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I'm not the expert on this as I live down South. But salt does nothing to snow or ice. It is only after the snow or ice melts and becomes water THEN the salt lowers the freezing point of the water(now a solution) so that it will not re-freeze. Salt could provide some traction when sprinkled on the ice just as sand would. It depends what kind of salt you are using. Ordinary Sodium Chloride sprinkled on ice will first steal energy when it dissolves, thus cooling the ice and increasing friction. Remember that ice isn't slippery at all, it is the water film on it that lubricates it. After it is dissolved however, it is true that it lowers the freezing point.

I believe the most common salt for salting roads is Calcium Chloride, and this behaves a little differently. I'm no expert on this salt, but I do drive on salted roads, and it seems to get right down to business and melt the ice. Perhaps it gives off heat when it dissolves.

But when salting roads it is never wise to salt snow. It is very important to clear as much of the snow as possible, because salted snow becomes a slush that is extremely slippery. == ==

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17y ago

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