What is it about?
This study explains how fire reduces the hidden prestressing force in concrete bridge girders and how engineers can measure this damage to decide whether the girder should be repaired, strengthened, or replaced.
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Why is it important?
This work is important because fire can reduce the hidden prestressing force in bridge girders, even when visible damage is limited. Measuring this loss helps engineers judge the remaining safety of the girder and make clearer decisions about repair, strengthening, or replacement.
Perspectives
This study points to a more reliable way to assess fire-damaged prestressed concrete bridge girders. Instead of relying only on visible damage or surface tests, future inspections should include direct verification of remaining tendon force. This can help engineers detect hidden prestress loss and make safer decisions about repair, strengthening, or replacement.
Van Minh Nguyen
Read the Original
This page is a summary of: Structural response of fire-damaged prestressed concrete girders with quantified prestress loss: Laboratory testing and Crossbow-based field assessment, Construction and Building Materials, July 2026, Elsevier,
DOI: 10.1016/j.conbuildmat.2026.146739.
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