International conference on construction engineering and project management (국제학술발표논문집)

  • 2024.07a
  • /
  • Pages.10-17
  • /
  • 2024
  • /
  • 2508-9048(eISSN)
Korea Institute of Construction Engineering and Management (한국건설관리학회)
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A Basic Study on Comparative Analysis of the Characteristics and Performance of Different Types of Mechanical Rebar Coupler for Sustainable Built Environment

  • Jeeyoung LIM (Department of Architectural Engineering, Kyung-Hee University) ;
  • Ayomi Dita Rarasati (Civil Engineering Department, Universitas Indonesia) ;
  • Sunkuk KIM (Department of R&D, Earth Turbine Co., Ltd.)
  • Published : 2024.07.29
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Abstract

Rebar lap splice is the most commonly used at construction sites because it does not require any additional equipment or labor's skills. Rebar lap splice has high construction costs because they require approximately 15% more rebar due to the overlap length. To solve these problems of rebar lap splice, mechanical rebar coupler was developed. Mechanical rebar coupler has a strong bonding force, helping to keep the structure safe even during earthquakes. In addition, mechanical rebar coupler is suitable for modular construction and easy to construct, so the construction period can be shortened. And mechanical rebar coupler can reduce the amount of rebar compared to other joint methods, thereby reducing CO2 emissions. Despite these advantages, the use of mechanical rebar couplers is not widespread except in some developed countries. This is because the types and characteristics of mechanical rebar couplers vary widely, making it difficult for construction engineers to choose. Existing research has only been conducted on mechanical rebar couplers in terms of structural experiments. And there is no research that classifies and analyzes the shapes of rebars. Hence, it should be analyzed the characteristics of mechanical rebar couplers in terms of construction methods for each shape. Therefore, the objective of this study is a basic study on comparative analysis of the characteristics and performance of different types of mechanical rebar coupler for sustainable built environment. The most efficient mechanical rebar coupler was derived for each construction site environment.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grants funded by the government of the Republic of Korea (MOE) [No. 2021R1C1C2094527] This work was supported by the National Research Foundation of Korea (NRF) grants funded by the government of the Republic of Korea (MOE) [No. 2022R1A2C2005276].

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