Brick - Methods of Manufacture

Methods of Manufacture

Modern clay bricks are formed in one of three processes – soft mud, dry press, or extruded.

Normally, brick contains the following ingredients:

  1. Silica (sand) – 50% to 60% by weight
  2. Alumina (clay) – 20% to 30% by weight
  3. Lime – 2 to 5% by weight
  4. Iron oxide – ≤ 7% by weight
  5. Magnesia – less than 1% by weight

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