Sunday, August 25, 2013

Why is salt added to remove ice

So you happen to have a driveway that is covered with a
few inches of ice and you didn't invest in a pick or anything to break it up.  No way
can you get rid of it with your snow shovel...  One of the things that people often
employ to help ride themselves of this problem is salt.  The reason why it works is that
it actually lowers the freezing point of ice so that it will melt, even if it is
actually below the normal freezing point outside.


Obviously
it is also used heavily on roads and in other public places as it is easily spread and a
relatively inexpensive way to slow down accumulation of frozen preciptation or to help
what is on the ground melt.


Of course it is important to
note that as the temperature starts to dip below 20 degrees fahrenheit, the
effectiveness of salt drops very rapidly.

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