Fatigue of CFRPs externally bonded to concrete
| Autor: | P. Hamelin, David Bigaud, Emmanuel Ferrier, K. W. Neale, L. Bizindavyi |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Cyclic stress
Materials science Adhesive bonding business.industry Building and Construction Structural engineering Fibre-reinforced plastic Durability Flexural strength Mechanics of Materials Solid mechanics Ultimate tensile strength General Materials Science Composite material business Reinforcement Civil and Structural Engineering |
| Zdroj: | Materials and Structures. 38:39-46 |
| ISSN: | 1871-6873 1359-5997 |
| DOI: | 10.1007/bf02480573 |
| Popis: | The external bonding of fibre reinforced polymers (FRPs) to concrete beams is a particularly attractive rehabilitation technique for increasing or restoring the strength of existing reinforced concrete flexural members. The durability and the performance of FRP-strengthened structures subjected to cyclic loading depend directly on the fatigue behaviour of the FRP itself, as well as on that of the FRP-to-concrete interface. This paper aims at increasing the database on the fatigue behaviour of these types of reinforcement using two test set-ups developed in two distinct research laboratories. The primary purpose of this paper is to propose a methodology for the determination of the value of the allowable shear bond strength (fadh,v,u) and the tensile FRP strength (ff,u) as a function of the numbers of cycles of loading. Results from an experimental investigation on the cyclic behaviour of single-lap and double-lap CFRP-concrete joints are reported. For both types of test set-up, the cyclic bond stress-slip relations are presented and discussed. Analytical S-N relations (cyclic stress range vs. the number of cycles to failure) are proposed. |
| Databáze: | OpenAIRE |
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