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Pre-wetting refers to the
addition of liquid melting agents to salt or salt/abrasive mixes to
improve their melting capabilities at lower temperatures by lowering
their freeze point. Pre-wetting also helps the dry material stick to
the road so there is more melting. Generally, 5-15 gallons of liquid
is added per ton of dry material. Pre-wetting is accomplished through
the use of truck mounted tank/pump systems or by overhead spraying as
the truck is being loaded.
Reactive process of melting
accumulated snow/ice from road surface. Generally done with salt to
lower the freezing point of the snow/ice. Salt/abrasive mix is also
used to melt and provide temporary traction.
Proactive measure
of applying a chemical (e.g. Salt-Brine, Calcium Chloride or Liquid
De-icers) to a road surface prior to a storm to prevent snow/ice from
bonding to the pavement. Liquid amount generally applied is 15 to 70
gallons per lane mile.
Can refer to either pre-treating
the roads (Anti-icing) or pre-treating the salt with a liquid (Pre-wetting)
to enhance the melting process.
A 23% mixture of tap water
and rock salt. Salt-brine is generally made using a brine manufacturing
unit (see Salt/Brine Manufacturing).