Nwzad abdulla
Abstract
This study examines the behavior of UPVC confined concrete stub columns under axial compression load. Repeated loading tests were carried out on specimens loaded in uniaxial compression under varying strain and stress rates. The research aims at explaining the development of elastic and plastic strains in confined concrete and its relationship to material damage and eventual failure. The experimental results permit examining the effect of the loading regime on the composite material response, evaluated in terms of strength and deformation capacity. In addition, phenomena related to material damage were also examined. This included the deformations in the transverse and longitudinal dimensions after each cycle of loading. Experimental results show considerable deformation and energy absorption capacity for the confined concrete. A good correlation was observed between the overall reduction in length of the specimens and the corresponding overall lateral expansion.
Keywords
Repeated load, Deformation capacity, Ultimate strain, Geometrical changes.
