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Salt and snow reaction

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thejackal1177
Posts: 3434 - Karma: 2,724
So whats the real deal ive heard many people say it melts snow and yet they always use it to consolidate the snow in spring so does any one know for sure?
Nov 26 2005 10:56AM
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crooks
Posts: 14693 - Karma: 786
no it keeps the snow from melting
Nov 26 2005 10:59AM
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QuazBotch
Posts: 3908 - Karma: 216
That why the dump it on roads after a storm, right?

For consolidating snow, they might be doing it to melt a thin layer at the top so that it freezes into ice when the temperature drops again.
Nov 26 2005 11:06AM
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watchmefall15
Posts: 1902 - Karma: 11
it turns the snow into ice if u just add a little but if u dump 10 punds of rock salt on the roads then ya it melts it
Nov 26 2005 11:11AM
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crooks
Posts: 14693 - Karma: 786
they do it for traction
Nov 26 2005 11:15AM
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Sharpy
Posts: 7596 - Karma: 19
they dump sand for traction, salt for melting, but a little bit of salt hardens the snow up because it melts it a little then the snow freezes and is more ice-like
Nov 26 2005 11:17AM
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skimasterflex
Posts: 2064 - Karma: 16
^that way they can turn a mushy inrun and lip into something you can get enough speed on to clear something.
Nov 26 2005 11:29AM
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bueyan
Posts: 1092 - Karma: 34
there are different kinds of salt with different chemicals...
Nov 26 2005 11:48AM
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cmo
Posts: 2325 - Karma: 1,085
ok salt lowers the melthing point of snow down to around 22 F i think i may be wrong. but so that way the snow abviously melts a lot easier, but when they use it at resorts and stuff it melts the top layer than the stuff that melts than turns into ice.
Nov 26 2005 11:55AM
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pmills
Posts: 7162 - Karma: 59
by throwing a little down, it melts a bit of the snow, but there is enough snow there to refreeze the melted snow holding it together. sometime you can put a string on an icecube, and some salt on the icecube, then after a bit, the ice will have melted, refroze and you can pick up the icecube with the string. OR if you're more of a hands on person, put some salt on an icecube and put it on your skin for some frostbite.
Nov 26 2005 11:56AM
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lyndon
Posts: 7266 - Karma: 127
no, sand is for traction. the ice raises the melting point, and the snow re-freezes, causing it to harden faster, therefore melting slower.
Nov 26 2005 12:02PM
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Kev
Posts: 7411 - Karma: 35
Alright.
Sand is for tracktion.

Salt lowers the freezing/melting point of water, and the idea is to take advantage of the lower melting point.
The salt dissolves into the liquid water in the ice and lowers its freezing point.

Salt needs to get into the water struture for it to work, this is why sometimes when it's really really cold out, salt doesn't do anything. (another reason why people use sand in some cases)

And people put it on jumps, and inruns so that it dissolves the snow a little (because the freezing point is now lower)
and then re freezes and hardens.

This usually doesn't happen on the street because there is only a thinner layer of snow at is all dissolves, but in our case using it on a jump or inrun, it can't dissovle everything cause there's too much snow.

Yippie.
Nov 26 2005 1:09PM
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JIB_NISSE
Posts: 833 - Karma: 28
salt acts as an impurity and weakens the structure of the snow, lowering its m.p and b.p
Nov 26 2005 1:34PM
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SteezePatrol
Posts: 10281 - Karma: 36
ices up the base.

nuff said
Nov 26 2005 2:47PM
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