BEHAVIOUR OF CONCRETE ENCASED STEEL COMPOSITE SHORT COLUMN SUBJECTED TO UNIAXIAL STATIC LOADING

Composite structures play a major role in the design and construction of multi-storeyed buildings. It has positive prospects like, high strength, corrosion resistance, combined utilisation of both the material properties, etc. In present work, an experimental study was made on the behaviour of concrete encased I-shape steel short columns under axial compression was considered. The mineral admixture namely metakaolin (MK) was added 15% as replacement of cement for developing self compacting concrete (SCC) specimens. The experimental programme was developed with the two composite specimens namely, one composite short column specimen with conventional vibrated reinforced cement concrete (CVC) and the another composite short column specimen with reinforced self compacting concrete (SCC) with M60 grade as per ACI code. The significance of the investigation was to examine maximum compressive load of composite short column under static loading conditions by varying the high strength concrete type. The comparison of structural behaviour of CVC and SCC composite short columns was obtained. Finally the load displacement curve and stress strain curve was plotted to study and compare the behaviour of both types of short composite columns.