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Question:

Why not mix cement with limestone gypsum

Why not mix cement with limestone gypsum

Answer:

Cement is a kind of hydraulic material, under the condition of wet cement and water to produce hydration reaction, the formation of hydrated calcium silicate, such as a series of hydration products, and then crystallization, formation of cement stone structure and hardening. Without water, the hydration of cement can not be carried out, it can not produce strength.
Gypsum is also a hard material, and the role of water through the dissolution - crystallization - dehydration - the formation of crystalline structure - hardening process in the water can not harden.
Lime is a kind of hard material, and the lime reacts with water to produce calcium hydroxide. It takes off water to produce a large number of crystals to form a solid structure.

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