The maximum linear expansion of silica bricks during firing is about ______________ percent?
Correct answer: D. 3.5
- A. 0.5
- B. 1
- C. 2
- D. 3.5
Explanation
Silica bricks undergo a comparatively large irreversible expansion during firing because quartz transforms into higher-volume crystalline forms. The expansion is approximately 3.5%.
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