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<doi>/ISEC.res.2017.81</doi>
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<article-title>BEHAVIOR OF CORRODED RC BEAMS WITHOUT<br/>
STIRRUPS REPAIRED WITH CFRP SHEETS</article-title>
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<author>ABDULLAH AL-SAIDY, SHERIF EL-GAMAL, KHLAIFA AL-JABRI, and BILAL WARIS</author>

<aff>Dept of Civil and Architectural Engineering, Sultan Qaboos University, Muscat,<br/>
Sultanate of Oman</aff>


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<abstract>
<title>ABSTRACT</title>
<p>In reinforced concrete structures located in hot and humid areas, steel reinforcement is
generally vulnerable to deterioration due to corrosion. Corrosion of reinforcement in
many cases is considered the main cause of concrete structures deterioration, which in
turn requires large budgets for repair and maintenance. This paper presents the
experimental results of damaged/repaired reinforced concrete beams. The
experimental program consisted of testing reinforced concrete rectangular beam
specimen’s with/without shear reinforcement and exposed to accelerated corrosion of
the longitudinal steel reinforcement on the tension side. Bonding external U-shaped
CFRP sheets to restore the strength loss due to corrosion repaired corroded beams
without shear reinforcement. The test results showed that corroded beams without
stirrups failed in a brittle manner with drop in maximum deflection at failure of
approximately 60% compared to the uncorroded beam. Corroded beams with stirrups
lost some strength, but failed in ductile manner. Using externally bonded U-shaped
CFRP sheets restored the ductility of corroded beams without stirrups and prevented
bond failure at the steel concrete interface due to the absence of internal stirrups.</p>
<p><italic>Keywords: </italic>Strengthening, Rehabilitation, Composite materials, Transvers steel,
Corrosion, Repair.</p>
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