Winter season brings alot of excitement plus it also brings troubles with itself. Like one major problem during snowfall is that roads get blocked by a dump of snow which makes driving difficult, even if your municipal dozer tucks its job regularly. A solution for such problem was made that you simply add up some salt to the ice that will melt on combining with ice and there you go your roads and bridges are clear for you.
Now what if your solution gets miserable for your life? Well it happens then. Since the water and salt have an ionic reactions. There is an extra electro which do not participate in reaction from every bond. This free electron reacts with the environment, mostly the free electron react with the steel of the bridge which makes problems like rusting and eventually with the time you are making it more worst by adding on salt. The result is known that the bridge would collapse after the rusting of critical parts of bridge and it will cause catastrophe and damage to other structures of lives.
A solution of this problem is to add some additives that had been developed over past few years. But again the problem is their high cost and more over their damage to the environment in other ways, like many of them release phosphorus etc. So the best solution gain out was the addition of sugars that actually slow down the corrosion action and your structure life is maintained over a long period. This proved to be a better way and more economical as well.