Testing Protocol for Bonded CFRP Durability

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Title: Testing Protocol for Bonded CFRP Durability

Author(s): H. R. Hamilton, C. W. Dolan, J. E. Tanner, and E. P. Douglas

Publication: Special Publication

Volume: 275

Issue:

Appears on pages(s): 1-20

Keywords: CFRP, bond, reinforcement, concrete, testing, durability, moisture.

Date: 3/1/2011

Abstract:
This paper presents a test methodology that can be used to evaluate the durability of bonded CFRP systems used to repair and strengthen concrete beams. The test specimen is a 100 x 100 x 350 mm (4 in. x 4 in. x 14 in.) beam, tested in three-point bending (flexure) on a 300 mm (12 in.) span length. Two conditioning protocols are proposed depending on the anticipated exposure. For unprotected service conditions specimens are submerged in 60C (140F) water for 60 days. For protected service conditions, the specimens are exposed to 100% relative humidity at 60C (140F) for 60 days. Although the test method will not give a direct service life prediction, the testing presented in this paper indicate that the procedures were capable of differentiating a wide range of responses of deterioration of CFRP systems subjected to the test procedures.