Type of clay Description Highly organic alluvial clays and peats Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech P Type of clay Description Typical Values of the Coefficient of Volume Compressibili Heavy over-consolidated boulder clays, stiff weathered rocks and hard clays Very low compressibility Boulder clays, marls, very stiff tropical red clays Low compressibility Firm clays, glacial outwash clays, lake deposits, weathered marls, firm boulder clays, normally consolidated clays at depth and firm tropical red clays Medium compressibility Normally consolidated alluvial clays such as estuarine and delta deposits, and sensitive clays High compressibility Very high compressibility Typical Values of the Coefficient of Volume Compressibili Heavy over-consolidated boulder clays, stiff weathered rocks and hard clays Very low compressibility Boulder clays, marls, very stiff tropical red clays Low compressibility
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Type of clay Description
Highly organic alluvial clays and peats
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.
Type of clay Description
Typical Values of the Coefficient of Volume Compressibility, m
Heavy over-consolidated boulder clays, stiff weathered rocks and hard clays
Very low compressibility
Boulder clays, marls, very stiff tropical red clays
Low compressibility
Firm clays, glacial outwash clays, lake deposits, weathered marls, firm boulder clays, normally consolidated clays at depth and firm tropical red clays
Medium compressibility
Normally consolidated alluvial clays such as estuarine and delta deposits, and sensitive clays
High compressibility
Very high compressibility
Typical Values of the Coefficient of Volume Compressibility, m
Heavy over-consolidated boulder clays, stiff weathered rocks and hard clays
Very low compressibility
Boulder clays, marls, very stiff tropical red clays
Low compressibility
Highly organic alluvial clays and peats
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.
Firm clays, glacial outwash clays, lake deposits, weathered marls, firm boulder clays, normally consolidated clays at depth and firm tropical red clays
Medium compressibility
Normally consolidated alluvial clays such as estuarine and delta deposits, and sensitive clays
High compressibility
Very high compressibility
Lower Limit Upper Limit Average
0.05
0.05 0.1 0.075 lempung berbatu besar
0.1 0.3 0.2 konsistensi teguh
0.3 1.5 0.9
1.5
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.
Lower Limit Upper Limit Average
0 0.0005 0
0.0005 0.001 0.00075
Typical Values of the Coefficient of Volume Compressibility, mv (after Carter 1983)
mv
(x10-3m2/kN)
Typical Values of the Coefficient of Volume Compressibility, mv (after Carter 1983)
mv
(m2/ton)
0.001 0.003 0.002
0.003 0.015 0.009
0.015 0 0
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.
SoilLower Limit Upper Limit
Normally consolidated medium sensitive clays 0.2 0.5Chicago silty clay (CL) 0.15 0.3Boston blue clay (CL) 0.3 0.5Vicksburg Buckshot clay (CH) 0.5 0.6Swedish medium sensitive clays (CL-CH) 1 3Canadian Leda clays (CL-CH) 1 4Mexico City clay (MH) 7 10Organic clays (OH) 4Peats (Pt) 10 15Organic silt and clayey silts (ML-MH) 1.5 4San Francisco Bay Mud (CL) 0.4 1.1San Francisco Old Bay clays (CH) 0.7 0.9Bangkok clay (CH)
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.
Typical Values of Compressibility Index, Cc (after Holtz and Kovacs 1981)
Cc
Average0.350.2250.40.55
22.58.5
12.52.750.750.80.4
Carter, M and Bentley, S. P., Correlations of Soil Properties, Pentech Press, London, 1991.