Consolidation in the Lab (Lambe & Whitman, Soil Mechanics , 1969) - PDF document

Consolidation in the Lab

(Lambe & Whitman, Soil Mechanics , 1969)

Casagrande Method 0% 10% d 20% 2d 30% 40% U 50% 60% 70% t 80% 4t 90% 100% 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 T

Casagrande Method 0% d 10% 2d 20% 30% 40% U 50% 60% 70% T 100 80% 90% 100% 0.01 0.04 0.01 0.1 1 10 t 4t T

t 100

Casagrande Method

Taylor Method 0% 10% 20% 1.15 d 30% d 40% U 50% 60% 70% 80% 90% 100% 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 SQRT(T)

Taylor Method

Inflection Point Method 1.00 T vi = 0.405 0.90 0.80 ∂ 2 U 0.70 = 0 ( ) ∂ 2 logt 0.60 dU/dlog(t) . 0.50 0.40 0.30 0.20 0.10 0.00 0.01 0.1 1 10 T

Inflection Point Method 0% 10% 20% 30% 40% T vi = 0.405 U 50% 60% 70% 80% 90% 100% 0.01 0.1 1 10 T

RH Method 8 7 6 5 1/U 4 3 2 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 T

RH Method 1 0.9 0.8 0.7 0.6 D 60 T/U 0.5 0.4 0.3 0.2 0.1 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 T