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<doi>/ISEC.res.2017.215</doi>
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<article-title>STRENGTHENING OF RC BEAMS SUBJECTED TO<br/>
CYCLIC LOAD USING ULTRA HIGH-<br/>
PERFORMANCE STRAIN HARDENING<br/>
CEMENTITIOUS COMPOSITES</article-title>
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<author>ABD EL-HAKIM KHALIL, EMAD ETMAN, AHMED ATTA, and MOHAMED ESSAM</author>

<aff>Structural Engineering Dept, Tanta University, Tanta, Egypt</aff>

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<abstract>
<title>ABSTRACT</title>
<p>Ultra High-Performance Strain Hardening Cementitious Composites (UHP-SHCC) is a
composite material comprising a cement-based matrix and short fibers with outstanding
mechanical and protective performance having advantages as large strain capacity as
well as high compressive and tensile strength, which is useful for strengthening or
repair concrete members. In the present study, five specimens were tested
experimentally, one as a control and four strengthened with 40 mm thickness of UHP-SHCC layer attached from tension side with variable reinforcement ratios embedded in
strengthening layer. Cyclic loading was applied to all specimens. The test results
showed the importance of reinforcing the UHP-SHCC to eliminate the observed early
strain localization and to gain adequate dissipated energy under cyclic loading. It is
also proved that using an unreinforced UHP-SHCC layer for strengthening may lead to
a brittle failure especially in case of cyclic load.</p>
<p><italic>Keywords: </italic>Dissipated energy, Reinforced concrete, Structural engineering.</p>
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