Behavior of Composite Geopolymer Reinforced Concrete Beams with Openings using an Underneath Steel Plate
DOI:
https://doi.org/10.31272/jeasd.2321Keywords:
Bending, Composites, Connectors, Geopolymer Concrete, Steel BeamAbstract
Steel-composite-reinforced geopolymer concrete beams combine the strength of steel with the sustainability of geopolymers, offering a sturdy structural solution. This approach results in a composite material with excellent crack resistance and durability. The current research focuses on the impact of steel connectors on the flexural performance of composite-reinforced geopolymer concrete beams with transverse web openings, using experimental methods. The experimental program involves casting four geopolymer beams, with one being a traditional geopolymer-reinforced concrete beam (Control). The remaining three specimens are composite reinforced geopolymer concrete beams, each featuring a bottom 3 mm steel plate with six, twelve, and eighteen connectors near each support. The beams have dimensions, with a total length of 1600mm, a height of 250mm, and a width of 180mm. The results showed that increasing the number of connectors near supports increased the resulting flexural behavior of beams from about 7% to about 45% for different characterization parameters. Such connectors increased the first crack load from 6.67% to 42.22% while the service load increased from 16.22% to 36.20%. The load carrying capacity was also increased from 12.00% to 24.80%. Finally, the mode of failure was moved from traditional tension failure to concrete crushing.
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Copyright (c) 2026 Kafi Matloob, Ali Sabah Al Amli (Author)
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