Which risk increases when improperly torquing anchor bolts securing a pre-stressed concrete bridge section during assembly?

💡 Explanation

When anchor bolts are over-torqued, hydrogen embrittlement can occur because excessive stress accelerates hydrogen diffusion into grain boundaries weakening the bolt material eventually leading to brittle fracture. Therefore hydrogen embrittlement results, rather than creep, delamination, or resonance which require very different loading conditions.

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