Does putting a liquid on a cold road just freeze to the road?
Brine does have a lot of water in it. For example, sodium chloride brine is typically 23.3% sodium chloride when it is applied. That means that it is 76.7% water. But, the salt is in a solution in the water, and that solution has a lower freezing point than pure water, as noted earlier. In particular, when salt brine is applied at a 23.3% concentration, it will freeze (without any additional dilution) at about -6° F. Unless the road surface is extremely cold, the brine will not freeze to the road. Of course, as it melts snow and ice, it becomes more diluted and—unless additional treatments are made or the road is cleared of snow and ice by plowing— the road will refreeze eventually. But the short answer to this question is NO – the brine will not freeze on the road when it is applied.