Test To Check Soundness Of Cement

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SOUNDNESS
Soundness of cement is determined by Le-Chatelier method as per IS: 4031 (Part 3) – 1988.
Apparatus – The apparatus for conducting the Le-Chatelier test should conform to IS: 5514 – 1969
Balance, whose permissible variation at a load of 1000g should be +1.0g and Water bath.

soundness-of-cement-test

Procedure to determine soundness of cement
i) Place the mould on a glass sheet and fill it with the cement paste formed by gauging cement with 0.78 times the water required to give a paste of standard consistency.
ii) Cover the mould with another piece of glass sheet, place a small weight on this covering glass sheet and immediately submerge the whole assembly in water at a temperature of 27 ± 2oC and keep it there for 24hrs.
iii) Measure the distance separating the indicator points to the nearest 0.5mm (say d1 ).
iv) Submerge the mould again in water at the temperature prescribed above. Bring the water to boiling point in 25 to 30 minutes and keep it boiling for 3hrs.
v) Remove the mould from the water, allow it to cool and measure the distance between the indicator points (say d2 ).
vi) (d2 – d1 ) represents the expansion of cement.

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Comments
  • George Bass August 16, 2012 at 5:09 am

    To obtain a lasting structure 1 must ensure that the material use are sound {ENGRS}

  • IQBAL SAINI September 10, 2012 at 5:24 am

    write about rotatory kiln

  • mohit March 16, 2013 at 4:29 pm

    what should be the value of d1-d2 ?
    d1 – d2= ?

    • N pavan kumar April 18, 2013 at 3:27 am

      maximum 10mm

  • N pavan kumar April 18, 2013 at 3:22 am

    please give total information,insoundness of cement d2-d1 should not greater than 10 mm

  • Khandapu Rambabu July 10, 2014 at 10:09 pm

    The expansion of cement is due to presence of silicates of magnesium and calcium

  • Khandapu Rambabu July 11, 2014 at 5:13 am

    Should not be greater than 10mm

  • indu September 17, 2014 at 9:46 pm

    why water content should be 0.78 times p

  • Mukesh September 20, 2014 at 10:47 pm

    what is the value of d2-d1, as per IS. upto what values the cement is acceptable, and when it should be rejected. What will happen / How it will affect construction , when the values are not within permissible limits ?

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