... was sieved through a 425µm BS sieve. It was then kept in an airtight container until the test was to be executed. LIQUID LIMIT PROCEDURE 1) Take a sample of about 300g of soil. Transfer the soil to a flat glass plate. Add distilled water and mix thoroughly with two palette knives until the mass becomes a thick homogeneous paste. 2) Mix the paste for at least 10 minutes using the two palette knives. If necessary add more distilled water so that the first cone penetration reading is about 15mm. 3) Push a portion of the mixed soil into the cup with a palette knife taking care not to trap air. Strike off excess soil with the straightedge to give a smooth level surface. 4) With the penetration cone locked in the raised position lower the supporting assembly so that the tip of the cone just touches the surface of the soil. When the cone ...

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