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Gypsum is added to cement clinker to
- a)increase the tensile strength of cement
- b)decrease the rate of setting of cement
- c)facilitate the formation of colloidal gel
- d)bind the particles of calcium silicate
Correct answer is option 'B'. Can you explain this answer?
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Gypsum is added to cement clinker toa)increase the tensile strength of...
Explanation:
The addition of gypsum to cement clinker is important for the following reasons:
1. Slowing down the rate of setting of cement: Gypsum is added to the cement clinker to slow down the rate of setting of cement. This is because the addition of gypsum delays the hydration of the C3A phase in the clinker, which is responsible for the initial setting of cement. Gypsum reacts with the C3A phase to form insoluble calcium sulfoaluminate hydrate, which slows down the rate of setting of cement. This is important because it allows sufficient time for the cement to be transported, placed, and compacted before it sets.
2. Facilitating the formation of colloidal gel: Gypsum also acts as a retarder and facilitates the formation of a colloidal gel-like structure in the cement paste. This gel-like structure helps to improve the workability of the cement and makes it easier to handle and place.
3. Improving the strength of cement: Gypsum also contributes to the strength of cement. This is because the addition of gypsum enhances the formation of calcium silicate hydrate, which is the primary binding agent in cement. This, in turn, improves the strength of the cement.
Conclusion:
In summary, the addition of gypsum to cement clinker is important for slowing down the rate of setting of cement, facilitating the formation of a colloidal gel-like structure, and improving the strength of cement.
The addition of gypsum to cement clinker is important for the following reasons:
1. Slowing down the rate of setting of cement: Gypsum is added to the cement clinker to slow down the rate of setting of cement. This is because the addition of gypsum delays the hydration of the C3A phase in the clinker, which is responsible for the initial setting of cement. Gypsum reacts with the C3A phase to form insoluble calcium sulfoaluminate hydrate, which slows down the rate of setting of cement. This is important because it allows sufficient time for the cement to be transported, placed, and compacted before it sets.
2. Facilitating the formation of colloidal gel: Gypsum also acts as a retarder and facilitates the formation of a colloidal gel-like structure in the cement paste. This gel-like structure helps to improve the workability of the cement and makes it easier to handle and place.
3. Improving the strength of cement: Gypsum also contributes to the strength of cement. This is because the addition of gypsum enhances the formation of calcium silicate hydrate, which is the primary binding agent in cement. This, in turn, improves the strength of the cement.
Conclusion:
In summary, the addition of gypsum to cement clinker is important for slowing down the rate of setting of cement, facilitating the formation of a colloidal gel-like structure, and improving the strength of cement.
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Community Answer
Gypsum is added to cement clinker toa)increase the tensile strength of...
During the cement manufacturing process, upon the cooling of the clinker, a small amount of gypsum is introduced during the final grinding process. Gypsum is added to control the setting of cement.
If not added, the cement will set immediately after mixing water leaving no time for concrete placing. Hence, the addition of gypsum is required to decrease the rate of setting.
Hence, option (B) is correct.
If not added, the cement will set immediately after mixing water leaving no time for concrete placing. Hence, the addition of gypsum is required to decrease the rate of setting.
Hence, option (B) is correct.
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Gypsum is added to cement clinker toa)increase the tensile strength of cementb)decrease the rate of setting of cementc)facilitate the formation of colloidal geld)bind the particles of calcium silicateCorrect answer is option 'B'. Can you explain this answer?
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Gypsum is added to cement clinker toa)increase the tensile strength of cementb)decrease the rate of setting of cementc)facilitate the formation of colloidal geld)bind the particles of calcium silicateCorrect answer is option 'B'. Can you explain this answer? for Current Affairs 2024 is part of Current Affairs preparation. The Question and answers have been prepared according to the Current Affairs exam syllabus. Information about Gypsum is added to cement clinker toa)increase the tensile strength of cementb)decrease the rate of setting of cementc)facilitate the formation of colloidal geld)bind the particles of calcium silicateCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Current Affairs 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Gypsum is added to cement clinker toa)increase the tensile strength of cementb)decrease the rate of setting of cementc)facilitate the formation of colloidal geld)bind the particles of calcium silicateCorrect answer is option 'B'. Can you explain this answer?.
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