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Bond Behavior between Bamboo and Normal-Strength Concrete: Experimental and Numerical Investigation
https://orcid.org/0000-0002-4151-9867
https://orcid.org/0000-0002-8585-8684
Bamboo has been used in various civil engineering applications for several decades, but its use as a substitute for steel in reinforced concrete is still in the nascent stage. Because the properties of bamboo differ both interspecies and intraspecies, a bamboo-reinforced concrete (BRC) member has a larger uncertainty than a steel-reinforced concrete member. Further, bamboo possesses comparatively lower bond strength than steel embedded in concrete. The bond properties have a significant impact on the behavior of BRC beams, especially the displacement response. Therefore, it is essential to characterize the bond properties between bamboo and concrete before designing a BRC beam. In this work, the bond properties are experimentally characterized first through a series of pullout tests. The average bond strength was found to be 2.41 MPa with a standard deviation of 0.4 MPa. Statistical analysis of the experimental findings suggests that the bond strength followed a lognormal distribution. Subsequently, a finite-element model for the pullout tests was developed by utilizing a surface-based cohesive interaction. Our numerical results agreed with the experimental results. By treating the bond stress as a random quantity in the numerical model, 81% of the experimental results were captured. Finally, a finite-element model of a BRC beam was developed, whose results agreed well with the experimental ones. Our experimental results and numerical models may be adopted for creating a rational design framework for BRC members.
Bond Behavior between Bamboo and Normal-Strength Concrete: Experimental and Numerical Investigation
https://orcid.org/0000-0002-4151-9867
https://orcid.org/0000-0002-8585-8684
Bamboo has been used in various civil engineering applications for several decades, but its use as a substitute for steel in reinforced concrete is still in the nascent stage. Because the properties of bamboo differ both interspecies and intraspecies, a bamboo-reinforced concrete (BRC) member has a larger uncertainty than a steel-reinforced concrete member. Further, bamboo possesses comparatively lower bond strength than steel embedded in concrete. The bond properties have a significant impact on the behavior of BRC beams, especially the displacement response. Therefore, it is essential to characterize the bond properties between bamboo and concrete before designing a BRC beam. In this work, the bond properties are experimentally characterized first through a series of pullout tests. The average bond strength was found to be 2.41 MPa with a standard deviation of 0.4 MPa. Statistical analysis of the experimental findings suggests that the bond strength followed a lognormal distribution. Subsequently, a finite-element model for the pullout tests was developed by utilizing a surface-based cohesive interaction. Our numerical results agreed with the experimental results. By treating the bond stress as a random quantity in the numerical model, 81% of the experimental results were captured. Finally, a finite-element model of a BRC beam was developed, whose results agreed well with the experimental ones. Our experimental results and numerical models may be adopted for creating a rational design framework for BRC members.
Bond Behavior between Bamboo and Normal-Strength Concrete: Experimental and Numerical Investigation
https://orcid.org/0000-0002-4151-9867
https://orcid.org/0000-0002-8585-8684
Bamboo has been used in various civil engineering applications for several decades, but its use as a substitute for steel in reinforced concrete is still in the nascent stage. Because the properties of bamboo differ both interspecies and intraspecies, a bamboo-reinforced concrete (BRC) member has a larger uncertainty than a steel-reinforced concrete member. Further, bamboo possesses comparatively lower bond strength than steel embedded in concrete. The bond properties have a significant impact on the behavior of BRC beams, especially the displacement response. Therefore, it is essential to characterize the bond properties between bamboo and concrete before designing a BRC beam. In this work, the bond properties are experimentally characterized first through a series of pullout tests. The average bond strength was found to be 2.41 MPa with a standard deviation of 0.4 MPa. Statistical analysis of the experimental findings suggests that the bond strength followed a lognormal distribution. Subsequently, a finite-element model for the pullout tests was developed by utilizing a surface-based cohesive interaction. Our numerical results agreed with the experimental results. By treating the bond stress as a random quantity in the numerical model, 81% of the experimental results were captured. Finally, a finite-element model of a BRC beam was developed, whose results agreed well with the experimental ones. Our experimental results and numerical models may be adopted for creating a rational design framework for BRC members.
Bond Behavior between Bamboo and Normal-Strength Concrete: Experimental and Numerical Investigation
Pract. Period. Struct. Des. Constr.
Mondal, Bapi (Autor:in) / Maity, Damodar (Autor:in) / Patra, Puneet Kumar (Autor:in)
01.08.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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