I watched a show on my Sat unit - the salt in the north is
different than in the south - different 'salt' not sodium-cloride
calcium..... They showed tall stacks of a brownish 'salt' (a large
family of chemicals) and stated they normally served the western states
as needed but now since the supplies were short in the East, they were
looking for rail cars to haul the salt to the East in the volume they need.

Learned there is a good ole bunch of chemical sets used.

Martin

On 2/8/2014 1:07 PM, wrote:
On Sat, 08 Feb 2014 07:20:04 -0600, Markem
wrote:

On Fri, 07 Feb 2014 19:08:13 -0500, wrote:

On Fri, 07 Feb 2014 08:42:51 -0600, Markem
wrote:

On Thu, 06 Feb 2014 22:02:21 -0500, wrote:

I've heard that but brine is just water and salt. Not sure what the
advantage of that when it's too cold for salt to work at all.

The brine is sprayed before it snows on the roads, leaving a coating
on the road.

If it's sodium salt brine, it will help "black ice" or in the first
hour or so of a snowstorm. At very low temperatures, it's not going
to do anything at all. Well, it will make the roads slick as snot as
it freezes into a nice uniform layer. ;-)

Do not know what the mix is but it is not just sodium chloride. Your
in theory work is not need actually, as IDOT here seems to have done
the work and it works.
Brining the road helps keep the snow/ice from sticking to the
pavement, making ploughing easier, and also helps prevent icing before
snow accumulates.