Investigation of an alternative testing protocol to determine the shear strength of bamboo parallel to the grain

  • Gabrielle Luisa Cantos
  • Luis F. Lopez
  • Richard M. de Jesus
  • Corinna Salzer
  • Lessandro E. O. Garciano
Keywords: Base Bahay, Bambusa blumeana, ISO 22157, kawayang tinik, mechanical properties

Abstract

The common testing protocol to determine the shear strength of bamboo parallel to grain is ISO 22157.  However, widely documented limitations of this test procedure calls for an alternative testing protocol.  This study compared ISO 22157 (TP1) and 2 alternative testing protocols proposed by Base Bahay (TP2a and 2b) in determining shear strength of bamboo parallel to grain. The study used a local bamboo known as “kawayang tinik” (Bambusa blumeana). Results showed that TP1 produced more pure shear failures at 65% compared to TP2a and TP2b at 55% each.  Shear strength values between the three methods were not significantly different, although, TP2b resulted in the lowest coefficient of variation at 18%.  Also, TP2b was found to be the most effective in terms of specimen preparation, ease of assembly of testing equipment, and low variability in data. 

Downloads

Download data is not yet available.

References

Alipon, M.A.; Bondad, E.O.; Sapin, G.N.; Exconde, A.B. 2011. Comparative physical and mechanical properties of giant bamboo from Malaybalay, Bukidnon and Mt. Makiling, Laguna. Philippine Forest Products Journal 2: 84-98.

ASTM Standard D143. 2007. Standard Test Methods for Small Clear Specimens of Timber. ASTM International, West Conshohocken, PA.

Cleuren, H.; Henkemans, A. 2003. Development of the bamboo sector in Ecuador: harnessing the potential of Guadua angustifolia. J Bamboo and Rattan 2(2): 179-188.

De Guzman, E.; Go, M., Tengki, K.; Oreta, A. 2012. Mechanical properties on flexure and shear of commercially available timber beams in the Philippines. Philippine Engineering Journal XXX (2): 21-34.

Escamilla, E.; Habert, G. 2014. Environmental impacts of bamboo-based construction materials representing global production diversity. Journal of Cleaner Production 69: 117-127.

Gutu, T. 2013. A study on the mechanical strength properties of bamboo to enhance its diversification on its utilization. International Journal of Innovative Technology and Exploring Engineering 2(5): 314-319.

ISO 2004. ISO 22157 Bamboo – determination of physical and mechanical properties. Geneva, Switzerland: ISO/IEC.

Janssen, J. 1981. Bamboo in building structures. Doctorate thesis, Eindhoven University of Technology, Netherlands. Retrieved from http://alexandria.tue.nl/extra3/proefschrift/PRF3B/ 8104676.pdf.

Li, X. 2004. Physical, chemical, and mechanical properties of bamboo and its utilization potential for fiberboard manufacturing. Master’s thesis, Louisiana State University, United States). Retrieved from http://etd.lsu.edu/docs/available/etd-04022004-144548/unrestricted/Li_thesis.pdf

Malab, S.; Zafaralla, J. 2006. Engineered kawayan technology promotion and investment options for commercialization (Monograph). Batac, Ilocos Norte: Mariano Marcos State University. 11p.

Marquez, C. 2006. Improving and maintaining productivity of Bambusa blumeana for quality shoots and timber in Iloilo and Capiz, the Philippines. Australian Centre for International Agricultural Research.

Mitch, D. 2009. Splitting capacity characterization of bamboo culms. (Undergraduate thesis, University of Pittsburgh, United States). Retrieved from http://d-scholarship.pitt.edu/6704/

Oka, G.; Triwiyono, A.; Awaludin, A.; Siswosukarto, S. 2014. Effects of node, internode, and height position on the mechanical properties of gigantochloa atriviolacea bamboo. 2nd International Conference on Sustainable Civil Engineering Structures and Construction Materials 2014.

Sharma, B.; Gatoo, A.; Bock, M.; Ramage, M. 2015. Engineered bamboo for structural applications. Construction and Building Materials 81: 66-73.
Published
2019-10-01
How to Cite
Luisa Cantos, G., F. Lopez, L., M. de Jesus, R., Salzer, C., & E. O. Garciano, L. (2019). Investigation of an alternative testing protocol to determine the shear strength of bamboo parallel to the grain. Maderas. Ciencia Y Tecnología, 21(4), 559-564. Retrieved from http://revistas.ubiobio.cl/index.php/MCT/article/view/3706
Section
Article