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首页> 外文期刊>Construction and Building Materials >Flexural strengthening of reinforcement concrete beams using high performance fiber reinforcement cement-based composite (HPFRCC) and carbon fiber reinforced polymers (CFRP)
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Flexural strengthening of reinforcement concrete beams using high performance fiber reinforcement cement-based composite (HPFRCC) and carbon fiber reinforced polymers (CFRP)

机译：使用高性能纤维增强水泥基复合材料（HPFRCC）和碳纤维增强聚合物（CFRP）进行钢筋混凝土梁的抗弯加固

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摘要

This paper presents a strengthening method using a combination of high performance fiber reinforced cement-based composite (HPFRCC) and carbon fiber reinforced polymers (CFRP). For evaluating the performance of this approach, reinforced concrete (RC) beams strengthened with CFRP sheets have been tested to failure. In order to better control the cracking of concrete and prevent/delay the debonding of the CFRP sheets, a high performance material based on HPFRCC with specially designed microfibers has been mixed to be applied in a transition layer. As a result, a material with pseudo strain-hardening behavior, high strength and fracture toughness has been obtained. The application of the CFRP in the transition layer surface constituted by HPFRCC significantly improved the performance of the tested specimens. Results show that this technique may provide a safer alternative for the flexure strengthening of RC beams.
机译：本文提出了一种结合了高性能纤维增强水泥基复合材料（HPFRCC）和碳纤维增强聚合物（CFRP）的加固方法。为了评估这种方法的性能，已经对用CFRP片加固的钢筋混凝土（RC）梁进行了测试，以验证其是否失效。为了更好地控制混凝土的开裂并防止/延缓CFRP片材的剥离，已将基于HPFRCC的高性能材料与特殊设计的微纤维混合在一起，用于过渡层。结果，获得了具有伪应变硬化行为，高强度和断裂韧性的材料。 CFRP在由HPFRCC构成的过渡层表面上的应用显着改善了测试样品的性能。结果表明，该技术可以为钢筋混凝土梁的抗弯加固提供更安全的选择。

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