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Flash set of ordinary Portland cement paste is ______.
- a)Premature hardening
- b)Surface hardening only
- c)Hardening without the development of heat of hydration
- d)All the options are correct
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Flash set of ordinary Portland cement paste is ______.a)Premature har...
If inadequate amounts of gypsum are added to the cement, a flash set can occur - rapid development of rigidity in freshly mixed Portland cement paste, mortar or concrete.
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A large amount of heat is produced in the process and it is the premature hardening of the cement.
Hence, the correct option is (A)
Most Upvoted Answer
Flash set of ordinary Portland cement paste is ______.a)Premature har...
Premature hardening is the correct answer.
Explanation:
Flash set is a phenomenon that occurs in ordinary Portland cement paste when it sets too quickly. This results in premature hardening of the paste. The problem with premature hardening is that it can lead to structural issues in the concrete.
When cement paste undergoes flash set, it hardens before it can be properly placed and finished. This can result in a rough and uneven surface. The setting process becomes difficult to manage, and the paste becomes unworkable.
Flash set occurs due to the presence of impurities in the cement or due to the presence of too much gypsum. These impurities can cause the paste to set too quickly.
Hardening without the development of heat of hydration or surface hardening only are not characteristics of flash set. Therefore, options (B) and (C) are incorrect.
In conclusion, flash set of ordinary Portland cement paste is premature hardening.
Explanation:
Flash set is a phenomenon that occurs in ordinary Portland cement paste when it sets too quickly. This results in premature hardening of the paste. The problem with premature hardening is that it can lead to structural issues in the concrete.
When cement paste undergoes flash set, it hardens before it can be properly placed and finished. This can result in a rough and uneven surface. The setting process becomes difficult to manage, and the paste becomes unworkable.
Flash set occurs due to the presence of impurities in the cement or due to the presence of too much gypsum. These impurities can cause the paste to set too quickly.
Hardening without the development of heat of hydration or surface hardening only are not characteristics of flash set. Therefore, options (B) and (C) are incorrect.
In conclusion, flash set of ordinary Portland cement paste is premature hardening.
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Flash set of ordinary Portland cement paste is ______.a)Premature hardeningb)Surface hardening onlyc)Hardening without the development of heat of hydrationd)All the options are correctCorrect answer is option 'A'. Can you explain this answer?
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