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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effects of Friction and Slip-Back on Stresses in Post-Tensioning Tendons
Author(s): J.F. Stanton
Publication: Special Publication
Appears on pages(s): 145-160
Keywords: anchorage set; friction; post-tension; prestress loss
Abstract:In post-tensioned systems, friction during stressing and slip-back due tosetting the wedge anchors cause loss of prestress. If the tendon is long or containssharp curvatures, these losses can be significant. This paper summarizes methods forcalculating the losses and provides an evaluation of the numerical coefficientssuggested by ACI 318-05 for friction. Equations are provided where closed formmethods are possible, and numerical methods are outlined for other cases.
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