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For the manufacture of Portland cement, the proportions of.raw materials used are
- a)Lime 63%, silica 22% and others 15%
- b)Lime 70%, silica 20% and others 10%
- c)Lime 40%, silica 40% and others 20%
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
For the manufacture of Portland cement, the proportions of.raw materia...
Lime(CaO)---> 60-67%.
Silica(SiO2)---> 17-25%.
Aluminium(Al2O3)---> 3-8%.
Iron oxide (Fe2O3)---> 0.5-6%.
Magnesia(MgO)---> 0.1-4%.
Sulphur trioxide (SO3)---> 1-2%.
Soda and potash (Na2O+K2O)---> 0.5-1.3%.
Gypsum (CaSO4.2H2O)---> 3-4%.
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For the manufacture of Portland cement, the proportions of.raw materia...
Explanation:
The manufacture of Portland cement requires specific proportions of raw materials, including lime, silica, and others. The correct proportions are:
a) Lime 63%, silica 22% and others 15%
This means that for every 100 units of raw materials used, 63 units should be lime, 22 units should be silica, and 15 units should be other materials.
The reason for these specific proportions is to ensure that the final product has the desired properties. Lime provides the necessary calcium oxide, while silica provides the necessary silicon dioxide. Other materials may include iron oxide, alumina, and other minerals.
The raw materials are typically crushed and blended together before being heated in a kiln at high temperatures. This process causes chemical reactions to occur, ultimately resulting in the formation of clinker. The clinker is then ground into a fine powder, which is the Portland cement.
Overall, the correct proportions of raw materials are critical to the production of high-quality Portland cement. By using the correct proportions, manufacturers can ensure that the final product has the necessary strength, durability, and other properties.
The manufacture of Portland cement requires specific proportions of raw materials, including lime, silica, and others. The correct proportions are:
a) Lime 63%, silica 22% and others 15%
This means that for every 100 units of raw materials used, 63 units should be lime, 22 units should be silica, and 15 units should be other materials.
The reason for these specific proportions is to ensure that the final product has the desired properties. Lime provides the necessary calcium oxide, while silica provides the necessary silicon dioxide. Other materials may include iron oxide, alumina, and other minerals.
The raw materials are typically crushed and blended together before being heated in a kiln at high temperatures. This process causes chemical reactions to occur, ultimately resulting in the formation of clinker. The clinker is then ground into a fine powder, which is the Portland cement.
Overall, the correct proportions of raw materials are critical to the production of high-quality Portland cement. By using the correct proportions, manufacturers can ensure that the final product has the necessary strength, durability, and other properties.
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For the manufacture of Portland cement, the proportions of.raw materia...
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For the manufacture of Portland cement, the proportions of.raw materials used area)Lime 63%, silica 22% and others 15%b)Lime 70%, silica 20% and others 10%c)Lime 40%, silica 40% and others 20%d)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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For the manufacture of Portland cement, the proportions of.raw materials used area)Lime 63%, silica 22% and others 15%b)Lime 70%, silica 20% and others 10%c)Lime 40%, silica 40% and others 20%d)None of the aboveCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about For the manufacture of Portland cement, the proportions of.raw materials used area)Lime 63%, silica 22% and others 15%b)Lime 70%, silica 20% and others 10%c)Lime 40%, silica 40% and others 20%d)None of the aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the manufacture of Portland cement, the proportions of.raw materials used area)Lime 63%, silica 22% and others 15%b)Lime 70%, silica 20% and others 10%c)Lime 40%, silica 40% and others 20%d)None of the aboveCorrect answer is option 'A'. Can you explain this answer?.
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