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A platform for research: civil engineering, architecture and urbanism
Geotechnical study on Kordofan tropical black soils (Sudan Republic)
Abstract A study was made of the applicability of South Kordofan tropical black clays (Sudan) as a construction material for small earth dams in rural areas. The broad task is to determine the design parameters and develop simplified design criteria for low-cost small earth dams in semi-arid regions. The present work concentrates on the geological and basic geotechnical characteristics of Kordofan tropical black clays. Soil samples were collected from ten locations in South Kordofan province. Classification, grain size distribution, compaction tests and shear strength, swelling, chemical and mineralogical tests indicate that South Kordofan black clays are very plastic, expansive, generally of low permeability, and of moderate to low density. Most of the samples show an irregular compaction curve with peaks at very low water content (6–12%) and at higher water content (19–26%), probably attributable to the interaction between the physical (e.g. fabric) and chemical properties and the mineralogical composition. Some samples are moderately dispersive. As a general conclusion, these clays could be used for small earth dams successfully if attention is paid to compaction, placement water content, shrinkage fissures and filter design.
Geotechnical study on Kordofan tropical black soils (Sudan Republic)
Abstract A study was made of the applicability of South Kordofan tropical black clays (Sudan) as a construction material for small earth dams in rural areas. The broad task is to determine the design parameters and develop simplified design criteria for low-cost small earth dams in semi-arid regions. The present work concentrates on the geological and basic geotechnical characteristics of Kordofan tropical black clays. Soil samples were collected from ten locations in South Kordofan province. Classification, grain size distribution, compaction tests and shear strength, swelling, chemical and mineralogical tests indicate that South Kordofan black clays are very plastic, expansive, generally of low permeability, and of moderate to low density. Most of the samples show an irregular compaction curve with peaks at very low water content (6–12%) and at higher water content (19–26%), probably attributable to the interaction between the physical (e.g. fabric) and chemical properties and the mineralogical composition. Some samples are moderately dispersive. As a general conclusion, these clays could be used for small earth dams successfully if attention is paid to compaction, placement water content, shrinkage fissures and filter design.
Geotechnical study on Kordofan tropical black soils (Sudan Republic)
Nawari, O. (author) / Schetelig, K. (author)
Engineering Geology ; 31 ; 1-26
1990-11-12
26 pages
Article (Journal)
Electronic Resource
English
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