Fatigue behavior of high performance concrete in compression

Title: Fatigue behavior of high performance concrete in compression
Author(s): P. Bun, B. Espion
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 772 - 776
Total Pages: 5
Nb references: 9
Language: English

Abstract: In this paper, the results of an experimental program carried out in the laboratory of civil engineering of the Université Libre de Bruxelles to evaluate the performance of plain concrete (fcm,28d = 100 ~ 110MPa) under compressive fatigue loading are reported. The fatigue specimens (10×35cm cylinders) were cyclically loaded up to 2.106 cycles between a maximal compressive stress Smax (either 40%, 50%, 60%, 70% or 80%) and a minimal compressive stress Smin (5%) of the reference compressive strength at 28 days. The axial strain and the instantaneous modulus of elasticity were continuously recorded. This leads to the discussion on the evolution of the stiffness and strain under fatigue loading for this C100/115 concrete. Finally, the fatigue life resistance of high performance concrete obtained from experimental results is compared to the latest version (December 2004) of Eurocode-2 (EC2) prediction models. It is observed experimentally that there is no significant reduction of stiffness under a fatigue maximum stress up to 50% of the reference compressive strength. Predictions models in the Eurocode seem conservative.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00