• AlternatePersonMan@lemmy.world
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    7 months ago

    I often wonder how much money Northern states would save on roads if it weren’t for the extreme temperature swings.

    Regularly hit highs over 100 in the summer, lows below -30 in the winter. That’s an awful lot of compression and expansion. Not to mention the abuse of heavy plows and their blades catching upheaved concrete.

      • jak@sopuli.xyz
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        7 months ago

        It’s actually too cold for salt to be reliable. Water fully saturated with salt freezes at ~-21/-6(c/f), so if it’s predictably getting colder than that, it’s a bad idea to use salt.

        Edit: They add beet juice when it’s really cold, but otherwise, it looks like they use salt :(

        • RedAggroBest@lemmy.world
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          7 months ago

          It’s salt but it’s not sodium cloride. It’s usually calcium cloride. That’s usually good to -30/-34 F/C.