What is the purpose of sprinkling salt in snow and ice weather?

After the snow falls, it is a process of continuous melting and solidification. Both of them are at the same speed and remain solid all the time! The composition of salt is sodium chloride and the composition of snow is water. The combination of the two forms a mixture of water and sodium chloride. Chlorine and sodium ions in it will destroy the crystal structure of water, and snow will not freeze again. After sprinkling salt, the water around the snow becomes salt water and will not solidify again. Snow will continue to melt and not solidify back, so there will be less and less snow on the road! But everything has two sides, and salt will corrode the road.

At present, due to the use of snow remover, that is, salt, the steel bars in the pavement, overpass and viaduct are oxidized, so a new polycarbonate substance is used to remove snow, so as to minimize the damage to the pavement.