Structural Performance of CFRP-Strengthened RC Slabs in a Corrosive Environment

Hussein, Mohamed; Fawzy, Tarek M.

doi:10.1061/(asce)cc.1943-5614.0000133

Cited by 11 publications

(2 citation statements)

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“…A number of research studies have investigated strengthening deteriorated reinforced concrete (RC) members with CFRP (e.g., [16]). Some studies have addressed the loss of cross-sectional area of reinforcing rebars (e.g., [17][18][19]).…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Corroded Reinforced SCC-RAP Members with CFRP

Abdel-Mohti

Shen

2016

Fibers

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Corrosion is one of the major problems affecting the durability of reinforced concrete (RC) structures. This paper investigates the effect of rebar corrosion on the performance of reinforced self-consolidating concrete (SCC) members and the effectiveness of repair. A control RC member, which has no corrosion problem, was prepared to compare against corroded and repaired members. A number of reinforced concrete members having up to 50% corrosion level were constructed and tested to study the effect of corrosion on the structural performance of RC members. The beams with corrosion problem were repaired using carbon fiber reinforced polymer (CFRP) sheets and U-wraps. All of the beams constructed, which are either not repaired or repaired, in this study were tested under two static line loads until failure. The effect of corrosion and effectiveness of repairing technique were assessed by evaluating the performance in terms of load carrying capacity, deflection, and ductility. Test results revealed that as the corrosion level increases, the loss in load carrying capacity increases. Repairing using CFRP improved the performance of corroded members. For example, when 50% corrosion level was achieved, the beam lost approximately 57% of its load carrying capacity, but when it was repaired, it recovered about 42% of its load carrying capacity.

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Section: Introductionmentioning

confidence: 99%

Strengthening of Corroded Reinforced SCC-RAP Members with CFRP

Abdel-Mohti

Shen

2016

Fibers

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“…Carbon fiber-reinforced polymers (CFRP) are lightweight, high-strength, and excellent corrosion resistance materials that have been used as an alternative material to strengthen structures and serve as barrier elements to carbon dioxide, chloride, and moisture ingress that promotes corrosion reactions in harsh marine environments [3,4]. Several researchers have investigated the behavior of concrete members encased with CFRP sheets that were subjected to harsh environmental conditions such as temperature variations [5,6], wet-dry cycles [7][8][9], freezing and thawing cycles [10][11][12][13], temperature extremes [14][15][16], and high chloride concentrations [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Activity on CFRP-Strengthened RC Piles of High-Pile Wharf in a Simulated Marine Environment

Zhuang

Zhou

et al. 2017

Advances in Materials Science and Engineering

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We report test results from an experimental study to investigate the effectiveness of carbon fiber-reinforced polymer (CFRP) against reinforcing steel bar corrosion. Twelve reinforced-concrete pile specimens of 180 mm square by 1,600 mm long were cast. Three pile specimens were corroded to 5% steel mass loss and then strengthened with CFRP sheets; four specimens were strengthened by using CFRP sheets, whereas the remaining five specimens were not strengthened. The specimens were placed in a simulated marine environment, and corrosion was induced by an impressed current technique. At different theoretical corrosion degrees, nondestructive tests were performed to investigate the corrosion activity of the pile specimens, and destructive tests were performed to determine reinforcing steel bar mass loss. Based on the findings, the effectiveness of the CFRP-strengthened RC piles under aggressive marine environmental conditions was established.

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