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Experimental and numerical analysis of large-scale bamboo-reinforced concrete beams containing crushed sand

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Abstract

Of many fast growing grasses around the world, bamboo has been persistently investigated as a possible reinforcing element in concrete. In addition to the existing knowledge on the subject, this study has performed an experimental and numerical analysis of flexural behaviour of large-scale bamboo-reinforced concrete beams containing crushed sand. The crushed sand was used as complete replacement of natural river sand at 0 and 100%, while bamboo was substituted for steel reinforcement bars at 50 and 100%. Other concrete ingredients cement, granite, and mixing water were kept constant. Curing of hardened beams was by immersion in water for 28, 56, and 84 days’ regimes. Finite element/numerical modelling and analysis of beams was performed using ABAQUS software. A nonlinear model analysis with static loading was considered with a predefined 3D model. The concrete fracture pattern was smeared crack, in the mode I. The results showed that a partial (50%) or total (100%) replacement of steel with bamboo and total replacement of natural river sand with crushed sand gave somewhat similar performance in flexure as the control beams. As expected, steel-reinforced beams were better in terms of strength across all curing regimes; however, members reinforced with 50% bamboo, although with about 14% lesser strength but having minimal deformation and crack propagation, can also be a sustainable alternative for construction. Overall, the results somewhat validate the obtained experimental flexural strength of the beams.

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Acknowledgements

This research was fully supported by the VIT University, Vellore, India.

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Authors and Affiliations

  1. Department of Civil Engineering, Covenant University, Ota, Nigeria

    P. O. Awoyera

  2. Department of Civil Engineering, VIT University, Vellore, India

    S. Karthik & P. R. M. Rao

  3. SR Engineering College, Warangal, Telangana, India

    R. Gobinath

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  1. P. O. Awoyera
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  2. S. Karthik
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  3. P. R. M. Rao
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  4. R. Gobinath
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Correspondence to P. O. Awoyera.

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Awoyera, P.O., Karthik, S., Rao, P.R.M. et al. Experimental and numerical analysis of large-scale bamboo-reinforced concrete beams containing crushed sand. Innov. Infrastruct. Solut. 4, 41 (2019). https://doi.org/10.1007/s41062-019-0228-x

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