Abstract

AbstractTo study the fatigue performance of a reinforced-concrete (RC) beam strengthened with textile-reinforced concrete (TRC), a four-point bending fatigue test was conducted, in which the strengthening forms, reinforcement ratio, textile ratio, static load damage, and sustained load corrosion were considered. The results of this test show that TRC can modify the fatigue failure mode and significantly improve the fatigue life of RC beams. The strengthened beams exhibited better performance than the unstrengthened beams with regard to controlling cracks. TRC can increase the number of cracks and decrease the crack width in RC beams, and the strengthened beams exhibit an increase in midspan deflection that rapidly progresses, while the unstrengthened beams do not exhibit this progression. In terms of improving the fatigue life of beams, the single-sided strengthening form is shown to perform better than the three-sided form, and a beam with a high reinforcement ratio is superior to that with a low ratio. ...

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