A review on hydraulic conductivity and compressibility of peat

Wong, L.S. and Hashim, Roslan and Ali, F.H. (2009) A review on hydraulic conductivity and compressibility of peat. Journal of Applied Sciences, 9 (18). pp. 3207-3218. ISSN 18125654, DOI https://doi.org/10.3923/jas.2009.3207.3218.

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This study reviews the results of several experimental and field investigations on the behavior of peat in hydraulic conductivity and compressibility. A study on the mechanical properties of peat is important in order to gather sufficient information on the response of the soil to preloading in terms of the soil permeability and deformation. Preloading technique is normally employed as a method to improve peat ground so that the improved ground can be used as a soil foundation to support road embankment. Findings on the initial hydraulic conductivity of peat revealed that the initial coefficient of vertical permeability (kv0) of the soil ranged from 10-5 to 10-8 m sec-1 with the value was found to be lower in amorphous peat as compared to that of fibrous peat. Such findings indicated that the initial hydraulic conductivity of peat is influenced by the soil degree of decomposition. The higher is the soil degree of decomposition, the lower is its initial rate of hydraulic conductivity. Results from oedometer tests on Portage peat showed that while the soil coefficient of secondary compression (cα1) ranged from 0.17 to 0.18, its coefficient of tertiary compression (cα2) varied from 0.6 to 0.18. At high consolidation pressure, the soil cα1 approached its cα2 indicating the merging of secondary and tertiary compression components. It can be concluded that the behavior of peat is different from that of inorganic soil in that it exhibited high to moderate initial hydraulic conductivity, rapid primary consolidation and large secondary compression.

Item Type: Article
Additional Information: Cited By (since 1996):6 Export Date: 16 December 2013 Source: Scopus Language of Original Document: English Correspondence Address: Wong, L. S.; Department of Civil Engineering, Faculty of Engineering, University of Malaya, Lembah Pantai, 50603 Kuala Lumpur, Malaysia References: Adams, J.I., The engineering behavior of a Canadian Muskeg (1965) Proceedings of the 6th International Conference on Soil Mechanics and Foundation Engineering, 1, pp. 3-7. , Montreal, Canada; Alwi, A., (2008) Ground Improvement of Malaysian Peat Soils using Stabilised Peat-Column Techniques, , Ph.D. Thesis, University of Malaya, Kuala Lumpur, Malaysia; Bell, F.G., (2000) Engineering Properties of Soils and Rocks, , 4th Edn., Blackwell Science, Oxford, London, ISBN: 0-632-05205-8; Berry, P.L., Vickers, B., Consolidation of fibrous peat (1975) J. Geotech. Eng. ASCE, 101, pp. 741-753; Colleselli, F., Cortellazzo, G., Cola, S., Laboratory Testing of Italian Peat Soils (2000) Geotechnics of High Water Content Materials, ASTM STP, , 1374, Edil, T.B. and P.J. Fox, (Eds.), American Society for Testing and Materials, West Conshohocken, PA; Den Haan, E.J., (1994) Vertical Compression of Soils, , Ph.D. Thesis, University of Technology, Delft, The Netherlands; Dhowian, A.W., Edil, T.B., Consolidation behavior of peats (1980) Geotech. Test. J., 3, pp. 105-114; Edil, T.B., Recent advances in geotechnical characterization and construction over peats and organic soils (2003) Proceedings of the 2nd International Conference in Soft Soil Engineering and Technology, , Putrajaya, Malaysia; Fox, P.J., Edil, T.B., Effects of stress and temperature on secondary compression of peat (1996) Can. Geotech. J., 33, pp. 405-415; Gofar, N., Sutejo, Y., Long term compression behavior of fibrous peat (2007) Malaysian J. Civil Eng., 19, pp. 104-116; Hanrahan, E.T., An investigation of some physical properties of peat (1954) Geotechnique, 4, pp. 108-123; Hartlen, J., Wolski, W., (1996) Embankments on Organic Soils, , 1st Edn., Elsevier Science B.V., Amsterdam, ISBN: 0-444-88273-1; Karlsson, R., Hansbo, S., (1981) Soil Classification and Identification, , 1st Edn., Swedish Council for Building Research, Stockholm, ISBN: 0-444-88549-8; Keene, P., Zawodniak, C.D., Embankment construction on peat utilizing hydraulic fill (1968) Proceedings of the 3rd International Peat Conference, 1968, pp. 45-50. , National Research Council of Canada, Ottawa, Canada; Kogure, K., Yamaguchi, H., Shogaki, T., Physical and pore properties of fibrous peat deposit (1993), Proceedings of the 11th Southeast Asian Geotechnical Conference, SingaporeKulathilaka, S.A.S., Improvement of engineering properties of peat by preconsolidation (1999) Proceedings of the Asian Regional Conference of International Society of Soil Mechanics and Geotechnical Engineering, pp. 97-10. , August, 1999, South Korea; Landva, A.O., Pheeney, P.E., Peat fabric and structure (1980) Geotechnique, 17, pp. 416-435; Lea, N.D., Brawner, C.O., Highway design and construction over peat deposits in lower British Columbia. Highway Res (1963) Record, 7, pp. 1-32; Lefebvre, G., Langlois, P., Lupien, C., Lavallee, J.G., Laboratory testing and in situ behaviour of peat as embankment foundation (1984) Can. Geotech. J., 21, pp. 322-337; Lewis, W.A., The settlement of the approach embankments to a new road bridge at Lockford, West Suffolk (1956) Geotechnique, 6, pp. 106-114; Mesri, G., Stark, T.D., Ajlouni, M.A., Chen, C.S., Secondary compression of peat with or without Surcharging (1997) J. Geotech. Geoenviron. Eng., 123, pp. 411-421; Mitchell, J.K., (1993) Fundamentals of Soil Behavior, , 2nd Edn., John Wiley and Sons, New York, ISBN: 0-471-85640-1; Robinson, R.G., A study on the beginning of secondary compression of soils (2003) J. Test. Eval., 31, pp. 388-397; Samson, L., la Rochelle, P., Design and performance of an expressway constructed over peat by preloading (1972) Can. Geotech. J., 9, pp. 447-466; Terzaghi, K., Peck, R.B., Mesri, G., (1996) Soil Mechanics in Engineering Practice, , 3rd Edn., Wiley and Sons, New York, ISBN: 0-471-08658-4; Warburton, J., Holden, J., Mills, A.J., Hydrological controls of surficial mass movements in peat (2004) Earth-Sci. Rev., 67, pp. 139-156; Weber, W.G., Performance of embankments constructed over peat (1969) J. Soil Mech. Found. Div., 95, pp. 53-76; Whitlow, R., (2001) Basic Soil Mechanics, , 4th Edn., Pearson Education, London, ISBN: 0-582-38109-6; Wong, L.S., Laboratory evaluation of horizontal coefficient of consolidation of fibrous peat soil (2005) Master Project Report, , Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
Uncontrolled Keywords: Compressibility, Experimental and field investigations, Hydraulic conductivity, Peat, Consolidation pressure, Degree of decomposition, Field investigation, Primary consolidation, Road embankments, Secondary compression, Soil permeability, Vertical permeabilities, Soil mechanics, Soils
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 10 Feb 2014 02:13
Last Modified: 24 Jan 2019 08:50
URI: http://eprints.um.edu.my/id/eprint/8866

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