FraMCoS 6 2007 Catania, Italy

Influence of thermal degradation on anchorage zones of externally-bonded reinforcement

This paper is identification of problem behaviour of anchorage of externally bonded reinforcement on concrete constructions. The tests were realized with FRP strips. The main problem was to determine the influence of thermal degradation of concrete for the load capacity…

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Year 2007
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Abstract

This paper is identification of problem behaviour of anchorage of externally bonded reinforcement on concrete constructions. The tests were realized with FRP strips. The main problem was to determine the influence of thermal degradation of concrete for the load capacity of anchorage zone. This influence was evoked by several different (0, 50, 100 and 200) cycles of freezing of concrete-FRP bond. Tests were performed both as the short-terms and long-terms ones. All tests were made for different anchorage length. The test results were compared with values obtained from analysis of anchorage zones behaviour in nonlinear FEM method. New analytical relationship was also developed to define the behaviour between strip and concrete along the anchorage zone. Finally, control calculations were carried out according two different standards (ACI and Czech standards) and compared with the previous results.