BOND SLIP CHARACTERISTIC STUDY ON COMPOSITE SLAB USING COLD FORMED PROFILED STEEL SHEETING
In the construction sector, cold formed profiled steel sheeting can be employed in place of hot rolled sections due to their excellent advantages such as quality, aesthetic appearance and savings in construction time, material and cost etc. Composite slab comprises of cold-formed profiled steel sheeting with concrete core at top portion or surface. Although it was originally conceived for use as precast slabs, it has lot of potential to be used in conventional slab also. Previous studies revealed that adequate load transfer devices in the form of embossments or other mechanical connections between sheeting and concrete are necessary to effectively utilize the composite action and improve the slab performance. The present investigation aims to develop a new composite slab by using cold formed sections and appropriate interconnection devices. Thus, these composite slabs may serve as an alternative to conventional slabs and therefore, low rise buildings can be constructed using these cold formed profile steel sheeting. The composite slab is designed to take the horizontal shearing forces. The bending action leads to vertical separation between steel and concrete. At present limited experimental studies are available on this subject both at National and International level. Hence, it is necessary to carry out a series of laboratory tests augmented with analytical/numerical studies on the composite slabs to adjudge its reserve strength under various loading conditions.