Discussion :: Building Materials - Section 4 (Q.No.17)
| 17. | The cement becomes unsound by the presence of excess |
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Answer: Option D Explanation: No answer description available for this question.
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| 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. |
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| 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. |
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| Vipul said: (May 7, 2019) | |
| D is correct. I agree with the given answer. | |
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