Water and heat flow in a road construction
2004 (English)Conference paper (Refereed)
Construction of new roads and maintenance of old ones are major undertakings in infrastructure management. Our wish for safe, comfortable and rapid road transportation has increased, creating new demands on road construction and maintenance. Road deterioration is costly for society and for transportation companies. The Swedish National Road Authority has thus invested large resources in developing a road deterioration model, in order to improve road construction and maintenance. A crucial factor for road deterioration is the ability to withstand the wear of passing vehicles. Since this ability is greatly decreased by moisture in the road construction, water and heat flow (to be able to account for freezing/thawing) modelling has become an important issue. As a part of this work, a freezing and thawing routine has been implemented in the HYDRUS1D/2D model codes. The routine has been tested in a laboratory column freezing experiment and in a hypothetical road situation, using climate data from northern Sweden. The objective of this presentation is to point out the need for hydrological contributions to road research and review potential models of water and heat flow to be used in this context, including the newly developed HYDRUS2D model code, including freezing and thawing routines.
Place, publisher, year, edition, pages
2004. 474-484 p.
, NHP report, 48
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:uu:diva-66671OAI: oai:DiVA.org:uu-66671DiVA: diva2:94582
XXIII Nordic Hydrological Conference, Tallinn, Estonia, 8-12 August 2004