Shear behavior of geopolymer concrete beams reinforced with glass fiber-reinforced polymer bars

Maranan, G. B. and Manalo, A. C. and Benmokrane, B. and Karunasena, W. and Mendis, P. (2017) Shear behavior of geopolymer concrete beams reinforced with glass fiber-reinforced polymer bars. ACI Structural Journal, 114 (2). pp. 337-348. ISSN 0889-3241

Abstract

The shear behavior of geopolymer concrete beams reinforced with GFRP bars and stirrups was investigated. Six short beams with a shear-span-to-effective-depth ratio (a/d) of 1.8 were cast: one with no stirrups, three with different stirrup spacing, one with less reinforcement, and one with steel stirrups. In addition, a slender beam (a/d=4.7) with the same cross-sectional area were built to investigate the influence of a/d. Experimental results showed that the GFRP stirrups enhanced both the shear strength and deflection capacity of the beams by approximately 200%. The shear crack initiated at a higher load and with a finer crack width in the beam with narrower stirrups spacing. The short beam yielded higher shear strength than the slender beam with a similar transverse reinforcement ratio. The beams with GFRP stirrups yielded a shear strength and deflection capacity—including an analogous load–deflection response—similar to that of the beam with steel stirrups.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 24 Oct 2017 03:51
Last Modified: 24 Oct 2017 03:51
Uncontrolled Keywords: shear; geopolymer concrete beams; GFRP bars; GFRP stirrups; short beam
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Identification Number or DOI: doi:10.14359/51689150
URI: http://eprints.usq.edu.au/id/eprint/31107

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