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IJSTR >> Volume 4 - Issue 11, November 2015 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Comparative Analysis Of The Tensile Strength Of Bamboo And Reinforcement Steel Bars As Structural Member In Building Construction

[Full Text]



Ogunbiyi, Moses A., Olawale, Simon O., Tudjegbe, Oke E., Akinola, S. R.





Abstract: This study aims at testing and comparing the tensile strength of bamboo and steel reinforcement bars as structural material for building construction. Tensile strength tests were carried out on various sizes steel and bamboo; categories of reinforcement bars such as; 10mm, 12mm, 16mm, 20mm and 25mm of both high-yield and mild-yield steel reinforcement bars were both tested along with same sizes of bamboo with 10mm cross-sectional thickness. Results are presented in tables and graphs and show that the tensile strength of high-yield steel bars outstrips that of mild-yield and bamboo respectively. The study finds that the breaking force (FB) for 10mm (HY) = 24.42KN; tensile strength = 457.13N/mm2; yield stress = 379.02 N/mm2 and breaking elongation = 39.67mm respectively. For 12mm (HY), breaking force (FB) = 52.14 KN; tensile strength = 689.12 N/mm2; yield stress = 551.30N/mm2 and breaking elongation = 36.58mm. 16mm (HY) results in breaking force (FB) = 126.67KN; tensile strength = 771.61N/mm2; yield stress = 494.10N/mm2 and breaking elongation = 70.87mm. The same factors for 20mm yields, breaking force (FB) = 163.97KN; tensile strength = 713.40N/mm2; yield stress = 614.74N/mm2 and breaking elongation = 61.57mm. While the 25mm (HY) produces, breaking force (FB) = 306.17KN; tensile strength = 792.90N/mm2; yield stress = 678.46N/mm2 and breaking elongation = 52.36mm respectively. Mild Steel (MY) 10mm yields, breaking force (FB) = 14.76KN; tensile strength = 290.49N/mm2; yield stress = 233.17N/mm2; and breaking elongation = 78.86mm. 12mm (MY) results in breaking force = 40.35KN; tensile strength = 508.08N/mm2; yield stress = 376.17N/mm2 and breaking elongation = 84.10mm. 16mm (MY) yields, breaking force (FB) = 79.72KN; tensile strength = 508.71N/mm2; yield stress = 349.10N/mm2 and breaking elongation = 111.39mm respectively. For 20mm mild steel, breaking force (FB) = 83.04KN; tensile strength = 372.98N/mm2; yield stress = 284.64N/mm2 and breaking elongation = 47.40mm. While the 25mm (MY) steel bar results show, breaking force (FB) = 163.04KN; tensile strength = 701.74N/mm2; yield stress = 599.77N/mm2 and breaking elongation = 56.84mm. On the other hand, bamboo yields for the same size width and constant thickness of 10mm, the 10mm-25mm bamboo sizes result as; 10mm (bamboo); breaking force (FB) = -2.1KN; tensile strength = 31.55N/mm2; yield stress = 0.00N/mm2 and breaking elongation = 0.00mm. 12mm width with 10mm thickness yields, breaking force (FB) = -1.28KN; tensile strength = 31.07N/mm2; yield stress = 0.00N/mm2; and breaking elongation = 0.00mm. 16mm (bamboo), breaking force = 1.85KN; tensile strength = 68.82N/mm2; yield stress = 49.45N/mm2 and breaking elongation = 30.40mm. For the 20mm width size bamboo with same 10mm thickness, breaking force (FB) = -0.12KN; tensile strength = 62.66N/mm2; yield stress = 50.23N/mm2 and breaking elongation = 18.20mm respectively. Finally, the 25mm (bamboo) size gives, breaking force (FB) = 4.76KN; tensile strength = 94.60N/mm2; yield stress = 50.19N/mm2 and breaking elongation = 21.11mm. The study concludes that due to the minimal breaking force (FB) of bamboo, it cannot be employed as a main structural member in building and other engineering works but can be used as portioning wall, ceiling, roof and other areas of engineering construction that is not heavy load-bearing.



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