What is Cement Gel in Concrete?

When water is added to cement, the chemical reaction starts, which is known as the hydration process, and it is exothermic.
About 23% of water is required for a chemical reaction to take place, and 15% of water is required for gel formation. This formed cement gel is made up of calcium silicate and hydrate (c-s-H), which is important in strength property of cement paste.
So ultimately, the strength of cement gel is an important part of gaining strength and durability.

Cement GEL; The Cement Gel in a cement is a Calcium Silicate Hydrate ( CSH), which is responsible for the strength and binding in the structures. It is produced when a hydration reaction occurs by mixing water and cement; the paste is formed is called as cement gel.