July 16, 2024

SOUNDNESS TEST OF CEMENT

Apparatus Required

  • Le-Chatelier Apparatus
  • Weighing Balance
  • Water Bath

Procedure of the test

  1. Take 400gm of cement and find its standard consistency.
  2. Place the lightly oiled Le-Chatelier mould on a lightly oiled glass sheet.
  3. Prepare a cement paste by gauging cement with 0.78 times the water required to give a paste of standard consistency.
  4. Fill the Le-Chatelier mould with the prepared cement paste and cover the mould with anather piece of lightly oiled glass sheet.
  5. Place a small weight on the covered glass sheet and immediately submerse the whole arrangement in water bath at a temperature of 27+/- 2oC and keep it there for 24 hours.
  6. After 24 hours remove the mould from water bath and measure the distance between the indicators to the nearest of 0.5mm, record as initial distance.
  7. Again submerse the mould in water bath at a temperature of 27+/- 2oC.
  8. Bring the water to boiling temperature in 25-30 minutes and keep it boiling for 3hours.
  9. Remove the mould from water bath, allow it to cool and measure the distance between the indicators of the mould to the nearest of 0.5mm, record as final distance.
  10. The difference between the two measurements i.e step (6) and step (9), represents the expansion of the cement.

Datasheet for soundness test of cement

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