Tests on Cement and Concrete Mixes

Density

Code: This is done as per (IS: 4031-Part 11-1988).

Test Procedure:

• i) Dry the Le-Chatelier flask and fill with kerosene oil or Naptha to a point on the stem between 0 and 1 ml.
• ii) Dry the inside of the flask above the level of the liquid.
• iii) Immerse the flask in a constant temp water bath maintained at room temp for sufficient time.
• iv) Record the level of the kerosene oil in the flask as initial reading.
• v) Introduce about 60 g of cement into the flask so that the level of kerosene rises to about say 22 ml mark. Splashing should be avoided and cement should not be allowed to adhere to the sides of the flask above the liquid.
• vi) Insert the glass nipple into the flask and roll it gently in an inclined position to free the cement from air until no further air bubble rises to the surface of the liquid.
• vii) Keep the flask again in constant temp water bath and note down the new liquid level as final reading.

Uses:

To determine the density of cement.