Geotechnical characterisation of marine clay as potential liner material

Natural clay is commonly used as a liner material to contain landfill leachate from contaminating the environment. A key characteristic of liner material is its hydraulic conductivity. It is recommended that the hydraulic conductivity of the potential liner material should be of 1×10-9 m/s or less....

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Main Authors:	Rahman, Z.A., Yaacob, W.Z.W., Rahim, S.A., Lihan, T., Idris, W.M.R., Mohd Sani, W.N.F.
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2013
Online Access:	http://journalarticle.ukm.my/6446/ http://journalarticle.ukm.my/6446/ http://journalarticle.ukm.my/6446/1/07_Z.A._Rahman.pdf

id	ukm-6446
recordtype	eprints
spelling	ukm-64462016-12-14T06:41:12Z http://journalarticle.ukm.my/6446/ Geotechnical characterisation of marine clay as potential liner material Rahman, Z.A. Yaacob, W.Z.W. Rahim, S.A. Lihan, T. Idris, W.M.R. Mohd Sani, W.N.F. Natural clay is commonly used as a liner material to contain landfill leachate from contaminating the environment. A key characteristic of liner material is its hydraulic conductivity. It is recommended that the hydraulic conductivity of the potential liner material should be of 1×10-9 m/s or less. This paper presents the geotechnical characteristics of marine clay that may be used as landfill liner material. The tests were consistency index, compaction behaviour, compressibility and hydraulic conductivity. The marine clay was dominated by finer fraction of silt and clay (78%-88%) followed by sand (12%-22%). The clay minerals commonly present were montmorillonite, kaolinite and illite as well as quartz as the non-clay mineral. The consistency index for the liquid limit, wL and plastic limit, wP were 56.6%-80.5% and 36%-45%, respectively. The plastic index, Ip of the marine clay samples ranged from 19% to 37%. The permeability test indicated that the hydraulic conductivity of the samples ranged between 1.10 × 10-9 and 2.44 × 10-9 m/s. The very low permeability showed by the marine clay can be related to the presence of high content of finer fraction. Compaction of marine clay samples resulted in maximum dry density, ρdmax that ranged between 1.5 and 1.6 g/cm3 and optimum moisture content, wopt that ranged between 18.2% and 25%. During the consolidation of the marine clay, the hydraulic conductivity decreased within the recommended permeability for landfill liners. This study showed that some geotechnical characteristics of the studied marine clay were in favour of being used as landfill liner material. Universiti Kebangsaan Malaysia 2013-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/6446/1/07_Z.A._Rahman.pdf Rahman, Z.A. and Yaacob, W.Z.W. and Rahim, S.A. and Lihan, T. and Idris, W.M.R. and Mohd Sani, W.N.F. (2013) Geotechnical characterisation of marine clay as potential liner material. Sains Malaysiana, 42 (8). pp. 1081-1089. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Natural clay is commonly used as a liner material to contain landfill leachate from contaminating the environment. A key characteristic of liner material is its hydraulic conductivity. It is recommended that the hydraulic conductivity of the potential liner material should be of 1×10-9 m/s or less. This paper presents the geotechnical characteristics of marine clay that may be used as landfill liner material. The tests were consistency index, compaction behaviour, compressibility and hydraulic conductivity. The marine clay was dominated by finer fraction of silt and clay (78%-88%) followed by sand (12%-22%). The clay minerals commonly present were montmorillonite, kaolinite and illite as well as quartz as the non-clay mineral. The consistency index for the liquid limit, wL and plastic limit, wP were 56.6%-80.5% and 36%-45%, respectively. The plastic index, Ip of the marine clay samples ranged from 19% to 37%. The permeability test indicated that the hydraulic conductivity of the samples ranged between 1.10 × 10-9 and 2.44 × 10-9 m/s. The very low permeability showed by the marine clay can be related to the presence of high content of finer fraction. Compaction of marine clay samples resulted in maximum dry density, ρdmax that ranged between 1.5 and 1.6 g/cm3 and optimum moisture content, wopt that ranged between 18.2% and 25%. During the consolidation of the marine clay, the hydraulic conductivity decreased within the recommended permeability for landfill liners. This study showed that some geotechnical characteristics of the studied marine clay were in favour of being used as landfill liner material.
format	Article
author	Rahman, Z.A. Yaacob, W.Z.W. Rahim, S.A. Lihan, T. Idris, W.M.R. Mohd Sani, W.N.F.
spellingShingle	Rahman, Z.A. Yaacob, W.Z.W. Rahim, S.A. Lihan, T. Idris, W.M.R. Mohd Sani, W.N.F. Geotechnical characterisation of marine clay as potential liner material
author_facet	Rahman, Z.A. Yaacob, W.Z.W. Rahim, S.A. Lihan, T. Idris, W.M.R. Mohd Sani, W.N.F.
author_sort	Rahman, Z.A.
title	Geotechnical characterisation of marine clay as potential liner material
title_short	Geotechnical characterisation of marine clay as potential liner material
title_full	Geotechnical characterisation of marine clay as potential liner material
title_fullStr	Geotechnical characterisation of marine clay as potential liner material
title_full_unstemmed	Geotechnical characterisation of marine clay as potential liner material
title_sort	geotechnical characterisation of marine clay as potential liner material
publisher	Universiti Kebangsaan Malaysia
publishDate	2013
url	http://journalarticle.ukm.my/6446/ http://journalarticle.ukm.my/6446/ http://journalarticle.ukm.my/6446/1/07_Z.A._Rahman.pdf
first_indexed	2023-09-18T19:46:55Z
last_indexed	2023-09-18T19:46:55Z
_version_	1777405961251586048

Geotechnical characterisation of marine clay as potential liner material

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