Anti-Skid Treatment Tests with Glucose, Fructose and Unrefined Sugar
2007 (English)In: / [ed] TRB, Washington: TRB , 2007Conference paper (Refereed)
Over the past ten years, salt consumption for de-icing treatment on Swedish roads has been halved from approximately 400,000 tons to some 200,000 tons per year. This is largely a result of preventive measures with salt solution, which entails significantly smaller salt doses than in the case of dry and moistened salt. The purpose of the investigation has been to conduct tests with a salt solution in combination with glucose/fructose/refined sugar in order to determine whether a certain amount of the salt solution can be replaced by a product containing these substances and the kind of technical and environmental effects the mixture would have. The introductory trials, which were performed on an airport landing strip 2004/2005 gave experience of value, regarding friction coefficients etc, to continued testing. Field tests have been carried out the winter season 2005/2006. The fact that salt will continue to play an important role in anti-freeze treatment is borne out by the testing. The investigation has shown that it is possible to use a mixture of the salt solution that is today used for anti-freeze treatment together with a glucose/fructose product and maintain safety friction conditions. Exactly how large the sugar solution is and its concentration should be further studied through continued airfield trials and as well as on a section of road used by traffic. The results from the recent season as using mixtures of 75% salt and 25% sugar as well as trials on 50/50 base, looks promising. The sugar part of the solution can not melt ice but delay freezing. The product should be looked upon as a complement to salt as it leads to a lower freezing-point of the solution. Friction measurements Cost The analysis does not contain any form of financial evaluation in year one as to the cost of the solution or the value of reduced salt attack on the vehicle fleet. Since the mixtures have been produced manually and on a small scale, practical handling of the mixtures on a larger scale is included in the investigation in the winter season 2005/2006. The products environmental impact on corrosion, concrete, animal life and plant life have been studied. Oxygen is consumed in the breakdown of glucose/fructose/unrefined sugar. The breaking down of glucose/fructose/unrifined sugar by micro-organisms is influenced by the presence of toxic substances such as metals and salts and should be studied both in the field and in the laboratory. Furthermore, the oxygen consumption in recipients should be studied.
Place, publisher, year, edition, pages
Washington: TRB , 2007.
, HRIS, 07-0613
Anti skid treatment; Deicing; Deicing chemicals; Environmental impacts; Freezing; Glucose; Highway maintenance; Highway safety; Skid resistance; Skidding; Sugar; Winter maintenance
Earth and Related Environmental Sciences
IdentifiersURN: urn:nbn:se:kth:diva-40855OAI: oai:DiVA.org:kth-40855DiVA: diva2:442493
86th Annual TRB Conference, January 21-25, Washington DC, USA
QC 201109302011-09-212011-09-212011-09-30Bibliographically approved