Title:
Durability of CFRP Sheet Reinforcement through Exposure Tests
Author(s):
I. Nishizaki, P. Labossiere, and B. Sarsaniuc
Publication:
Symposium Paper
Volume:
230
Issue:
Appears on pages(s):
1419-1428
Keywords:
CFRP; concrete; durability; exposure test; rehabilitation;reinforcement; sheet
DOI:
10.14359/14901
Date:
10/1/2005
Abstract:
Over the last few years, the use of composite materials has become anincreasingly popular method of repairing and strengthening ageing civil engineeringstructures. However, despite the efficiency and attractiveness of this technique, itsmarket progression has been impaired by the relative lack of knowledge on the long-term behavior of the FRP materials themselves and, by extension, on the behavior ofthe structures strengthened with such products. The authors are conducting a 10-yearexposure test program on FRP products, and this paper provides midway results fromthe first 5 years of exposure data. There was no significant change in the tensilestrength of the CFRP laminates after a 5-year exposure, however in-plane shearstrength showed a slight decrease. Bending strength of matrix resin also decreased inthe early exposure stage. The results suggest a reduction of the bonding propertiesbetween carbon fibers and resin.