LIQUID TREATMENTS OF COMMERCIAL CALCIUM CHLORIDE IN WINTER ROAD MAINTENANCE

TWO EXPERIMENTS ARE DESCRIBED USING LIQUID SOLUTIONS OF A COMMERCIAL CALCIUM CHLORIDE TYPE 77-80, ON HIGHWAY 26 AND HIGHWAY 26 EXPRESS FROM THE MONT BLANC TUNNEL IN THE AOSTA VALLEY AND ON HIGHWAY 242 TO GARDENA VALLEY ON THE OCCASION OF THE 1970 MONDIAL SKI CHAMPIONSHIP. THESE EXPERIMENTS WERE PRECEDED BY A METEOROLOGIC STUDY, IN WHICH THE ROAD WAS DIVIDED INTO 3 PARTS CORRESPONDING TO 3 DIFFERENT ALTIMETRICAL BELTS FROM SOME HUNDREDS OF METERS TO 1,400 M ELEVATION AT THE ENTRANCE OF THE TUNNEL ON THE ITALIAN SIDE. THE TOTAL ANNUAL AVERAGE SNOWFALL FORECAST WAS 170 CM. FOR ONE EXPERIMENT, A 15-KM SECTION WAS CHOSEN BETWEEN THE TUNNEL AND MORGEX WHERE, EVEN IF THE SLOPE IS NOT EXCESSIVE, CARS MUST HAVE CHAINS OR CAMION TIRES.THE AMOUNTS USED WERE OF 10 GR/SQUARE M IN THE PREVENTIVE TREATMENTS AND 40 GR/SQUARE M IN THE MAINTENACE TREATMENTS. THE NUMERICAL RATIO AMONG THESE TYPES OF TREATMENTS WAS, ON THE AVERAGE, 1 TO 3. ALSO DESCRIBED IS THE GARDENA VALLEY EXPERIMENT AND THE MODIFICATIONS MADE TO THE EQUIPMENT. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 156-171
  • Monograph Title: Snow removal and ice control research
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00218687
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Feb 12 1971 12:00AM