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Modeling water flow patterns in flexible pavements
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
2005 (English)In: Soil Mechanics 2005, Washington D.C.: Transportation Research Board of the National Academies , 2005, no 1936, 133-141 p.Chapter in book (Other academic)
Abstract [en]

Most road design models do not explicitly account for moisture transport mechanisms in roads, even though it is well known that water content plays an important part in the deterioration of roads. The Swedish National Road Administration aims to improve the current situation by supporting the development of models that eventually can provide a better and more complete description of the road and environment system. The applicability of hydrological theories and methods to the road and environment system was investigated. Particular attention was paid to flow patterns inside the road as affected by capillary barriers and generated by mechanisms of surface runoff, followed by infiltration into cracks, and the embankment. Particle tracking was used to investigate the effect of rain intensity, precipitated amount, or fracture conductivity on the flow patterns. Changes in rain intensity had a small effect on flow patterns, but velocities were higher for larger rain intensities. Both changes in precipitated amount and fracture conductivity controlled the appearance of the flow patterns, but capillary barrier effects were limited. The numerical code used proved to be mostly appropriate in describing the relevant processes.

Place, publisher, year, edition, pages
Washington D.C.: Transportation Research Board of the National Academies , 2005. no 1936, 133-141 p.
Series
Transportation Research Record: Journal of the Transportation Research Board, ISSN 0361-1981 ; 1936
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-140534DOI: 10.3141/1936-16ISI: 000237192800016Local ID: 01023507ISBN: 0309094100 (print)OAI: oai:DiVA.org:uu-140534DiVA: diva2:383769
Available from: 2011-01-05 Created: 2011-01-05 Last updated: 2013-10-01Bibliographically approved

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