Dear reader in the last post we have few idea about ice removal agents. We were on mechanism of damage of concrete with the application of ice removal agents.
There two types of pressures are developed which do the harm to concrete member. These pressures are:
A. Disruptive osmotic pressure
B. Hydraulic pressure
The pressures are developed mainly in paste, just like ordinary frost disintegration, but the degree of pressure is more severe.
These formations of pressures in the paste, is greatly influenced by concentration of ice removal agents. Here we are providing some observations concluded in the guide: ACI 201.2R; Guide to Durable Concrete.
Klieger and Verbeck in 1957 showed that when a concentration of moderate intensity is used in ponding concrete mass, a most severe scaling of concrete is observed. The moderate concentration means (3-4)%.
The above observations were conducted over four ice removal agents namely
a. Sodium chloride
b. Calcium chloride
c. Ethyl alcohol
Dear reader we will finish this topic in the next post of this blog where we will discuss other observations that are concluded in guideline.