Publication detail

Fatigue behaviour of FRP bars encased in concrete

JANUŠ, O. GIRGLE, F. KOSTIHA, V. ŠTĚPÁNEK, P. MANSOUR, M.

Original Title

Fatigue behaviour of FRP bars encased in concrete

English Title

Fatigue behaviour of FRP bars encased in concrete

Type

conference paper

Language

en

Original Abstract

The paper describes an experimental programme for studying the fatigue performance of internal GFRP reinforcement, as initiated by the authors. The bars were encased in concrete to allow anchoring of samples, and to provide the concrete environment. The samples were axially loaded at a frequency of 4 Hz under a constant stress ratio of 0.1. Two types of GFRP bars have been used to date: sand-coated bars with an epoxy matrix, and ribbed bars with a vinyl ester matrix. The S-N curve was created for the sand-coated bars throughout its recommended range, i.e. from roughly 1000 cycles to two million cycles. The results obtained from the tests of sand-coated bars encased in concrete are comparable with other presented studies. Thermocouples fixed at the surface of the GFRP bars allowed for the measurement of temperature during loading.

English abstract

The paper describes an experimental programme for studying the fatigue performance of internal GFRP reinforcement, as initiated by the authors. The bars were encased in concrete to allow anchoring of samples, and to provide the concrete environment. The samples were axially loaded at a frequency of 4 Hz under a constant stress ratio of 0.1. Two types of GFRP bars have been used to date: sand-coated bars with an epoxy matrix, and ribbed bars with a vinyl ester matrix. The S-N curve was created for the sand-coated bars throughout its recommended range, i.e. from roughly 1000 cycles to two million cycles. The results obtained from the tests of sand-coated bars encased in concrete are comparable with other presented studies. Thermocouples fixed at the surface of the GFRP bars allowed for the measurement of temperature during loading.

Keywords

Composite, Concrete, Cyclic, Fatigue, FRP, Reinforcement

Released

29.05.2019

Publisher

International Federation for Structural Concrete

Location

Krakow

ISBN

9782940643004

Book

Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures 2019

Pages from

1968

Pages to

1976

Pages count

9

BibTex


@inproceedings{BUT157247,
  author="Ondřej {Januš} and František {Girgle} and Vojtěch {Kostiha} and Petr {Štěpánek} and Mohamad {Mansour}",
  title="Fatigue behaviour of FRP bars encased in concrete",
  annote="The paper describes an experimental programme for studying the fatigue performance of internal GFRP reinforcement, as initiated by the authors. The bars were encased in concrete to allow anchoring of samples, and to provide the concrete environment. The samples were axially loaded at a frequency of 4 Hz under a constant stress ratio of 0.1. Two types of GFRP bars have been used to date: sand-coated bars with an epoxy matrix, and ribbed bars with a vinyl ester matrix. The S-N curve was created for the sand-coated bars throughout its recommended range, i.e. from roughly 1000 cycles to two million cycles. The results obtained from the tests of sand-coated bars encased in concrete are comparable with other presented studies. Thermocouples fixed at the surface of the GFRP bars allowed for the measurement of temperature during loading.",
  address="International Federation for Structural Concrete",
  booktitle="Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures
2019",
  chapter="157247",
  howpublished="online",
  institution="International Federation for Structural Concrete",
  year="2019",
  month="may",
  pages="1968--1976",
  publisher="International Federation for Structural Concrete",
  type="conference paper"
}