Flexural behaviour of concrete-filled steel hollow sections beams

Abstract

This paper presents an experimental study of normal mix, fly ash, quarry waste and low strength concrete (brick-bat lime concrete) contribution to the ultimate moment capacity of square steel hollow sections. Fifteen simply supported beam, specimens of 1200-mm long steel hollow sections filled with normal mix, fly ash, quarry waste and lowstrength concrete and identical dimensions of hollow sections were experimented. Extensive measurements of such material properties, strain and deflection were carried out. Theoretical studies of ultimate moment capacity of a beam, specimen were also calculated in this study for comparison's sake. These experimental investigation results showed that normal mix, fly ash, quarry waste and low-strength concrete enhance the moment carrying capacity of steel hollow sections. Furthermore, in these studies it can be found that normal mix, fly ash and quarry waste concrete can be used in composite construction to increase the flexural capacity of steel hollow sections.