Bond strength characterization of concrete filled steel tube as structural member

Studies done by the previous researchers in Concrete Filled Steel Tubes (CFST) have a significant focus on bond performance of CFST. This paper includes studies evaluation critical parameters such as interface condition, length, infilled concrete strength, and end friction cross-section dimension these members. It is found that effect length had very little impact stress it shows promising value when range 200-800 mm after that, gets shifted reduced for larger length. But this decrease affiliated with other parameters, like macro-locking, compressive strength distinctly affects mean sample regular most part increases strength. spotted coefficient 0.15 used at both column ends to provide fixity becomes clear local buckling pattern stub independent friction. In categories columns, among steel tube extraordinarily increased cross-sectional dimension.