Abstract
Since steel bars are susceptible to corrosion and are expensive, this research investigates the utilization of discarded punched metal straps in flexural reinforcing of concrete beams as a cost-effective and environmentally friendly alternative to steel rebars. Consequently, four normal reinforced concrete beams were cast and tested under four-point loading. One of the specimens was a control beam incorporating reinforcement of steel rebars, whereas the remaining beams were solely reinforced by punched metal straps as the primary flexural rebars. The dimensions of the beams were 100 mm in width, 200 mm in height, and 1200 mm in length. It is found that when punched metal straps of an equivalent area to the steel bars were utilized, the beams exhibit comparable flexural strength with reduced deflection compared to the control beam. Moreover, the failure mode of the beam changes to a ductile mode of failure with an increase in the number of straps. After a comparison, it was observed that employing only two metal straps in the bending region is more effective than using three bamboo sticks in reinforcing concrete beams. Finally, the deflection capacity of the beams tends to decrease owing to the difference between the elongation capacity of steel with punched metal straps.
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Abdullah, W., Sasan, S. & Latif, S. Punched Metal Straps as Replacements for Main Steel Rebars in Normal Concrete Beams. Iran J Sci Technol Trans Civ Eng 48, 669–677 (2024). https://doi.org/10.1007/s40996-023-01180-0
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DOI: https://doi.org/10.1007/s40996-023-01180-0