Experimental Study on Ductility and Toughness of HDPE-Pipe Concrete

Ductility ratio and strain energy that are regarded as the characteristic parameters of ductility and toughness were calculated from axial stress-strain curves of plain concrete and HDPE-pipe concrete.Effect of pipe thickness and core-concrete strength on ductility and toughness of HDPE-pipe concrete was studied.The results indicate that the ductility and toughness of HDPE-pipe concrete is much be…