- 2078 Bhadra · 1 mark
Why hydration of cement takes place
Short answer
Hydration takes place because anhydrous cement compounds (C3S, C2S, C3A, C4AF) are chemically unstable in water. They react to form stable, insoluble calcium silicate hydrate gel and calcium hydroxide, which set and harden, providing binding strength.
Why does hydration of cement take place?
Hydration takes place because the anhydrous compounds of cement (C3S, C2S, C3A, C4AF) are chemically unstable in the presence of water. They react with water to form stable, insoluble hydrated products (mainly calcium silicate hydrate, C-S-H gel, and calcium hydroxide), which set and harden and give cement its binding strength. The reaction is exothermic and continues as long as water and unhydrated cement are available.
✓ Answer checked by Claude Opus 5.5 (high effort)
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