| Autor: |
Bolet, Lars, Fonnesbech, Jens Kristian |
| Jazyk: |
angličtina |
| Rok vydání: |
2010 |
| Zdroj: |
Bolet, L & Fonnesbech, J K 2010, Ice Control with Brine Spread with Nozzles on Highways : Implementation of Brine Spreading Technologies in Denmark . in The Congress Proceedings : Sustainable Winter Service for Road Users . XIII International Winter Road Congress-PIARC 2010, Québec, Canada, 08/02/2010 . |
| Popis: |
During the years 1996-2006, the former county of Funen, Denmark, gradually replaced pre-wetted salt with brine spread with nozzles as anti-icing agent in all her ice control activities. The replacement related to 1000 kilometres of highways. Jeopardizing neither road safety nor traffic flow the spread rate of pure sodium chloride (and thus the environmental impact) compared to neighbouring counties was less than fifty percent per square meter.Successful pre-salting is, of course, dependent on reliable weather forecasts and on staff well trained in the art of interpreting this information. The improvements gained by the county of Funen were mainly due to the use of technologies (brine spreading with nozzles) giving a more precise spread pattern than the traditional gritting of pre-wetted salt.The spread pattern for every spreader, tested in The County of Funen, has been meassured 3 hours after spreading on a highway with traffic. A total of 800 spots were measured for residual salt for every spreader. The measurements and the spread pattern for brine spreading with nozzles were so precisely, that we learned: “When there is moisture, water or ice on the road, we need to take into account that the salt will run from the high level of the road to the lower level”. In the test the salt moved 1 meter in 3 hours.The knowledge gained from the measurements in the county of Funen - brine spread with nozzles, spreading salt to high level of the road and using GPS controlled spreading – was implemented on the major roads (150 km) in the municipality of North Funen from the winter 2007/8.The result has been a dramatically reduction in the number of traffic accidents on slippery roads during the winter season. From 7 and 5 accidents in the previous 2 winters to 1 accident in the winter 2007/8. Neighbouring municipalities had an increasing number of traffic accidents on slippery roads in the same period. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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