Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 1 (Q.No. 39)
39.
The high strength of rapid hardening cement at early stage, is due to its
Discussion:
54 comments Page 2 of 6.
Ghulam Nabi said:
6 years ago
All the difference of rapid hardening cement to that of ordinary portland cement is the quantity of lime stone (tri-calcium silicate) used as raw material, which gives the high early strength to the cement.
MARI said:
6 years ago
Option D is correct. Because early strength (i.e) the first 7 days strength depends upon tricalcium silicate. But we have the only option to increase the calcium content by increase the lime cement.
M.Pagavandoss said:
1 decade ago
For rapid hardening cement -cement has to grind finer its surface area not less than 3,25000 sqmm. So answer A is correct.
If we increased the lime content the initial setting time also increase.
If we increased the lime content the initial setting time also increase.
Sniper said:
4 years ago
1st option along with 2nd option gives high strength at an early stage.
In Option D it is given tricalcium only. Not C3S.
Thus Option C is the correct answer.
In Option D it is given tricalcium only. Not C3S.
Thus Option C is the correct answer.
Nitin said:
6 years ago
The heat of hydration increased by c3s content increased so early strength develop and if fineness of cement increases with an increase in strength.
Manish bairagi said:
9 years ago
Early strength of RHC is mainly due to fine grinding and more content of C3S but for single purpose. What is the correct option b/w these two?
Ali said:
4 years ago
Finer grinding and tricalcium aluminate C3A causes rapid hardening.
While early strength is given to the cement by tricalcium silicate C3S.
While early strength is given to the cement by tricalcium silicate C3S.
(2)
Prakash said:
4 years ago
Rapid hardening cement has greater strength in early stage as compared to opc. This is due to the extra amount of lime. So C is correct.
Shaveer said:
4 years ago
Can anyone explain, why we have a higher level of strength requirements for PCC compared to OPC at an early age (3 days and 7 days)?
Agha Bilal said:
1 month ago
The early strength of "cement"~ fine grinding.
The early strength of "RHC"~ increased lime cement.
So, the given answer is correct.
The early strength of "RHC"~ increased lime cement.
So, the given answer is correct.
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