Quality of building sand for construction

  1. The sand may be naturally occurring like river sand, pit sand or offshore sand.
  2. All sand types shall be hard, durable, clean and free from adherent coatings such as clay.
  3. It must be free of dangerous substances such as pyrites, salts, coal or other organic impurities, mica, shale, or similar laminated materials, as well as flaky or elongated particles in amounts or forms that could negatively impact the motor's strength, durability, or hardness.

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