPP), to evaluate the sustainability of concrete structural-level products, with a particular focus on bridge applications made using ultra-high-performance concrete (UHPC). The CSEPP is applied to two new case studies: (i) SPE Expressway Composite Bridge (UHPC U-girders versus high-strength concrete (HSC) I-girders), and (ii) RTS Railway Composite Bridge (UHPC U-girders versus high-performance normal strength concrete (HP-NSC) box girder). In the first scenario, the UHPC solution achieves reductions in embodied energy (EE), embodied carbon (EC), and 100-year global warming potential (GWP100) by 5.7%, 10.3%, and 10.2%, respectively, with an improvement of 26% CSEPP. In the second case, the UHPC design leads to respective reductions of 10.2% (EE), 11.4% (EC), and 11.5% (GWP100), with an improvement of 29% CSEPP. These results demonstrate that UHPC bridges outperform conventional concrete alternatives in terms of sustainability indicators.