Steel concrete composite beams
Steel concrete composite beams consists of a steel beam over which a reinforced concrete slab is cast with shear connectors. In conventional composite construction, concrete slabs are simply
rested over steel beams and supported by them. These two components act independently under the action of loads, because there are no connection between the concrete slabs and steel beam.
When a shear connector is provided between concrete slab and steel beams the slip between them is eliminated and steel beam and concrete slab act as a composite beam. The behaviour of a composite beam is just like a Tee beam.
The basic concept of composite beam lies in the fact that the concrete is stronger in compression than steel (which is susceptible to buckling under compression) and steel is stronger in tension. By using the composite action of these two, the advantages of both materials are utilized to the fullest.