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nakul sharma

· started a discussion

· 1 Months ago

50% answersare wrong (Question: 333552.0 )

wrost test series

Question:

Which of the following compound undergoes hydration within a week?

Options:
A)

C4AF

B)

C3A

C)

C2S

D)

C3S

Solution:

Ans: (d)

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

Hydration starts as soon as the cement and water are mixed.

Tricalcium silicate (C3S). Hydrates and hardens rapidly and is largely responsible for initial set and early strength.

Tricalcium aluminate (C3A). Hydrates and hardens the quickest. Liberates a
large amount of heat almost immediately and contributes somewhat to early
strength. Gypsum is added to Portland cement to retard C3A hydration. Without
gypsum, C3A hydration would cause Portland cement to set almost immediately
after adding water.

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