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Questions and Answers
What are the primary ingredients used to produce concrete?
What are the primary ingredients used to produce concrete?
- Coarse and fine aggregates, portland cement, and water (correct)
- Portland cement, limestone, and clay
- Gravel, sand, and gypsum
- Marble, iron, and bauxite
What is the function of gypsum in the production of portland cement?
What is the function of gypsum in the production of portland cement?
- Increase the setting time of the cement
- Aid in the grinding process of the clinker
- Act as a retardant during the concrete curing process (correct)
- Enhance the strength of the cement
What is the temperature range for conducting the selected cement constituents through a rotating kiln?
What is the temperature range for conducting the selected cement constituents through a rotating kiln?
- 1800 to 2000 degrees Fahrenheit (980 to 1090°C)
- 3200 to 3500 degrees Fahrenheit (1760 to 1930°C)
- 2200 to 2500 degrees Fahrenheit (1200 to 1370°C)
- 2600 to 3000 degrees Fahrenheit (1400 to 1650°C) (correct)
What is the role of lime in the manufacturing of portland cement?
What is the role of lime in the manufacturing of portland cement?
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What is the purpose of adding slag or flue dust from iron furnaces in the manufacturing of portland cement?
What is the purpose of adding slag or flue dust from iron furnaces in the manufacturing of portland cement?
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