Mgangira, Martin B2009-10-122009-10-122009-08Mgangira, M.B. 2009. Characterization of pavement distress from test pit observation. GeoHunan: Challenges and Recent Advances in Pavement Technologies and Transportation Geotechnics International Conference, Hunan, China, 3-6 August 2009, pp 1-7978-0-7844-1043-1http://hdl.handle.net/10204/3653GeoHunan: Challenges and Recent Advances in Pavement Technologies and Transportation Geotechnics International Conference, Hunan, China, 3-6 August 2009The characteristics of the roadbed material are critical to the overall performance of the pavement. The paper presents examples with discussion of the form of distress experienced within the pavement layers, based on observations made during the profiling exercise of an investigation into the causes of the premature failure of a pavement. The field investigation entailed a detailed inspection and recording of the profile exposed in test pits, with particular attention being paid to areas with cracks, noting their positions and extent within the pavement layers. The focus of the paper is on the observed orientation of crack propagation within the pavement layers. It is shown that the crack propagation is not always in the vertical plane. This has implications in dealing with crack sealing procedures. The causes of the observed distress were attributed to the behaviour of the roadbed as it experienced fluctuating moisture conditions.enRoad materialPavement distressPavement layersIn-situ pavement materialsCrack propagationRoadbedGeoHunanPavement technologiesTest pitsConference PresentationMgangira, M. B. (2009). Characterization of pavement distress from test pit observation. http://hdl.handle.net/10204/3653Mgangira, Martin B. "Characterization of pavement distress from test pit observation." (2009): http://hdl.handle.net/10204/3653Mgangira MB, Characterization of pavement distress from test pit observation; 2009. http://hdl.handle.net/10204/3653 .TY - Conference Presentation AU - Mgangira, Martin B AB - The characteristics of the roadbed material are critical to the overall performance of the pavement. The paper presents examples with discussion of the form of distress experienced within the pavement layers, based on observations made during the profiling exercise of an investigation into the causes of the premature failure of a pavement. The field investigation entailed a detailed inspection and recording of the profile exposed in test pits, with particular attention being paid to areas with cracks, noting their positions and extent within the pavement layers. The focus of the paper is on the observed orientation of crack propagation within the pavement layers. It is shown that the crack propagation is not always in the vertical plane. This has implications in dealing with crack sealing procedures. The causes of the observed distress were attributed to the behaviour of the roadbed as it experienced fluctuating moisture conditions. DA - 2009-08 DB - ResearchSpace DP - CSIR KW - Road material KW - Pavement distress KW - Pavement layers KW - In-situ pavement materials KW - Crack propagation KW - Roadbed KW - GeoHunan KW - Pavement technologies KW - Test pits LK - https://researchspace.csir.co.za PY - 2009 SM - 978-0-7844-1043-1 T1 - Characterization of pavement distress from test pit observation TI - Characterization of pavement distress from test pit observation UR - http://hdl.handle.net/10204/3653 ER -