Skip to Main content Skip to Navigation
Journal articles

Experimental study of creep-damage coupling in concrete by acoustic emission technique

Abstract : In order to design reliable concrete structures, prediction of long term behaviour of concrete is important by considering a coupling between creep and damage. An experimental investigation on the fracture properties of concrete beams submitted to creep bending tests with high levels of sustained load is reported. The influence of creep on the residual capacity and the fracture energy of concrete is studied. The progression of fracture is followed by the measurement of the crack mouth opening displacement during a three-point bending test. The sustained loading seems to increase the flexural strength of concrete, probably because of the consolidation of the hardened cement paste. The acoustic emission (AE) technique is used to perform the characterization of the influence of creep on the crack development. Results give wealth information on the fracture process zone (FPZ) and the propagation of the crack. A decrease in the amplitude distribution of AE hits is observed in the post-peak region for creep specimens.The width of the FPZ also decreases in this later indicating that the material has a more brittle behaviour which may be due to the development of microcracking under creep and the prestressing of the upper zone of the beam.
Document type :
Journal articles
Complete list of metadata
Contributor : Jacqueline Saliba <>
Submitted on : Tuesday, April 27, 2021 - 5:01:37 PM
Last modification on : Thursday, April 29, 2021 - 5:50:36 PM


Files produced by the author(s)


Distributed under a Creative Commons Attribution 4.0 International License



Jacqueline Saliba, Ahmed Loukili, Frédéric Grondin, Jean-Pierre Regoin. Experimental study of creep-damage coupling in concrete by acoustic emission technique. Materials and Structures, Springer Verlag, 2012, 45 (9), pp.1389-1401. ⟨10.1617/s11527-012-9840-3⟩. ⟨hal-02444547⟩



Record views


Files downloads