Numerical Evolution of Deicer Amount on Pavement Surface: Traffic and Weather Influences

Deicers are used to maintain a proper grip in icy conditions. Tons of deicers are spread over French roads, and 20% to 30% of deicers could be saved. This study evaluates residual deicer on a road after a winter maintenance operation to assess and to improve safety. This could optimize the spread quantity to reach cost-effective spreading. The homogeneity of the amount of deicer on the road, the effect of precipitations, and the traffic influences have been studied. A 200-m highway section was selected. Patterns of sodium chloride from calibration data of winter maintenance vehicles were used. Precipitation data were used to modelize the water amount. Highway traffic intensity was used as an input. Their evolutions were taken over a 24-h period. Traffic includes trajectory distributions, and distinguishes cars from trucks. The deicer amount is calculated with a numerical model. The calculation considers a homogeneous weather over the whole road section. The traffic intensity depends on road location and on corresponding traffic distribution. The deicer removal is calculated hourly. For each passing vehicle, a fraction of deicer is lost, depending on tire size. Slopes and pavement markings create streaming heterogeneities: the higher the deicer concentration the better the protection against freezing. A color code identifies critical zones (in red) on the road stretch, where wheel tracks could be easily identified. A comparative analysis between and within lanes has been included.

• Record URL:
  http://www.trb.org/Publications/Blurbs/160000.aspx
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00978515
• Authors:
  • Marchetti, Mario
  • Duval, Rodolphe
  • Livet, Jean
  • Francois, Maurice
  • Pecquenard, Philippe
  • Guillevic, Pierre
• Conference:
  • Fourth National Conference on Surface Transportation Weather; Seventh International Symposium on Snow Removal and Ice Control Technology
  • Location: Indianapolis Indiana, United States
  • Date: 2008-6-16 to 2008-6-19
• Publication Date: 2008-6

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 112-124
• Monograph Title: Surface Transportation Weather and Snow Removal and Ice Control Technology: Fourth National Conference on Surface Transportation Weather and Seventh International Symposium on Snow Removal and Ice Control Technology, June 16-19, 2008, Indianapolis, Indiana
• Serial:
  • Transportation Research Circular
  • Issue Number: E-C126
  • Publisher: Transportation Research Board
  • ISSN: 0097-8515

Subject/Index Terms

• TRT Terms: Deicing chemicals; Mathematical models; Optimization; Precipitation (Meteorology); Sodium chloride; Traffic distribution; Vehicle mix; Winter maintenance
• Uncontrolled Terms: Quantities
• Geographic Terms: France
• Subject Areas: Highways; Maintenance and Preservation; I62: Winter Maintenance;

Filing Info

• Accession Number: 01103942
• Record Type: Publication
• Report/Paper Numbers: Snow08-046
• Files: TRIS, TRB
• Created Date: Jun 30 2008 3:05PM