TEST WITH PRE-WETTED SALT ON E4 AT OEDESHOEG IN THE WINTER-PERIOD 1982/1983

PROV MED BEFUKTAT SALT PAA E4 VID OEDESHOEG VINTERN 1982/83

On Swedish roads, chemical deicing is usually performed with dry sodium chloride (NaCl). In order to make deicing more effective and to reduce the use of NaCl, the Swedish road administration has since the winter period 1980-1981 tested a number of salt spreaders with possibility of pre-wetting of the salt. To pre-wet the NaCl a solution of CaCl1 has been used. Previous studies of the effect of the pre-wet method have been described in reports from VTI. This report outlines further investigations during the winter period 1982-1983. The extent of the investigations has primarily been measurements of the skid-resistance and salt content on the road, before and after salt-spreading. The major part of the spreading operations described have been performed during snowfall with temperatures just below 0 deg C. Only on a couple occasions have there been icy conditions due to ice, black-ice or hoar-frost. Pre-wetted salting with the spreader (Weisser) used in this test means a 30% reduction of the dry salt (NaC1) when at thee same time 30% by weight of CaC12-solution is added. The actual reduction of salt (nacl + cacl2) will therefore in this case be 18.3 per cent, due to the large part of water in the solution. The investigation during the winter period 1982-1983 are evaluated in the report. (TRRL)

Language

  • Swedish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00395497
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Jan 31 1986 12:00AM