Push-Out Test on SCS sandwich composite members with various concrete cores and shear connectors

The development of Steel-Concrete-Steel1(SCS) sandwich composite
construction has accelerated in recent decades. SCS members have been used as
lightweight key components in buildings, bridges, and other structures in civil
engineering applications because of its features and advantages. Slippage in SCS
sandwich composite member could happen in between concrete and steel plates under
compressive loading or in a column under axial load. As a result, the composite action
could be reduced and thus decreasing the load-bearing capacity. This research is to
explore the failure modes of the SCS specimens and to study the influences of various
parameters such as concrete type and shear connector type on the interface behavior
in SCS sandwich composite column by carrying out a series of push-out tests.