Axial strength of short concrete-filled plastic tubes

The axial compressive behavior of concrete-filled plastic tube (CFPT) with five different cement–admixture combinations were examined. A commercially available modified polycarboxylate superplasticizer used at five different concentrations. The plastic tube was an un-plasticized polyvinyl chloride (uPVC) made up of three layers: a blue layer sandwiched between two white layers to achieve solid wall construction. Test results showed that the...