Predicting fatigue service life extension of RC bridges with externally bonded CFRP repairs.

Sobieck, Tyler; Atadero, Rebecca; Mahmoud, Hussam; Colorado State University. Dept. of Civil and Environmental Engineering

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Predicting fatigue service life extension of RC bridges with externally bonded CFRP repairs.

2015-12-01
By Sobieck, Tyler ; Atadero, Rebecca ; Mahmoud, Hussam

[PDF-3.47 MB]

English

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Creators:

Sobieck, Tyler ; Atadero, Rebecca ; Mahmoud, Hussam

Sobieck, Tyler ; Atadero, Rebecca ; Mahmoud, Hussam Less -
Corporate Creators:

Colorado State University. Dept. of Civil and Environmental Engineering
Corporate Contributors:

United States. Dept. of Transportation. Research and Innovative Technology Administration
Subject/TRT Terms:

[+]

Carbon Fibers Fatigue Cracking Fiber Reinforced Polymers Recommendations Reinforced Concrete Bridges Reinforcing Bars Repairing Service Life
Publication/ Report Number:

MPC 15-292
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Mountain Plains Consortium
Abstract:

This paper presents the results of an experimental study on the fatigue performance of RC beams

strengthened with different externally bonded CFRP systems. Seven specimens were fabricated; three had

no CFRP; the remaining four had one of two CFRP systems. The objective of this study was to determine

the effect the CFRP repair had on the growth rate of a fatigue crack initiating from a notch in the tensile

rebars. The results of the experimental study showed an extended fatigue life and a slowed crack growth

rate in specimens repaired with both CFRP systems. The crack growth rates were used to determine

material constants for the Paris Law, which describes growth of a stable fatigue crack. These results were

then used to propose recommendations for design of FRP repair systems for a specific fatigue life.
Format:

PDF
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:c1be46b3750c7aafbc15ae87ba2cd84463b99c56e56094c93fe3032245b0e207
Download URL:

https://rosap.ntl.bts.gov/view/dot/29743/dot_29743_DS1.pdf
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Predicting fatigue service life extension of RC bridges with externally bonded CFRP repairs.

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