Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 1 (Q.No. 10)
10.
In the cement the compound quickest to react with water, is
Discussion:
33 comments Page 3 of 4.
Karun said:
7 years ago
I think C4AF is the right one because it reacts instantly with water where C3A produces the highest heat of hydration so it sets quickly and produces volume Change.
Yasir said:
7 years ago
Tricalcium aluminate results into flash setting of cement and in order to prevent flash setting Gypsum is added.
Sumant said:
8 years ago
C4af is involve first in rate of hydration.
Ram said:
8 years ago
C3A is characteristically fast reacting with water and may lead to an immediate stiffening of paste and this process is termed as a flash set. The role of gypsum added in the manufacture of cement is to prevent such a fast reaction.
Ravinder Poonia said:
8 years ago
Yes, the correct answer A. I agree.
Parameshwar said:
8 years ago
C3a qukist react btt c3s fst react with water.
Jitendra said:
8 years ago
The Rate of hydration is more for C4AF then how C3A react first?
Shashank tyagi said:
10 years ago
It is not di calcium silicate its tri calcium aluminate because it has highest affinity toward water and generate more heat about 809 kJ/kg more than C2S.
It react with h2o to form false set rich hinder other strength giving reaction. That hy gypsum is added to react it c3a to form tranzite.
It react with h2o to form false set rich hinder other strength giving reaction. That hy gypsum is added to react it c3a to form tranzite.
Sanjay said:
1 decade ago
Definitely its di-calcium silicate not tri-calcium aluminate.
Podi wije said:
1 decade ago
What about tetracalcium alumino ferrite C4AF?
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