%J Materials
%L scholars11505
%O cited By 3
%N 13
%R 10.3390/ma12132093
%D 2019
%K Bridges; Copper clad steel; Dynamic loads; Fiber reinforced materials; Metal coatings; Office buildings; Reinforced plastics; Steel fibers; Strain energy; Vanadium steel, Fiber-reinforced concretes; Industrial buildings; Poly (vinyl alcohol) (PVA); Post-tensioned beams; Posttensioning; PVA fiber; Shear reinforcement; Structural collapse, Reinforced concrete
%X This paper presents the results of the behavior of end zone of post-tensioned (PT) beams made of fiber reinforced concrete (FRC). The principal aim of using FRC was to enhance the ductility and post-cracking behavior of end-zone of post-tensioned beams. A stronger and tougher end-zone of PT-beams is necessary when it is subjected to dynamic loading. Post-tensioned (PT) beams are typically used for the construction of bridges and industrial buildings, which are often subjected to vibrations and cyclic loading. Pre-mature cracking of the end zone (EZ) of a PT-beam is considered the type of problem that may cause the structural collapse. In this research program, polyvinyl alcohol (PVA) and copper-coated steel (CCS) fibers were used in concrete for improving the EZ performance of PT-beams. The use of FRC caused a 50 reduction in the shear reinforcement within the end zone of the PT-beam, which also avoided the congestion of steel in the end zone. Hence, the concrete was placed homogeneously, and smooth finished surfaces of the beams were obtained. FRC controlled the bursting of the end zone during the transfer of the full pre-stress force, and approximately 25 increment in the strain energy of the end zone was observed, which was also found efficient in strain diminution along the length of the beam. © 2019 by the authors.
%A A. Jalal
%A N. Shafiq
%A M. Zahid
%I MDPI AG
%V 12
%T Investigating the effects of fiber reinforced concrete on the performance of end-zone of pre-stressed beams