Coir Fibre: A Sustainable Engineering Material for the Caribbean Islands
AbstractOne of the most inventive, sustainable strategies used in ground engineering is the substitution of biodegradable materials for non-biodegradable materials, particularly in situations where short-term ground improvement is needed. Biodegradable materials such as vegetable fibres have excellent engineering properties that could be used in the construction industry to enhance filtration, drainage and reinforcement. Two of the most important properties of vegetable fibres used for soil reinforcement are their high initial tensile strength and environmentally-friendly qualities. This paper investigates the time-dependent behaviour of basal-reinforced embankments erected on soft ground using biodegradable geotextiles, such as coir fibre, derived from coconuts, as reinforcing materials. An analytical model for soil reinforcement, which incorporates changes of foundation soil strength over time due to consolidation, is analyzed using the GEO5 slope stability computer software. The initial strength of the fibre reinforcement required to achieve a specific factor of safety is calculated.
Anthony, M. (1997). Historical dictionary of Trinidad and Tobago. Scarecrow Press.
Bismarck, A., Mohanty, A. K., Aranberri-Askargorta, I., Czapla, S., Misra, M., Hinrichsen, G., & Springer, J. (2001). Surface characterization of natural fibers; surface properties and the water up-take behavior of modified sisal and coir fibers. Green Chemistry, 3(2), 100-107. https://doi.org/10.1039/B100365H
GEO5 Geotechnical Software. (1999-2007). http://www.finesoftware.eu/geotechnicalsoftware/
Holtz, R. D. (2001). Geosynthetics for soil reinforcement: The ninth Spencer J. Buchanan lecture. http://www.iransaze.com/files-for-download/maghale/link-maghalat/akbari-english/Geosynthetics%2520for%2520soil%2520reinforcement.pdf
Ingold, T. S. (1986). Analysis of geotextile reinforced embankments over soft clays. Highways and Transportation, 33(3), 3-8. https://trid.trb.org/view/283486
Jewell, R. A. (1988). The mechanics of reinforced embankments on soft soils. Geotextiles and Geomembranes, 7(4), 237-273. https://doi.org/10.1016/0266-1144(88)90001-5
Jones, C. J. F. P. (1996). Earth reinforcement and soil structures. Thomas Telford.
Kaniraj, S. R., & Abdullah, H. (1992). Stability analysis of reinforced embankments on soft soils. Journal of Geotechnical Engineering, 118(12), 1994-1999. https://doi.org/10.1061/(ASCE)0733-9410(1992)118:12(1994)
Kaniraj, S. R., & Abdullah, H. (1993). Rotational stability of narrow-crested reinforced embankments on soft soils. Geotextiles and Geomembranes, 12(7), 599-614. https://doi.org/10.1016/0266-1144(93)90031-I
Mwasha, A. (2003). Time dependent behaviour of embankment reinforced with limited life geotextiles. In D. Proverbs (Ed.), COBRA 2003: Proceedings of the RICS Foundation Construction and Building Research Conference (pp 456-469). http://www.rics.org/NR/rdonlyres/27B5E0E2-755A-40D3-BA0EB314F5335C49/0/limited_life_geotextiles.pdf
Mwasha, A. (2005). Limited life basal reinforcement for an embankment built on saturated soft clay [Doctoral dissertation, University of Wolverhampton, England]. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420219
Mwasha, A. (2006). Authenticity on applications of Terzhagi’s deferential equation for the estimation of pore water pressure. Mathematics and its Applications, Institute of Critical Thinking, University of the West Indies.
Mwasha, A. (2008). Using environmentally friendly geotextiles for soil reinforcement: A parametric study. Materials & Design, 30(5),1798-1803. https://doi.org/10.1016/j.matdes.2008.07.018
Pritchard, M. (1999). Vegetable fibre geotextiles [Unpublished doctoral dissertation]. Manchester University, Bolton Institute, England.
Vogel, M. N. (2004). Up against the wall: An archaeological field guide to bricks in Western New York. http://www.buffaloah.com/a/DCTNRY/mat/brk/vogel/index.html