Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 4 (Q.No. 17)
17.
The cement becomes unsound by the presence of excess
Discussion:
5 comments Page 1 of 1.
Dev said:
9 years ago
It is Free lime.
Ganesh said:
8 years ago
Please give me exact answer with the explanation.
Jiren said:
8 years ago
The lime in excess makes the cement unsound and causes the cement to expand and disintegrate.
This ingredient, if present in small amount, imparts hardness and colour to the cement. A high content of magnesia makes the cement unsound.
A very small amount of sulphur is useful in making sound cement. If it is in excess, it causes the cement to become unsound.
This ingredient, if present in small amount, imparts hardness and colour to the cement. A high content of magnesia makes the cement unsound.
A very small amount of sulphur is useful in making sound cement. If it is in excess, it causes the cement to become unsound.
Deepakrawat said:
8 years ago
Soundness due to the lime is measured in Le-Chaltier's apparatus.
Soundness due to magnesia is measured in auto clave test.
Soundness due to sulphur can't be measure.
Soundness due to magnesia is measured in auto clave test.
Soundness due to sulphur can't be measure.
(2)
Vipul said:
6 years ago
D is correct. I agree with the given answer.
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