With increase in the porosity, thermal spalling resistance of fireclay brick___________________?
Correct answer: A. Increases
- A. Increases
- B. Decreases
- C. Remain same
- D. May increase or decrease
Explanation
Greater porosity generally improves thermal-spalling resistance because it lowers thermal conductivity and provides void space to relieve thermal stresses. The trade-off is reduced mechanical strength.
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