Effects of Elevated Temperature on Mechanical Properties of Steel Reinforcement Incorporating Threaded Mechanical Couplers

Jaitrong, Jongchai; Thongchom, Chanachai; Witchayangkoon, Boonsap

:: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies

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ISSN 2228-9860
eISSN 1906-9642
CODEN: ITJEA8

FEATURE PEER-REVIEWED ARTICLE

Vol.14(2)(2023)

Effects of Elevated Temperature on Mechanical Properties of Steel Reinforcement Incorporating Threaded Mechanical Couplers

Jongchai Jaitrong, Chanachai Thongchom, Boonsap Witchayangkoon (Department of Civil Engineering, Thammasat School of Engineering, Thammasat University, THAILAND).

Discipline: Civil Engineering
➤ FullText

doi: 10.14456/ITJEMAST.2023.24

Keywords: Threaded mechanical couplers; Steel couplers; Steel reinforcement; Reinforcement splices; Heating duration; Structure under fire

Abstract
This paper presents an experimental study of the effects of the temperatures on the mechanical properties of hot-rolled steel reinforcement incorporating threaded mechanical couplers which are spliced with a parallel threaded coupling system. The experiment is conducted with a hot-rolled deformed bar with a diameter of 25mm, a quality class of SD40. The temperature is set to be at room temperature 500?C, 700?C, and 900?C with a heated duration of 120 minutes. The tensile loading is applied with a displacement rate of 4mm/min until failure. However, the results of this experiment are in the terms of yield strength and tensile strength. The result clearly shows that the mechanical properties change initially for the temperature of 500�C. Yield strength and tensile strength increased as the temperature reached 500�C, while they decreased with the increasing temperature to 700 and 900�C. Moreover, the comparison of the current experiment to those previous studies is provided.
Paper ID: 14A2C
Cite this article:

Jaitrong, J., Thongchom, C., Witchayangkoon B. (2023). Effects of Elevated Temperature on Mechanical Properties of Steel Reinforcement Incorporating Threaded Mechanical Couplers. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 14(2), 14A2C, 1-10. http://TUENGR.COM/V14/14A2C.pdf DOI: 10.14456/ITJEMAST.2023.24

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