lecture_4 - Lecture 4 Three Phase Description of Soil Clay...

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Lecture # 4 Three Phase Description of Soil, Clay Mineralogy, Typical Unit Weights and Specific Gravities
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Soil Composition Phase Diagram: Describes the Relative Proportions of Solids, Water, And Air in Soil at Any Location Water Air Solids V a V v V w V s V W a = 0 W w , M w W s , M s W = W s +W w Air Water Solids M = M s +M w
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Weight - Volume Relationships ( F / L 3 ) V a V v V w V s V W a = 0 W w W s W Air Water Solids Total Unit Weight Unit Weight γ = W / V Buoyant Unit Weight γ b = γ ’ = γ sat - γ w Unit Weight of Water γ w = W w / V w = 62.4 lb/ft 3 = 9.81 kN/m 3 Dry Unit Weight γ d = W s / V Sat. Unit Weight γ sat = γ = W / V When V w = V v or V a = 0 Unit Weight of Solids γ s = W s / V s
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Volume & Weight Ratios Void Ratio, e e = V v / V s Porosity, n (%) – n = V v / V x 100 Deg. of Saturation, S (%) – S = V w / V v x 100 V a V v V w V s V W a = 0 W w W s W Air Water Solids Moisture Content, w (%) – w = W w / W s x 100 Specific Gravity of solids, G s Gs = γ s / γ w = W s / (Vs γ w )
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Mass – Volume Equations V a V v V w V s V M a = 0 M w M s Air Water Solids M = M
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This note was uploaded on 08/03/2011 for the course CEG 4011 taught by Professor Bloomquist during the Spring '11 term at University of Florida.

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lecture_4 - Lecture 4 Three Phase Description of Soil Clay...

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