Modeling water flow patterns in flexible pavement
2005 (English)In: TRB 2005 Annual Meeting: . 84th Annual Meeting, January 9-13, 2005, Washington, DC., 2005Conference paper (Other academic)
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 role 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/environment system. The water transport model used in this manuscript is one such model. The objective of this study was to investigate the applicability of hydrological theories and methods to the road/environment system. 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. The effect of rain intensity, precipitated amount, and/or fracture conductivity on the flow patterns was investigated using numerical particle tracking. 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 while capillary barrier effects were limited. The numerical code used proved to be appropriate in describing the relevant processes.
Place, publisher, year, edition, pages
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:uu:diva-67744OAI: oai:DiVA.org:uu-67744DiVA: diva2:95655
TRB 84th Annual Meeting, January 9-13, 2005, Washington, DC.