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The Indian standard IS 6250

The Indian standard was published in 1981 and comprises the following topics:

  • Requirements for dimensions and evenness
  • Determination of the bending strength
  • Determination of the water absorption
  • Determination of the permeability (in this case "impermeability")
  • Wetting-drying cycles for the determination of the weathering resistance
  • Determination of the resistance to sulphuric acid

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