Structural performance of R/C structures under mechanical and environmental action

Title: Structural performance of R/C structures under mechanical and environmental action
Author(s): Luca Giordano, Giuseppe Mancini, Francesco Tondolo
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Print-ISBN: 978-2-35158-096-7
e-ISBN: 978-2-35158-097-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 389 - 396
Total Pages: 8
Nb references: 6
Language: English

Abstract: Rebar corrosion in concrete is the most important degrading phenomenon involving a growing number of structures. In addition, in some structures such as bridge decks, significant stress variation due to traffic actions is present. In order to investigate the coupled effects of the two phenomena, an experimental campaign on reinforced concrete elements subjected to simultaneous loading and corrosion have been established. The cycling action is chosen in order to simulate in terms of stress peak and stress variation the effect of the passage of vehicles under fatigue design situations. The environmental action is simulated by means of corrosion induced with an electrochemical procedure. Furthermore, static tests were conducted in order to have a comprehensive analysis of the effects of the deterioration processes. Transversal crack openings, due to loading and longitudinal corrosion cracks evolution are monitored. Results highlight the differences in terms of corroded and uncorroded specimens, static and cycling test and also different loading amplitude. Finally it can be observed as the growing of the damage is significantly different when a cycling action, combined with a chemical attack, is present.

Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00