EXPERIMENTAL STUDY ON THE BEHAVIOUR OF CONCRETE INFILED LIGHT GAUGE STEEL BEAMS

Naveen R K, Valsaipe T

Abstract: The flexural behaviour of thin walled steel beams with normal concrete of grade M30 and light weight epoxy polystyrene concrete as infill are investigated by making an experimental study supported by analytical predictions. Totally 12 specimens are tested. Six beams infilled with normal concrete and six beams infilled with light weight concrete in each beam of two different cross section dimensions and for each cross section with three different thicknesses the beams are fabricated. The beams tested up to failure by simply supporting the beams having effective span of 1800mm under two point loading. From the study, it is found that strength to weight ratios of sections increases with increase in thickness of steel and the moment carrying capacity of the beam increases as the grade of the infilled concrete increases. The ductility index and rotation capacity are observed to be higher in composite sections infilled with light weight epoxy polystyrene concrete.

Keywords: Cold Formed Steel, Epoxy Polystyrene Concrete, Flexural Behaviour, Infilled Beams, Light Weight Concrete.

DOI: https://doi.org/10.15623/ijret.2016.0532030