Effect of freeze-thaw cycles and deicing fluids on pavements

Winter maintenance has a crucial role in the road management system in Scandinavia. Transportation systems must allow the effective and efficient movement of people and goods under all climatic conditions. Smooth and safe traffic conditions can be achieved with different maintenance strategies. Deicers are widely used to avoid and remove thin ice layers either on the airfields or roads pavements at low temperatures. Although their immediate effect consists of a fast improvement of the pavement conditions, the amount of chemicals, the freeze-thaw cycles and high summer temperatures can affect the performance of the pavement surface. The purpose of this study is to evaluate the effect of different deicing solutions on asphalt mixtures. Two chemical agents have been selected: sodium chloride used on roads, and potassium formate used on airfields to reduce the freezing point of the water present on the asphalt surface. Solutions with different concentrations of each deicer have been chosen and related with their effect on the asphalt material subjected to a predetermined number of freeze-thaw cycles. Particle loss of the specimen, determined with the Cantabro test, has been selected as an indicator to determine the deterioration of the mixture after several freeze-thaw cycles while immersed in deicing solutions. Alterations of the bitumen have been measured evaluating the performance grade of the retrieved bitumen. Depending on the amount of chemical agent in the solution, and following results from the Cantabro test and the performance grading of the bituminous binder, the alteration of the asphalt material was determined. Abrasion and bitumen performance, determined as above mentioned, are anticipated to be affected by the chemical action of the deicer.

Language

  • English

Media Info

  • Pagination: pp 667-676
  • Monograph Title: Bearing capacity of roads, railways and airfields: proceedings of the ninth International Conference on the Bearing Capacity of Roads, Railways and Airfields: Trondheim, Norway 25-27 June 2013. Vol 1-2

Subject/Index Terms

Filing Info

  • Accession Number: 01596564
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • ISBN: 9788232102853
  • Files: ITRD, VTI
  • Created Date: Apr 21 2016 12:31PM