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Abstract:In the Summer and Fall of 2006, the Maine Department of Transportation (MaineDOT) began a retrofitting
process on six of their conventional salt spreaders. MaineDOT contracted with H.P Fairfield of
Skowhegan, Maine to complete this work.
The intent of the retrofit
was to modify the spreaders to allow for a 70 percent granular salt/30
percent salt brine application. MaineDOT’s previous experience with the SchmditSTRATOS
Spreader
(Report Available – Evaluation of the SchmidtSTRATOS
Spreader, July 2005), which is manufactured
in Germany, showed much promise using this combination of materials. Preliminary results from the
STRATOS spreader evaluation indicated that the potential for material and monetary savings exists when
using the 70/30 mixture. The theory behind significantly increasing the amount of liquid used to treat the
granular salt is that the salt begins reacting faster with the presence of additional liquid and the material
stays on the roadway better with the increased saturation.
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