Publication detail

Influence of Test Configuration on Bond Strength of GFRP Bars

JANUŠ, O. GIRGLE, F. KOSTIHA, V. ŠTĚPÁNEK, P. ŠULÁK, P.

Original Title

Influence of Test Configuration on Bond Strength of GFRP Bars

English Title

Influence of Test Configuration on Bond Strength of GFRP Bars

Type

conference paper

Language

en

Original Abstract

It is well-known that test configuration affects bond behaviour of steel reinforcement, but this effect has not yet been sufficiently quantified when using FRP reinforcement. This paper presents partial results from an ongoing experimental programme that deals with the bond strength of GFRP bars with concrete, with regards to the effect of the surface treatment of the rebars and test configuration. A modified beam test is presented in this study along with a pull-out test with an eccentric bar placement. The bond strength of GFRP reinforcement with sand-coated treatment using silica sand and ribbed type with milled ribs was tested. The sand-coated bars exhibit different bond behaviour compared to the ribbed ones due to different forces transfer from the reinforcement to the concrete. Thickness of the concrete cover layer also has a significant effect on the bond behaviour of the reinforcement.

English abstract

It is well-known that test configuration affects bond behaviour of steel reinforcement, but this effect has not yet been sufficiently quantified when using FRP reinforcement. This paper presents partial results from an ongoing experimental programme that deals with the bond strength of GFRP bars with concrete, with regards to the effect of the surface treatment of the rebars and test configuration. A modified beam test is presented in this study along with a pull-out test with an eccentric bar placement. The bond strength of GFRP reinforcement with sand-coated treatment using silica sand and ribbed type with milled ribs was tested. The sand-coated bars exhibit different bond behaviour compared to the ribbed ones due to different forces transfer from the reinforcement to the concrete. Thickness of the concrete cover layer also has a significant effect on the bond behaviour of the reinforcement.

Keywords

FRP; bond; composite reinforcement; pull-out; beam test

Released

19.06.2019

Publisher

Trans Tech Publications Ltd

Location

Switzerland

ISBN

978-3-0357-1459-3

Book

Solid State Phenomena: 25th Concrete Days 2018

Edition number

292

Pages from

217

Pages to

223

Pages count

7

URL

BibTex


@inproceedings{BUT158021,
  author="Ondřej {Januš} and František {Girgle} and Vojtěch {Kostiha} and Petr {Štěpánek} and Pavel {Šulák}",
  title="Influence of Test Configuration on Bond Strength of GFRP Bars",
  annote="It is well-known that test configuration affects bond behaviour of steel reinforcement, but this effect has not yet been sufficiently quantified when using FRP reinforcement. This paper presents partial results from an ongoing experimental programme that deals with the bond strength of GFRP bars with concrete, with regards to the effect of the surface treatment of the rebars and test configuration. A modified beam test is presented in this study along with a pull-out test with an eccentric bar placement. The bond strength of GFRP reinforcement with sand-coated treatment using silica sand and ribbed type with milled ribs was tested. The sand-coated bars exhibit different bond behaviour compared to the ribbed ones due to different forces transfer from the reinforcement to the concrete. Thickness of the concrete cover layer also has a significant effect on the bond behaviour of the reinforcement.",
  address="Trans Tech Publications Ltd",
  booktitle="Solid State Phenomena: 25th Concrete Days 2018",
  chapter="158021",
  doi="10.4028/www.scientific.net/SSP.292.217",
  howpublished="online",
  institution="Trans Tech Publications Ltd",
  year="2019",
  month="june",
  pages="217--223",
  publisher="Trans Tech Publications Ltd",
  type="conference paper"
}