ABSTRACT
Tests have been carried out on fifty two specimens with a view to investigating the effect of several parameters on the resistance of concrete-filled hollow sections to push- out forces. Such parameters included the type of shear connector and its angle of inclination, number and spacing of connectors, concrete grade and age, and also cement and water content. The results provided additional information regarding the bond strength between a steel hollow section and its concrete core, and should further our understanding of the behaviour of composite structures in which the columns are made of concrete-filled steel rectangular hollow section tubes.
