Title:
Ductility and Performance Assessment of Glass Fiber Reinforced Polymer-Reinforced Concrete Deep Beams Incorporating Cementitious Composites Reinforced with Basalt Fiber Pellets
Author(s):
Ahmed G. Bediwy and Ehab F. El-Salakawy
Publication:
Structural Journal
Volume:
118
Issue:
4
Appears on pages(s):
83-95
Keywords:
basalt fiber pellets; deep beams; ductility; glass fiber-reinforced polymer (GFRP)
DOI:
10.14359/51732646
Date:
7/1/2021
Abstract:
The purpose of this study is to assess the feasibility of using a non-metallic basalt fiber (BF) pellets to enhance the ductility of glass fiber-reinforced polymer (GFRP) reinforced concrete deep beams. In addition, the ability of BF pellets to supplant conventional web reinforcement was evaluated. To achieve the goals of this study, seven large-scale concrete deep beams reinforced with GFRP headed-end bars were constructed and tested to failure under three-point loading over a span of 1390 mm. The beams had a rectangular section of 250 x 590 mm with overall length of 2100 mm. Experimental variables included the volumetric percentage of BF pellets and transverse web reinforcement. The addition of fibers improved the post-peak behavior by increasing the ductility index by more than 50%, when compared to the counterpart control beam. The results provide support for replacing conventional web reinforcement in deep beams with a layer containing BF pellets in the tie zone.
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