Importance of Soundness Test of Cement

Soundness: The ability of cement to retain its   volume after it gets hardened is known as the Soundness of Cement. 

Once the cement mortar or concrete gets dried there should not be any alteration in volume. If any alteration in volume occur, it will allow the cement to inflate or contract which leads crack in dried cement paste or concrete.This type of cement called unsound cement.

As we know lime is the main composition ( about 60-70%) of cement.  The test conducted to calculate the excess quantity of lime in cement is called soundness test of cement.

   

  

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