Testing of full-scale concrete bridge deck slabs reinforced with fiber-reinforced polymer (FRP) bars

K. Bouguerra, E. A. Ahmed, S. El-Gamal, B. Benmokrane

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

This paper presents an experimental study investigating the behavior of FRP-reinforced concrete bridge deck slabs under concentrated loads. A total of eight full-scale deck slabs measuring 3000-mm long by 2500-mm wide were constructed. The test parameters were: (i) slab thickness (200, 175 and 150 mm); (ii) concrete compressive strength (35-65 MPa); (iii) bottom transverse reinforcement ratio (1.2-0.35%); and (iv) type of reinforcement (GFRP, CFRP, and steel). The slabs were supported on two parallel steel girders and were tested up to failure under monotonic single concentrated load acting on the center of each slab over a contact area of 600 × 250 mm to simulate the footprint of sustained truck wheel load (87.5 kN CL-625 truck). All deck slabs failed in punching shear. The punching capacity of the tested deck slabs ranged from 1.74 to 3.52 times the factored load (Pf) specified by the Canadian Highway Bridge Design Code (CHBDC) CAN/CSA S6-06. Besides, the ACI 440.1R-06 punching strength equation greatly underestimated the capacity of the tested slabs with an average experimental-to-predicted punching capacity ratio (V exp/Vpred) of 3.17.

Original languageEnglish
Pages (from-to)3956-3965
Number of pages10
JournalConstruction and Building Materials
Volume25
Issue number10
DOIs
Publication statusPublished - Oct 10 2011

Keywords

  • Bridge deck slab
  • Concrete
  • Design
  • Fiber-reinforced polymer (FRP)
  • Punching strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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