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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: Local Bond-Slip Characteristics of G-FRP Bars
Author(s): S.P. Tastani, S.J. Pantazopoulou, and P. Karvounis
Publication: Special Publication
Appears on pages(s): 1481-1496
Keywords: bar diameter; bar roughness; FRP reinforcement; localbond; slip
Abstract:In this paper local bond-slip relationships of GFRP bars in normal strengthconcrete are evaluated experimentally through testing of 30 direct-tension pulloutspecimens. In all cases short anchorages are examined. A novel type of test specimenwas used in the study specially designed so as to minimize the spurious influence oftesting conditions on measured bond properties. Parameters considered in theexperimental investigation were the bar roughness and diameter, the size effectexpressed by the constant cover to bar diameter ratio and the external pressureexerted by transverse FRP jacket over the anchorage zone. Response variables used toevaluate performance were the load developed by the anchorage, the loaded-end slipand the transverse displacement occurring over the length of embedment, recorded byconventional instruments as well as through digital image processing. Results of thestudy are summarized in the form of local bond-slip curves for this type of GFRPreinforcement, whereby performance limit states are quantified in terms of slip andmobilized strength.
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