Liquid limit test results for a soil are shown in the following. Find the Liquid

Question

Liquid limit test results for a soil are shown in the following. Find the Liquid Limit (LL) for the soil. Explain or show calculations on your answer. [5 points] 45 Liquid Limit Test Result 35 a 30 y =-31.04in(x) + 133.11 20 15 100 Number of Blows 5) Classify the following soils according to the Unified Soil Classification System a. 100% passed the No.4 sieve, 90% passed the No. 200 sieve. Fines contents: LL = 30% and PL = 17%. [5 points] b. 60% material retained on No.4 sieve, 30% material retained on No. 200 sieve. C,-10 C.-1.6, LL = 55% and PL = 25%. [5 points] c.94% material passed No. 4 sieve, 25% retained on No. 200 sieve. The fines exhibited low plasticity, rapid dilatancy and low dry strength. [5 points]

Explanation / Answer

Liquid limit is the water content at 25 no of blows

y = -31.04 ln 25 +133.11

y = -31.04 *3.2188 +133.11

y = 33.19 = 33 %

LL for the soil is 33 %

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