Discussion :: Building Materials - Section 4 (Q.No.17)
The cement becomes unsound by the presence of excess
Answer: Option D
No answer description available for this question.
|Dev said: (Dec 26, 2016)|
|It is Free lime.|
|Ganesh said: (Apr 4, 2017)|
|Please give me exact answer with the explanation.|
|Jiren said: (Jul 19, 2017)|
|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.
|Deepakrawat said: (Aug 5, 2017)|
|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.
|Vipul said: (May 7, 2019)|
|D is correct. I agree with the given answer.|
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