Md Shariful Islam1, Iftekhar Alam Dipta2* and H M Golam Samdani3
Abstract: Bamboo could be used as a low cost alternative to reinforcing material in concrete due to its high tensile strength along the fiber direction. However, limited research has been conducted to learn how bamboo behaves so that it can be used as a reinforcement in concrete. In the present study, four types of locally available bamboo (i.e., Barak, Jewa, Yngoon, and Nola) were tested to determine the ultimate tensile strength. Bamboo reinforcing bars were prepared using a chisel, hammer, and large size of a sharp knife to make the same diameter compared to the steel reinforcement. The ultimate tensile strength test was conducted using a 400 kN capacity universal testing machine having a loading rate of 0.20 kN/sec. The pullout test was performed to evaluate the bond shear strength of concrete cylinders reinforced with bamboo bars for 100 to 200 mm bonding depth. Also, the flexural strength of bamboo reinforced concrete beams was measured using a third-point loading test setup. In the end, these results were compared with a low-grade mild steel reinforced concrete system. Results revealed that the Barak bamboo had a good performance in the tensile strength test among all types of tested bamboo. The bamboo reinforced concrete system had 2-2.5 times lower bond strength, and around 40% lower flexural strength compared to the steel reinforced system, respectively. Overall, the current study indicates the feasibility of using bamboo bars as the lowstrength and low cost application for reinforcing materials in the less-important reinforced concrete structures.
Keywords: Bamboo bars, low cost application, tensile strength, bond shear strength, flexural strength
References
ASTM C29, (2010). Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate, West Conshohocken, PA: ASTM International.
ASTM C127, (2017). Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate, West Conshohocken, PA: ASTM International.
ASTM C187, (2016). Standard test method for amount of water required for normal consistency of hydraulic cement paste, West Conshohocken, PA: ASTM International.
ASTM C191, (2019). Standard test method for time of setting of hydraulic cement by Vicat needle, West Conshohocken, PA: ASTM International.
ASTM C136, (2020). Standard test method for sieve analysis of fine and coarse aggregates, West Conshohocken, PA: ASTM International.
ASTM C900, (2020). Standard test method for pullout strength of hardened Concrete, West Conshohocken, PA: ASTM International.
ASTM C192, (2015). Standard practice for making and curing concrete test specimens in the laboratory, West Conshohocken, PA: ASTM International.
ASTM C78, (2018). Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading), West Conshohocken, PA: ASTM International.
BDS EN 197-1: (2003). Bangladesh standard cement, Part-1: composition, specification, and conformity criteria for common cements, Dhaka, Bangladesh.
Chembi, A., & Nimityongskul, P. A. (1989). Bamboo reinforced cement water tank. Journal of Ferrocment, 19(1), 11–17.
CEIC, Bangladesh average wholesale prices: DH: bamboo, Web accessed on November 25th, 2021, https://www.ceicdata.com/en/bangladesh/average-wholesale-pricesby- manufactured-goods/average-wholesale-prices-dh-bamboo.
Ghavami, K. (1995). Ultimate load behavior of bamboo-reinforced light-weight concrete beams. Journal of Cement and Concrete Composites, 17(4), 281–288.
Ghavami, K. (2005). Bamboo as reinforcement in structural concrete elements. Journal of Cement & Concrete Composites, 27(6), 637–649.
GharPedia, Use of bamboo as reinforcement in construction, Web accessed on November 25th, 2021. https://gharpedia.com/blog/use-of-bamboo-as-reinforcement-in-concrete/
Hidalgo, O. (1995). Study of mechanical properties of bamboo and its use as concrete reinforcement: Problems and solution. Proceedings of the 5th International Bamboo Workshop and the 4th International Bamboo Congress, Bali, Indonesia, 76–90.
Islam, M. S., & Siddique, M. A. A. (2017). Behavior of low grade steel fiber reinforced concrete made with fresh and recycled brick aggregates. Advances in Civil Engineering. https://doi.org/10.1155/2017/1812363
Islam, S. (2019). Aggregate Concrete Factor (λ) for Burnt Clay Brick Aggregate Concrete. Magazine of Civil Engineering, 87(3), 46–58.
Kankam, J. A., Ben-George, M., & Perry, S. H. (1986). Bamboo-reinforced concrete twoway slabs subjected to concentrated loading. Journal of Structural Engineering, 64(4), 371–382.
Rahman, M. M., Rashid, M. H., Hossain, M .A., Hasan, M. T., & Hasan, M. K. (2011). Performance evaluation of bamboo reinforced concrete beam. International Journal of Engineering & Technology, 11(4), 142–146.
Sutnaun, S., Srisuwan, S., Jindasai, P., Cherdchim, B., Matan, N., & Kyokong, B. (2005). Macroscopic and micro-scopic gradient structures of bamboo culms. Journal of Science & Technology, 2(1), 81–97.
Vijay R. W., & Ishwar, P. S. (2019). Bamboo concrete bond strength. International Journal of Engineering and Advanced Technology, 9(1). 747–752. Sabbir, M. A, Hoq S. M. A., & Fancy, S. F. (2011).
Determination of tensile property of bamboo for using as potential reinforcement in the concrete. International Journal of Civil & Environmental Engineering, 11(05), 47–51.