The main objective of the work described in this paper was the development of a model for surface type selection for low volume roads and the testing of the model by applying it to a network of low-volume roads. Surface treatments, seal coats and chip seals are commons surface types on low volume roads in Canada. With changes in traffic volumes and business activities, transportation agencies face the challenge of deciding if and when surface-treated pavements should be upgraded to asphalt concrete pavements or, alternatively, when asphalt concrete pavements should be downgraded. Many agencies base the decision to upgrade a roadway based on traffic volumes, but most do not have a formal set of guidelines for deciding if the surface of a low volume road should be surface-treated or asphalt concrete. This paper describes a model, based on a numerical score, which facilitates systematic and judicious selection of pavement surface type for low volume roads. For the covering abstract of this conference see ITRD number E216511.
Samenvatting