Experimental analysis of the durability of RC beams strengthened by FRP laminates under the penetration of chloride ions

Title: Experimental analysis of the durability of RC beams strengthened by FRP laminates under the penetration of chloride ions
Author(s): A.A. Ramezanianpour, A. Gharachorlou
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: 1077 - 1084
Total Pages: 8
Nb references: 11
Language: English

Abstract: Externally reinforced beams with FRP are often in contact with moisture and temperature cycles that reduce the expected durability of the system. This paper presents the results of an experimental study to evaluate the corrosion activity in reinforced concrete beams repaired with FRP sheets. RC beams were manufactured in the laboratory and flexurally strengthened with FRP layers. One specimen was neither strengthened nor corroded to serve as a reference.
Two specimens were corroded and not repaired. The remaining eight beams were corroded and repaired with FRP sheets in four schemes, one and two layers of GFRP and CFRP.
Moreover, high temperature was combined with group two beams to simulate thermal effect as expected in field conditions. Then, four point bending failure tests were conducted in order to evaluate the change of mechanical properties of the test beams due to chloride ion penetration. The results show that although immersion in salt water, especially when encountered with high temperature, caused considerable degradation of ultimate capacity of RC beams, FRP confined concrete beams have adequate performance under extreme conditions.

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