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Seismic Behaviour of Concrete Filled Steel Tubular (CFST) Beam Column Joints

S Sankar and A Karthik
Department of Civil Engineering,, Nandha Engineering College, Erode, Tamil Nadu, India

Abstract—Concrete Filled Steel Tubular (CFST) members utilize the advantages of both steel and concrete.They comprise of a steel hollow section of circular or rectangular shape filled with plain or reinforced concrete. Steel members have the advantages of high tensile strength and ductility,while concrete members have the advantages of high compressive strength and stiffness.Composite members combine steel and concrete, resulting in a member that has the beneficial qualities of both materials. In this paper, an attempt was made with steel tubular beams column joint filled with different types of concrete using M-Sand and Recycled Course aggregate. The effects of steel tubes, compressive strength of concrete and the confinement of concrete are examined. Specimens were tested with strength of concrete as 20 MPa. The mechanical properties for various replacements of sand by M-Sand and course aggregate by Recycled Coarse Aggregate were studied. The different concrete mixes used were 40%, 50%, 100%. The cylinders were casted and tested for 28 days for all replacements and modulus of elasticity was calculated.

Keywords: CFST, M-sand, Recycled coarse aggregate, Compressive strength
Cite: S Sankar and A Karthik, "Seismic Behaviour of Concrete Filled Steel Tubular (CFST) Beam Column Joints," International Journal of Structural and Civil Engineering Research, vol. 3, no. 4, pp. 164-169, 2014.