Which of the following does not occur during firing/burning of refractories ?
Correct answer: C. Decrease in crushing strength
- A. Removal of water of hydration
- B. Vitrification
- C. Decrease in crushing strength
- D. Development of stable mineral form
Explanation
Firing removes hydration water, promotes vitrification, and develops stable mineral phases; it normally increases rather than decreases crushing strength. Thus, a decrease in crushing strength does not normally occur.
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