The kinetics of cement hydration is defined as the rate at which cement particles react with water to form calcium silicate hydrates and other compounds, which leads to the hardening of concrete.
The Process of cement hydration depends on:
- Rate of dissolution of the involved phases of cement in the initial stage and at later stages.
- Rate of nucleation and crystal growth of hydrates
- Rate of diffusion of water and dissolved ions through the hydrated materials already formed.
The condition to increase hydration are:
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Temperature
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Higher specific surface
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Impurities in water
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