Proceedings of the Congress

WS 4.5 Liquid de-icers and residual salt

Wednesday, February 9 08:00 - 09:30 (Calgary)

GMT : 02/09| 15:00 - 16:30 Paris : 02/09| 16:00 - 17:30 New Delhi : 02/09| 20:30 - 22:00 Tokyo : 02/10| 00:00 - 01:30 Sydney : 02/10| 02:00 - 03:30

Chair: Martin THOMSON, member of TC 3.2 of PIARC, UK

Winter service evolves over the years with ongoing development and research. This topic covers all subjects concerning innovation in techniques and technologies in winter service. New techniques such as application of de-icers and anti-icers, improvement in the use of abrasives, snow and ice clearance procedures and methodologies and sustainable and adaptive maintenance procedures are one part. But also new technologies like new snow and ice clearing equipment, automation of snow and ice control, new or alternative chemicals or materials and sustainable products or equipment are developed. Brine (sodium chloride solution) has become a good alternative to pre-wetted salt as it allows a reduction of the amount of salt used. The rising use of brine makes brine production important in winter service. After spreading salt onto the road, either dry, pre-wetted or in form of brine, a certaion amount sticks on the road surface. For further decisions, it is necessary to know how much residual salt still is on the roads. This session is about production of brine, use of liquid de-icers and how to measure residual salt.

  1. Welcome and session introduction
  2. Presentations
  3. Video
  4. Questions and Answers
  5. Conclusion

Welcome and session introduction

• Martin THOMSON 


Brine production systems for sustainable winter services
• Mr. Franz Goetzfried, Salt Research & Consulting, Germany 

Tests of alternative liquid spreading materials
• Mr. Peter Nutz, City of Vienna, Austria 

Residual Salt and Winter Road Maintenance – a Way to Save Salt, Environment and Money
• Mrs Anna Arvidsson, VTI, Sweden 

Development and test operation of On-Vehicle Residual Salt Sensor System which measures the salinity continuously on dry expressway
• Mr Yutaka Suya, Yamada Giken Co., Ltd., Japan


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Questions and Answers

• Martin THOMSON


• Martin THOMSON  

Session Organiser: Martin THOMSON
Session Secretary: Zoltan PASZTOR, TC 3.2 member, Hungary