Sökning: "Frost Depth"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden Frost Depth.
1. Laboratory Investigations of Frost Action Mechanisms in Soils
Sammanfattning : Phase change of the water in the soil skeleton under cold climate conditions (also known as frost action in soils) affects soil properties and can be responsible for serious alterations in a soil body; causing damages (due to the volumetric expansion known as frost heave) to structures on or below the ground surface such as foundations, roads, railways, retaining walls and pipelines, etc. In order to improve the current design methods for roads against frost action, the Swedish Transport Administration (Trafikverket) has initiated a research program. LÄS MER
2. Frost modelling and pavement temperatures : summer pavement temperaures and frost modelling
Sammanfattning : Three papers form the present thesis. In paper I a numerical model for calculation of surface temperatures on a highway is presented. The model takes all relevant factors into consideration, i.e. LÄS MER
3. Thermal balance inside culverts subjected to seasonal frost for determination of frost depth
Sammanfattning : .... LÄS MER
4. Energy Efficiency in Winter Road Maintenance - A Road Climatological Perspective
Sammanfattning : Practices in winter road maintenance are dependent on the climate and weather impacting roads and the road users’ requirements. As in many other fields of transportation, it is of interest to investigate fuel efficiency potentials in the different aspects of the road maintenance area. LÄS MER
5. Experimental Study of De-icing Salt-frost Scaling in Concrete with Low-calcium Fly Ash or Slag : Influence of Drying and Carbonation, and Air Content
Sammanfattning : In order to reduce the net climate impact of concrete production, it is necessary for the industry to undertake several actions. Among these is to include fly ash and slag as supplementary cementitious materials. Accordingly, this project has studied concrete containing low-calcium fly ash or ground-granulated blast-furnace slag. LÄS MER