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As the hydration proceeds the deposits of hydrated products on the original cement grains makes the diffusion of water to unhydrated nucleus ________

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As the hydration proceeds the deposits of hydrated products on the original cement grains makes the diffusion of water to unhydrated nucleus ________

(a) Easy

(b) Very difficult

(c) Very easy

(d) Average

The question was asked by my school principal while I was bunking the class.

The query is from Hydration of Cement in portion Cement of Concrete Technology

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Right option is (b) Very difficult

For explanation: It is difficult thus the rate of hydration decreases with time & as result hydration may take several years.

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