The Le Chatelier soundness test on cement checks for:
Choose the correct answer
Fineness of cement
Compressive strength
Soundness: expansion due to free lime and MgO
Setting time
Correct Answer
C. Soundness: expansion due to free lime and MgO
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Le Chatelier test (IS 4031 Part 3) measures expansion due to free lime (CaO) and MgO in cement. Excess free lime hydrates slowly causing expansion and cracking. Max expansion allowed = 10 mm. High MgO content can cause long-term expansion (delayed ettringite).
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