Experimental characterization of the bond performance of a new type of glass fibre-reinforced polymer rebar for application in concrete structures

Abstract

This paper presents experimental results obtained from direct pull-out tests of commonly used and a new type of glass fibre-reinforced polymer (GFRP) rebar. The new GFRP rebar, developed by the authors, has a surface structure composed of milled glass fibres and epoxy resin, and its appearance resembles that of ordinary steel rebar. The effects of surface type and increased amounts of milled glass fibres in each rib on bonding with concrete were investigated to characterize the bond performance of the new type of GFRP rebar. The results indicated that the new type of GFRP rebar performed better with a higher bond strength to concrete compared with other tested types of GFRP rebar. Moreover, the rib bearing resistance and energy absorption appeared to increase with increased milled glass fibre in the ribs, which dominated the overall bond behaviour.

Keywords

bond strength deformed fibre reinforced polymer rebar glass fibre reinforced polymer milled fibre pull-out test

Get full access to this article

View all access options for this article.

References

Treece

Jirsa

Bond strength of epoxy-coated reinforcing bars

ACI Mater. J., 1989, 86 (2), 167–174.

Bakis

C E

Bank

L C

Brown

V L

Cosenza

Davalos

J F

Lesko

J J

Machida

Rizkalla

S H

Triantafillou

T C

Fiber-reinforced polymer composites for construction, state-of-the-art Review

J. Compos. Constr., 2002, 6 (2), 73–87.

Vijay

P V

GangaRao

H. V.S.

Krishnaswamy

Manufacturing, durability and bond behavior of FRP bars with nanoclay. In Proceedings of the 7th International Symposium on

Fiber reinforced polymer (FRP) reinforcement for concrete structures (FRPRCS-7), Kansas City, Missouri, USA, 7–10 November 2005, pp. 77–98 (ACI SP-230).

Sim

Moon

D Y

Bond performance of deformed GFRP rebar with milled fibres to concrete. In Proceedings of the 7th International Symposium on

Fiber reinforced polymer (FRP) reinforcement for concrete structures (FRPRCS-7), Kansas City, Missouri, USA, 7–10 November 2005, pp. 1497–1514 (ACI SP-230).

Nishizaki

Meiarashi

Long-term deterioration of GFRP in water and moist Environment

J. Compos. Constr., 2002, 6 (1), 21–27.

Mufti

A A

Banthia

Benmokrane

Boulfiza

Onofrei

Bakht

Newhook

Tadros

Brett

Durability of GFRP composite rods in field structures. In Proceedings of the 7th International Symposium on

Fibre reinforced polymer (FRP) reinforcement for concrete structures (FRPRCS-7), ACI SP- 230, Kansas City, Missouri, USA, 7–10 November 2005, pp. 1361–1378.

Moon

D Y

Sim

Benmokrane

An exploratory study of GFRP rebar with ribs containing milled glass fibers

Composites Part B, 2006, submitted for publication.

Okelo

Yuan

R L

Bond strength of fiber reinforced polymer rebars in normal strength concrete

J. Compos. Constr., 2005, 9 (3), 203–213.

Achillides

Pilakoutas

Bond behavior of fiber reinforced polymer bars under direct pullout conditions

J. Compos. Constr., 2004, 8 (2), 173–181.

10.

CEB Bulletin 10.

Bond of reinforcement in concrete, 2000, pp. 322–324, CEB Task Group 2.5.

11.

Soong

Rizkalla

Raghavan

An investigation of the bonding at the concrete polymer composite interface. In Proceedings of the Society for the Advancement of Material and Process Engineering (SAMPE), Long Beach, California, 2001.

12.

Soong

W H

Bonding between the concrete and fiber reinforced plastic (FRP) rods. MSc Thesis, University of Manitoba, Canada, 2001.