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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/2641

Title: Premature distress of a pavement on expansive black cotton soil in the Horn of Africa
Authors: Mgangira, MB
Paige-Green, P
Keywords: Black cotton soil
Distress
Expansive
Pavement
Issue Date: Nov-2008
Citation: Mgangira, MB and Paige-Green, P. 2008. Paige Green. Premature distress of a pavement on expansive black cotton soil in the Horn of Africa. Problem soils in South Africa conference, Midrand, Gauteng, South Africa, November 3-4, 2008, pp 7
Abstract: This paper discusses a typical example of the distress experienced by a flexible pavement constructed over black clay soil, also commonly known as black cotton soil, where minimal precautionary measures were implemented. Black cotton soils are generally recognized as expansive soils and change significantly in volume with changes in the moisture condition due to wetting-up and drying-out during the wet and dry seasons respectively. The volume changes lead to differential deformation which then induces distress and leads to damage of the pavement constructed on such soils. By way of example the paper describes an investigation of a road in the Horn of Africa in an area with extensive deposits of the black clays, demonstrating the importance of correctly characterizing these soils prior to the pavement design and taking appropriate counter measures against expected movement of the roadbed that will cause damage to the pavement
Description: South African Institute for Engineering and Environmental Geologists
URI: http://hdl.handle.net/10204/2641
ISBN: 9780620425117
Appears in Collections:Infrastructure engineering
General science, engineering & technology

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