Grog addition in fireclay during brick manufacture is done to Options: A . &nbspReduce its shrinkage on heating B . &nbspImpart greater spalling resistance C . &nbspEnhance the strength of fired refractories D . &nbspAll of the above

Grog addition in fireclay during brick manufacture is done to

Question

Grog addition in fireclay during brick manufacture is done to

Options:

A . Reduce its shrinkage on heating

B . Impart greater spalling resistance

C . Enhance the strength of fired refractories

D . All of the above

Answer: Option D

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Question 1. The maximum linear expansion of silica bricks during firing is about __________ percent.....

Question 2. The highest melting pure oxide (m.p. > 3000°C) is....

Question 3. With increase in the porosity, thermal spalling resistance of fireclay brick....

Question 4. Ganister is a source of the....

Question 5. Use of higher percentage of lime for bonding silica bricks, reduces their....

Question 6. Chrome magnesite bricks are used in the....

Question 7. Faster rate of drying of moulded refractories results in high __________ of refractories.....

Question 8. Grog....

Question 9. Refractories used in/for __________ should have low thermal conductivity.....

Question 10. Panel test determines the __________ of refractories.....

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