2015 CSCE Annual Conference Regina - Building on our Growth Opportunities

2015 CSCE Annual Conference Regina - Building on our Growth Opportunities Conference


Title
Effect of Bar Type on the Punching Shear Behaviour of GFRP-RC Interior Slab-Column Connections

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Author(s)
Mr. Ahmed Gouda, University of Manitoba (Presenter)
Dr. Ehab El-Salakawy, University of Manitoba
Abstract

Ahmed Gouda1 and Ehab El-Salakawy2

1 Ph.D. Student, Dept. of Civil Eng., University of Manitoba, Winnipeg, MB, Canada

2 Professor and CRC, Dept. of Civil Eng., University of Manitoba, Winnipeg, MB, Canada

Abstract: This paper presents the results of an experimental program that was carried out to investigate the effect of bar type on the behaviour of GFRP-RC interior slab-column connections. A total of three full-scale isolated Interior slab-column connections were constructed and tested to failure. One slab was reinforced with conventional steel bars, one with sand-coated GFRP bars and one with ribbed-deformed GFRP bars. The slabs were square with a side length of 2800 mm and a thickness of 200 mm. The central column had a 300-mm square section and extended above and below the slabs for a length of 1000 mm. The connections were subjected to a vertical shear force, V, simultaneously with unbalanced moment, M with a constant “M/V“ratio of 0.15 m. All test specimens failed due to punching shear of the central column through the slab. The test results showed that the specimens reinforced with sand-coated and ribbed-deformed GFRP bars had 25 and 33%, respectively, lower capacity, in reference to the steel reinforced one. It was also concluded that the ribbed-deformed GFRP bars showed comparable behavior to the sand-coated counterparts in term of cracks pattern. In addition, the test results were compared to the shear provisions of the Canadian standard CSA/S806-12 and the American guideline ACI 440.1R-06.