Ultra-high-performance concrete (UHPC) is a sustainable construction material recognised for its exceptional durability and ability in providing long spans, especially in segmental precast construction. In Malaysia, the use of long-span UHPC girders has rapidly increased in bridge construction and is particularly beneficial for river crossings in that the need for piers within the waterway can be eliminated. This paper looks at quality assurance/quality control (QA/QC) data and construction methodology used for the 105 m navigation span of the Langat River Bridge. Precast-prestressed UHPC U-girders were used, with a conventional concrete deck. An overview of the on-site assembly procedures, launching techniques, and other important construction aspects is briefly presented. A sustainability assessment comparing it with a conventional steel composite design reveals that the UHPC composite bridge exhibits significantly better sustainability metrics, with less than 60% of the embodied carbon compared to an alternative steel design.
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Jhen Shen Tan, Hui Teng Ng and Yen Lei Voo, Dura Technology Sdn. Bhd, Malaysia Stephen J. Foster, Faculty of Engineering, The University of New South Wales, UNSW Sydney, Australia Balamurugan A. Gopal4, Public Work Department of Malaysia