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首页> 外文期刊>Construction and Building Materials >Ductile, durable, and reliable alternative to FRP bars for reinforcing seawater sea-sand recycled concrete beams: steel/FRP composite bars
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Ductile, durable, and reliable alternative to FRP bars for reinforcing seawater sea-sand recycled concrete beams: steel/FRP composite bars

机译：用于加强海水海砂再生混凝土梁的FRP棒材的韧性，耐用，可靠的替代品：钢/ FRP复合棒

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摘要

The combination of seawater, sea-sand and recycled concrete aggregate (RCA) to make the so-called seawater sea-sand recycled concrete (SSRC) is a promising alternative to mitigate the shortage of raw construction materials, e.g. river sand, freshwater and crushed stone. Although equipped with anti-corrosion and high strength, the reduced ductility due to the linear elastic nature of conventional fiber-reinforced polymer (FRP) bars hinders their application scope in civil engineering. Inherited the advantages of FRP bars, steel fiber-reinforced polymer composite bars (SFCBs) are also characterized by good ductility and stable post-yield stiffness, which can potentially be ideal reinforcement for concrete structures made with un-desalted corrosive raw materials. This paper presents experimental and theoretical investigations on the flexural performance of SFCB reinforced SSRC beams. Test results indicate that the displacement ductility factor of almost all the SFCB reinforced SSRC beams are in a range from 3.7 to 4.9. The ratios of peak load-to-yielding load of SFCB reinforced SSRC beams varied from 1.5 to 3.1, indicating a remarkable post-yield behavior. Compared with the counterparts with natural aggregates, SSRC beams show slightly reduced flexural strength and comparable ductility. Theoretical models were proposed to predict the load-deflection responses of SFCB reinforced SSRC beams, which paves the way for the design of such members. (C) 2020 Elsevier Ltd. All rights reserved.
机译：海水，海砂和再生混凝土骨料（RCA）的组合使所谓的海水海砂再生混凝土（SSRC）是一种有前途的替代方案，可以减轻原始建筑材料的短缺。河砂，淡水和碎石。虽然配备了抗腐蚀和高强度，但由于常规纤维增强聚合物（FRP）的线性弹性性质（FRP）棒的延展性降低了阻碍了其在土木工程中的应用范围。继承了FRP棒的优点，钢纤维增强聚合物复合棒（SFCBS）还具有良好的延展性和稳定的产率刚度，这可能是用Un-Desazy腐蚀性原料制成的混凝土结构的理想增强。本文提出了对SFCB增强SSRC梁弯曲性能的实验和理论研究。测试结果表明，几乎所有SFCB增强SSRC光束的位移延展系数在3.7至4.9的范围内。 SFCB增强SSRC光束的峰值载荷荷载载量的比率从1.5到3.1变化，表明产前后的行为显着。与具有自然聚集体的对应物相比，SSRC梁显示出略微降低的抗弯强度和可比较的延展性。提出了理论模型来预测SFCB增强SSRC光束的载荷偏转响应，这为这些构件的设计铺平了道路。 （c）2020 elestvier有限公司保留所有权利。

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  • 来源
    《Construction and Building Materials》 |2021年第1期|121264.1-121264.13|共13页
  • 作者

    Zhou Yingwu; Gao Heng; Hu Zhiheng; Qiu Yadong; Guo Menghuan; Huang Xiaoxu; Hu Biao;

  • 作者单位

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

    Shenzhen Univ Guangdong Prov Key Lab Durabil Marine Civil Engn Shenzhen 518060 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Steel fiber-reinforced polymer composite bar (SFCB); Recycled aggregate; Sea-sand seawater recycled concrete (SSRC); Beam test; Modelling;

    机译：钢纤维增强聚合物复合棒（SFCB）;再生骨料;海砂海水再循环混凝土（SSRC）;梁试验;建模;
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