Monotonic and cyclic compression tests on concrete confined with PET-FRP


Ispir M.

Journal of Composites for Construction, vol.19, no.1, 2015 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 1
  • Publication Date: 2015
  • Doi Number: 10.1061/(asce)cc.1943-5614.0000490
  • Journal Name: Journal of Composites for Construction
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Confinement, Compression, Cyclic, Monotonic, PET-FRP, Poisson's ratio, STRESS-STRAIN MODEL, FIBER-REINFORCED POLYMER, COMPOSITE JACKETS, BEHAVIOR, COLUMNS, STRENGTH, SHEETS, PART
  • Istanbul Technical University Affiliated: Yes

Abstract

© 2014 American Society of Civil Engineers.Given developments in the construction material industry, existing knowledge of concrete confined with fiber-reinforced polymer (FRP) must be validated for newly developed FRP-type materials. Polyethylene terephthalate (PET), which has a high ultimate tensile strain, is a relatively new type of fiber. Given the limited number of studies on PET-FRP, the goal of this study is to observe and define the mechanical behavior of PET-FRP-confined concrete specimens subjected to monotonic/cyclic compression loading. In this study, the behavior of concrete confined with PET-FRP is compared with the behavior of concrete confined with other types of FRP. The general form of the compression stress-strain relationship of PET-FRP-confined concrete consists of two parts that are connected with a transition part, which is similar to concrete confined with other FRP types. Additionally, to understand whether available models are able to predict the compressive behavior of PET-FRP-confined concrete, the predictions from four models are compared with the corresponding test results. The results indicate that the compression stress-axial strain relationship of PET-confined concrete is not predicted in a sufficient manner using the four models.