Experimental Behavior of Recycled Aggregate Concrete Filled Steel Tubular Columns

During the modernization or rehabilitation activity, the demolished structural waste causes large soil pollution and unavailability of natural aggregate is the big concern for the construction industry.Therefore, this manuscript deals with the Composite Steel Circular Column(CSCC) with Recycled Aggregate concrete(RAC) as infill is partly used, with the replacement of 25% and 50% in M30 grade of Concrete. And internal reinforcement steel is fully replaced by rolled steel tubes(circular and square) with varied thickness,ISA-unequal angle. Around 14 specimens are cast and examined under axial load for analysis of the deflection characteristics, the load-bearing capacity along with its buckling behavior. The experimental values are estimated through LVDT(linear variable differential transducer) at 3-phase. The curve of load-deflection is drawn with the load pattern. From the date interpretation, it is found column made of 50%-RAC has more than 25%-RAC.