refractory bricks first class bricks underburnt bricks overburnt bricks
Answer Discuss in Comment
equal to the size of a fully burnt brick smaller than the size of a fully burnt brick greater than the size of a fully burnt brick none of the above
it takes less time for burning it is suitable when bricks are required in large numbers it gives more output of first class bricks it has less initial cost
tetra calcium alumino ferrite tricalcium aluminate dicalcium silicate tricalcium silicate
dicalcium silicate tricalcium silicate tricalcium aluminate all of the above
10% 40% 30% 20%
100 mm 70.6 mm 50 mm 150 mm
50 mm to 100 mm 100 mm to 125 mm 25 mm to 50 mm 125 mm to 150 mm
ultimate stress yield stress proof stress none of the above
wood work iron work both wood work and iron work none of the above
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