Q. Main constituents of good brick earth is

A
Alumina
B
Lime
C
Iron oxide
D
Silica
Solution:
  • Brick earth is a type of soil that is ideal for making bricks.
  • Eventhough the main ingredient of brick is silica, the major constituent of good brick is Alumina.
  • Alumina acts as a cementing material in raw cement.
  • It prevents plasticity and makes brick harder.
  • Constituent of good brick earth is:
    • Silica 50-60%
    • Alumina 20-30%
    • Lime 4-5%
    • Iron oxide 5-6%
    • Magnesia 1%
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