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Fibers 2016, 4(4), 30; doi:10.3390/fib4040030

Performance of Strengthened Non-Uniformly Corroded Reinforced SCC-RAP Members

1
Civil Engineering Department, Ohio Northern University, Ada, OH 45810, USA
2
Mechanical Engineering Department, Ohio Northern University, Ada, OH 45810, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Jonathan Phillips
Received: 14 October 2016 / Revised: 2 November 2016 / Accepted: 17 November 2016 / Published: 1 December 2016

Abstract

This research examines the performance of strengthened non-uniformly corroded reinforced self-consolidating concrete (SCC) members. This paper focuses on three aspects of concrete including corrosion, concrete cover loss, and repair technique. Up to a 50% corrosion level is considered in this study. Corrosion was experimentally induced and was simulated in other cases. Twenty-six reinforced concrete (RC) members with various corrosion levels or simulated corrosion levels were constructed and investigated. The beams with corrosion problems including those that had experimentally induced corrosion or simulated corrosion, with or without concrete cover, were repaired using carbon fiber reinforced polymer (CFRP) sheets and U-wraps. Two line loads were applied to all of the non-repaired and repaired beams constructed in this study until failure. It was found that it is conservative to model the actual corrosion by simulating the equivalent area of steel reinforcing for up to a 20% level of corrosion. For corrosion levels over 20%, the simulated corrosion over predicts the load capacity of the actual corrosion cases. When the concrete cover was lost and for a corrosion level larger than 10%, the repaired beam did not reach similar performance to that of a repaired beam with a concrete cover that was still intact. It appears that using two layers of CFRP sheet did not improve the load capacity further, but rather improved the ductility of the deteriorated RC member. View Full-Text
Keywords: self-consolidating concrete (SCC); corrosion; carbon fiber reinforced polymer (CFRP); structural performance; load self-consolidating concrete (SCC); corrosion; carbon fiber reinforced polymer (CFRP); structural performance; load
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Abdel-Mohti, A.; Shen, H. Performance of Strengthened Non-Uniformly Corroded Reinforced SCC-RAP Members. Fibers 2016, 4, 30.

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