• Dishant Pansuriya
• V. R. Panchal
• D. R. Panchal

Composite column is very much effective in providing strength, stability and stiffness. Many of developed countries are using composite column in construction because of providing advantage of speed in construction. In this particular paper, an experimental study in which total seventy-two steel tube specimens were tested. The purpose of this study is to observe the behavior of different types of concrete filled steel tube (CFST) composite column like square, rectangular and circular having various grades of concrete M20 and M40 and varying H/D ratio of column specimens under axially compressive load. Ductility Index, Strength Index, Concrete Contribution Ratio are calculated. Also, comparison is made with steel hollow tube section.

Concrete filled steel tube, Composite column, Ductility Index, Strength Index, Concrete Contribution Ratio

"Experimental Study on Comparison of Square, Rectangular and Circular Concrete Filled Steel Tube Composite Columns", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.988-993, July-2018, Available :http://www.jetir.org/papers/JETIR1807875.pdf

"Experimental Study on Comparison of Square, Rectangular and Circular Concrete Filled Steel Tube Composite Columns", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp988-993, July-2018, Available at : http://www.jetir.org/papers/JETIR1807875.pdf