Determination Of Specific Gravity Of Cement

STANDARD

  • IS: 4031- 1988.

DEFINITION

  • Specific Gravity is defined as the ratio of the mass of the cement to the mass of an equal volume of  Kerosene.

APPARATUS

  • Standard Le- Chatelier flask 250 ml capacity
  • Balance of capacity 500 gm and sensitivity to 0.01 grams.

PROCEDURE

  •  Clean and dry the Le- chatalier flask.
  • Fill the flask with kerosene exactly up to the zero graduation.
  • Take approximately about 70 grams of cement and pour it into the flask.
  • Shake well until no air bubbles are visible in the flask.
  • Allow the cement in the flask to settle down completely, preferably 24 hours.
  • Note the volume of kerosene read from the flask.
  • Make at least two determinations for each test.

CALCULATIONS

  • Specific Gravity = (Weight of cement / Volume of kerosene read from the flask)

REPORT

  • Report the individual and the mean results to the nearest second decimal.

PRECAUTION

  • Care shall be taken to avoid loss while pouring the cement in to the flask.

DETERMINATION OF SPECIFIC GRAVITY
IS: 4031-1988

Description Units Test I Test 2
Actual test temperature ° C
Weight of cement gms
Volume of kerosene read from the flask after 24 hours ml
Weight of cement Specific Gravity
Volume of kerosene read from the flask
Average Specific Gravity
Remarks:

Specific Gravity of Cement – Excel Performa

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