Axial Load Performance of Concrete-Filled Steel Tube Columns With Hydraulic Cement and Strengthened by Steel Bars

Authors

  • Jaksada Thumrongvut Department of Civil Engineering, Faculty of Engineering and Technology, Rajamangala University of Technology Isan
  • Pirunluck Khamphay Department of Civil Engineering, Faculty of Engineering and Technology, Rajamangala University of Technology Isan
  • Sittichai Seangatith School of Civil Engineering, Institute of Engineering, Suranaree University of Technology
  • Saksith Pantawee Department of Civil Engineering, Faculty of Engineering and Technology, Rajamangala University of Technology Isan
  • Jeerasak Supromwan Department of Civil Engineering, Faculty of Engineering and Technology, Rajamangala University of Technology Isan

Keywords:

Concrete-filled steel tube column, Hydraulic cement, Square steel tube, Steel bar, Strengthening

Abstract

The purpose of this study is to present the experimental findings on the axial load performance of concrete-filled steel tube (CFST) columns with hydraulic cement strengthened by steel bars. Six CFST columns with hydraulic cement (referenced CFST columns) and twenty-four CFST columns with hydraulic cement strengthened by steel bars comprise a total of thirty specimens. The nominal width and height of the square specimens are 150 mm and 750 mm, respectively. The primary parameters utilized in this study are the four types of steel bars (RB6, RB9, DB12, and DB16) and the two locations of the strengthening steel bar. These experimental results showed that the CFST columns with hydraulic cement strengthened with steel bars at the inner center of the steel tube (location 1) had a greater improvement in ductility efficiency than the CFST columns with hydraulic cement and strengthened with steel bars at the inside corners of the steel tube (location 2). Lastly, by comparing the performance of hydraulic cement to ordinary Portland cement (OPC) for the concrete-filled steel tube column employed in this study, it can be stated that hydraulic cement could be utilized as a replacement material for OPC.

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Published

2023-06-29

How to Cite

[1]
J. Thumrongvut, P. . Khamphay, S. . Seangatith, S. . Pantawee, and J. . Supromwan, “Axial Load Performance of Concrete-Filled Steel Tube Columns With Hydraulic Cement and Strengthened by Steel Bars”, Eng. & Technol. Horiz., vol. 40, no. 2, pp. 117–127, Jun. 2023.

Issue

Vol. 40 No. 2 (2023): April-June

Section

Research Articles

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