Mgangira, Martin BPaige-Green, P2008-11-272008-11-272008-11Mgangira, M.B. 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 79780620425117http://hdl.handle.net/10204/2641South African Institute for Engineering and Environmental GeologistsThis 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 pavementenBlack cotton soilDistressExpansivePavementConference PresentationMgangira, M. B., & Paige-Green, P. (2008). Premature distress of a pavement on expansive black cotton soil in the Horn of Africa. http://hdl.handle.net/10204/2641Mgangira, Martin B, and P Paige-Green. "Premature distress of a pavement on expansive black cotton soil in the Horn of Africa." (2008): http://hdl.handle.net/10204/2641Mgangira MB, Paige-Green P, Premature distress of a pavement on expansive black cotton soil in the Horn of Africa; 2008. http://hdl.handle.net/10204/2641 .TY - Conference Presentation AU - Mgangira, Martin B AU - Paige-Green, P AB - 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 DA - 2008-11 DB - ResearchSpace DP - CSIR KW - Black cotton soil KW - Distress KW - Expansive KW - Pavement LK - https://researchspace.csir.co.za PY - 2008 SM - 9780620425117 T1 - Premature distress of a pavement on expansive black cotton soil in the Horn of Africa TI - Premature distress of a pavement on expansive black cotton soil in the Horn of Africa UR - http://hdl.handle.net/10204/2641 ER -