Fatigue of CFRPs externally bonded to concrete

Title: Fatigue of CFRPs externally bonded to concrete
Author(s): E. Ferrier, D. Bigaud, P. Hamelin, L. Bizindavyi, K. W. Neale
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 38
Issue: 275
Issue date: 2005-01-01
Publication year: 2005
Pages: 39 - 46
Total Pages: 8
Nb references: 19
Language: English

Abstract: 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.

Online publication: 2004-12-23
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/14041