publication . Thesis . 2007

Recommendations for Longitudinal Post-Tensioning in Full-Depth Precast Concrete Bridge Deck Panels

Bowers, Susan Elizabeth;
Open Access
  • Published: 08 May 2007
  • Publisher: Virginia Tech
  • Country: United States
Full-depth precast concrete panels offer an efficient alternative to traditional cast-in-place concrete for replacement or new construction of bridge decks. Research has shown that longitudinal post-tensioning helps keep the precast bridge deck in compression and avoid problems such as leaking, cracking, spalling, and subsequent rusting on the beams at the transverse panel joints. Current design recommendations suggest levels of initial compression for precast concrete decks in a very limited number of bridge configurations. The time-dependent effects of creep and shrinkage in concrete and relaxation of prestressing steel complicate bridge behavior, making the e...
free text keywords: Prestress Losses, Precast Panels, Age-Adjusted Effective Modulus, Longitudinal Post-Tensioning
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Thesis . 2007
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