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Using screws to increase the bond between Iraqi bamboo and concrete in concrete beams

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Abstract

Bamboo has been studied extensively in different concrete elements from all around the world as the properties of bamboo varies from one place to another. It is evident that there is insufficient bond between bamboo and the concrete in bamboo-reinforced concrete elements. Therefore, this paper investigates drilling 30 mm screws in between the nodes of the bamboo to tackle the debonding issue. Thus, four concrete beams were cast, three of which were reinforced with screwed bamboo. The beams were (1200 mm × 200 mm × 100 mm) which are length, depth, and width, respectively. Compared to the steel-reinforced concrete beam, the load carrying capacity decreases by 80, 82, and 78% for beams reinforced with two, four and six screwed bamboos. However, the beams tend to deflect more due to the breakage of the hollow bamboo. It is also found that the screws help in developing the bond as it alters the behavior of the beam from fluctuating strength to regaining strength smoothly. Finally, contrary to what is reported when debonding occurred, no auditory perception of an intermittent acoustic stimulus characterized by brief, distinct, and repetitive auditory events was detected by the human auditory system during testing which points to an improvement in the bond between the concrete and the bamboo.

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Authors and Affiliations

  1. Civil Engineering Department, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq

    Wrya Abdullah, Lareen Dlshad & Younis Ali

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  1. Wrya Abdullah
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  2. Lareen Dlshad
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  3. Younis Ali
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Correspondence to Wrya Abdullah.

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Dear Sir/Madame: We declare that we have no significant competing financial, professional, or personal interests that might have influenced the performance or presentation of the work described in this manuscript.

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The research focuses solely on laboratory testing or material characterization of bamboo in concrete, and does not involve human participants or ethical issues.

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Abdullah, W., Dlshad, L. & Ali, Y. Using screws to increase the bond between Iraqi bamboo and concrete in concrete beams. Innov. Infrastruct. Solut. 8, 203 (2023). https://doi.org/10.1007/s41062-023-01172-z

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