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Q: How is the Le- Chatelier apparatus used in the Soundness Test?
  • A. To measure the extension of a standard specimen
  • B. To calculate the normal consistency of cement paste
  • C. To assess the compressive strength of concrete
  • D. To determine the quantity of water required for mixing
Correct Answer: Option A - It is essential that the cement concrete does not undergo changing volume after setting. This is ensured by limiting the quantities of free lime and magnesia which slake slowely causing change in volume of cement. Soundness of cement may be tested by Le-Chatalier Method.
A. It is essential that the cement concrete does not undergo changing volume after setting. This is ensured by limiting the quantities of free lime and magnesia which slake slowely causing change in volume of cement. Soundness of cement may be tested by Le-Chatalier Method.

Explanations:

It is essential that the cement concrete does not undergo changing volume after setting. This is ensured by limiting the quantities of free lime and magnesia which slake slowely causing change in volume of cement. Soundness of cement may be tested by Le-Chatalier Method.