Nya tekniker och metoder inom vinterväghållning: en litteraturgenomgång
2007 (Swedish)Report (Other academic)Alternative title
New technology and new methods in winter road maintenance. Documentary study (English)
Among new technology and new methods in winter road maintenance, with special interest, the following can be emphasized.
Advanced technology highway maintenance vehicle: The maintenance vehicle is not only an operational truck but also a mobile data gathering platform. The following examples of sensors and equipment have been suggested: - System to determine the location of the truck by use of GPS technology - System for recording meteorological data such as air and road surface temperature, humidity and sight distances - System for gathering data about road surface conditions, road surface friction characteristics and freezing point temperature of a wet, moist or slushy road - System for recording application rate of spread materials, e.g. sand or salt - System for transmitting the above mentioned data wirelessly to a dispatch centre where data are recorded on magnetic media.
Admixture of sugar to salt: - Sugar cannot melt snow or ice but can prevent abrupt freezing - Patent process: Sugar is manufactured directly from raw sugar beet, not from waste agricultural products - End product: Sugar beet flour containing 75 % sugar and 25 % beet substance - 30 % sugar beet flour is mixed with 70 % warm water, enzyme is added and
completed sugar solution is obtained. About 25 % sugar content - The sugar solution was tested mixed with brine, and also when used for prewetting dry salt - The results did not show any significant differences in friction characteristics.
Admixture of sugar to sand: - Sand was mixed with 50-100 litres of sugar solution per m3 - Result: The same friction characteristics as sand mixed with 80 litres of brine per m3 - No problems with freezing in storehouse.
Warm sand: - Method: Hot water is mixed with sand at the moment of spreading - Sand adheres to the road surface and creates a sandpaper effect - Long duration in stable weather conditions.
Place, publisher, year, edition, pages
Linköping: VTI., VTI rapport 569 , 2007. , 52 p.
VTI rapport, ISSN 0347-6030
Winter maintenance, Technology, Snow clearance equipment, Snow plough, Deicing, Salt, Sugar, Gritting, Sand, Road heating, Method, Apparatus, Snow, Friction, Temperature
Research subject Road: Maintenance, Road: Winter maintenance
IdentifiersURN: urn:nbn:se:vti:diva-6432OAI: oai:DiVA.org:vti-6432DiVA: diva2:675309