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A novel strong and durable near-surface mounted (NSM) FRP method with cost-effective fillers

机译：一种具有成本效益填料的新型强大耐用近表面（NSM）FRP方法

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摘要

Conventional near-surface mounted (NSM) FRP methods rely on expensive and less durable epoxy-filler bond to transfer tensile force from FRP reinforcements into concrete elements, generally failing to fully develop the tensile strength of FRP reinforcements. In this paper, cost-effective and potentially more durable fillers (e.g. cement-based paste and ceramic file adhesive) combined with anchorages have been proposed to improve conventional NSM FRP methods. Experimental results demonstrate that the proposed NSM methods are able to make full use of FRP reinforcements, suggesting excellent compatibility between fillers and the proposed method. Further mechanical improvements can be achieved by evenly distributing the FRP material of one groove into multiple grooves. Moreover, the study tends to use high-viscosity cement filler for facilitating FRP installation especially on the bottom or side of concrete elements. The application of flexural reinforcement on the side of concrete elements have also been explored, aiming to deliver a much easier FRP installation. It is believed that the paper presents feasible improvements for NSM methods. Test results suggest that those improvements can achieve a stronger and potentially more durable NSM method with cost-effective fillers.
机译：传统的近表面安装（NSM）FRP方法依赖于昂贵且更耐用的环氧树脂填充键，以将来自FRP增强物的拉伸力转移到混凝土元件中，通常不能完全发育FRP增强件的拉伸强度。本文已经提出了成本效益和潜在的更耐用的填料（例如水泥基糊剂和陶瓷文件粘合剂）与锚固相结合，以改善常规的NSM FRP方法。实验结果表明，所提出的NSM方法能够充分利用FRP增强，表明填料之间具有出色的相容性和所提出的方法。通过将一个凹槽的FRP材料均匀地分配到多个凹槽，可以实现进一步的机械改进。此外，该研究倾向于使用高粘度水泥填料，以便于促进FRP安装，特别是在混凝土元件的底部或侧面。还探讨了弯曲加固在混凝土元件侧面的应用，旨在提供更轻松的FRP安装。据信本文对NSM方法提供了可行的改进。测试结果表明，这些改进可以实现具有成本效益填料的更强大和潜在的耐用NSM方法。

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  • 来源
    《Composite Structures》 |2021年第1期|112952.1-112952.12|共12页
  • 作者

    Sun Wei; Lou Tiejiong; Achintha Mithila;

  • 作者单位

    Lanzhou Univ Sch Civil Engn & Mech Key Lab Minist Educ Mech Western Disaster & Environm Lanzhou 730000 Peoples R China|Univ Southampton Sch Engn Southampton SO17 1BJ Hants England;

    Wuhan Univ Technol Hubei Key Lab Roadway Bridge & Struct Engn Wuhan 430070 Peoples R China;

    Univ Southampton Sch Engn Southampton SO17 1BJ Hants England;

  • 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

    NSM FRP methods; Epoxy filler; Cement-based paste; Anchorage; High viscosity; Multiple grooves; Full use;

    机译：NSM FRP方法;环氧填料;基于水泥的糊状;锚定;高粘度;多个凹槽;充分利用;

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