According to the sources, the salt itself doesn't cause melting. "When water is mixed with salt the freezing temperature of the solution is lower than 32 F. Th

According to the sources, the salt itself doesn't cause melting. "When water is mixed with salt the freezing temperature of the solution is lower than 32 F. The salt impedes the ability of the water molecules to form solid ice crystals. It’s important to note that the salt must be in a solution with liquid water in order for this principle to be obeyed. Salt that’s dumped on top of ice relies on the sun or the friction of car tires driving over it to initially melt the ice to a slush that can mix with the salt and then won’t refreeze." https://www.scientificamerican.com/article/salt-doesnt-melt-ice-heres-how-it-makes-winter-streets-safer/ https://www.scientificamerican.com/article/salt-doesnt-melt-...