"The purpose of this investigation is to study the effect of surface roughness on the bond between Carbon Fiber Reinforced Polymer (CFRP) sheets and concrete. The experimental investigation was conducted in order to determine the effects of various methods of surface preparation to produce varying levels of surface roughness, and concrete strength. The specimens used in the study were unreinforced concrete beams and prisms that were externally reinforced with CFRP sheets after varying surface preparation was completed. The specimens were then tested using either a flexural or direct shear method. Strain gages were used to monitor the strain at different locations on the CFRP sheet. This information allowed the plotting of strain distribution curves for different load levels. Once the trial experiment was completed, additional specimens were fabricated to target different roughness levels and provide supplemental data to aid in verifying the trends observed.
Failure mode for all specimens in this study was a peeling of the CFRP sheet. It was found that surface roughness did have an effect on the ultimate capacity, and bond effectiveness, but due to the high variability in the data, no definitive conclusions were made. The concrete strength did affect the bond, but the database was limited, as stated previously. It was concluded that more experimental evidence is needed to provide a complete answer to the bond issue. Suggestions were also made for future research in order to build on the current study"--Abstract, page iii.
Maerz, Norbert H.
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
University of Missouri--Rolla
x, 94 pages
© 2004 Jason Michael Jeffries, All rights reserved.
Thesis - Restricted Access
Concrete -- Testing
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b5124415~S5
Jeffries, Jason Michael, "Bond behavior of fiber reinforced polymer laminates to concrete subjected to varied surface preparation" (2004). Masters Theses. 2498.
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