Hardening soil model is applicable to which type of soil
Answers
Explanation:
Abstract
A comprehensive set of experimental data on Bangkok subsoils from oedometer and triaxial tests are analysed in this paper in order to determine the stiffness and strength parameters for Hardening Soil Model. The parameters determined are the Mohr–Coulomb effective stress strength parameters together with the stiffness parameters; tangent stiffness for primary oedometer loading, secant stiffness in undrained and drained triaxial tests, unloading/reloading stiffness and the power for stress level dependency of stiffness. The oedometer data are obtained from three different Bangkok soil layers: soft clay at 6–8 m depths; medium clay at 12–14 m depths; and stiff clay at 15.5–18 m depths. The triaxial tests data are carried out for soft and stiff clays at depths of 5.5–6 m and of 16–18 m under both undrained and drained conditions, respectively. Finally, two sets of parameters for soft and stiff Bangkok clays are numerically calibrated against undrained and drained triaxial results using PLAXIS finite element
Alluvial soils: The most fertile soil is the alluvial soil. Alluvial soil has been deposited by flowing rivers. It generally consists of minute particles of soil of various kinds mixed with salts and other minerals, and contains animal and vegetable matters in a state of complete decay.
Black soils: Black soil is rich in calcium, potassium and magnesium but has poor nitrogen content. Crops like cotton, tobacco, chilly, oil seeds, jowar, ragi and maize grow well in it
Red soils: Red soil are usually found in warm, temperate climate zones like India. These are derived from crystalline rock. These are usually poor growing soils with low nutrients and humus. These soils are very difficult for cultivation due to their low water holding capacity.
Laterite soils: Laterite soil is formed due to intense leaching by rain water. Laterite soil is a rock type soil rich in iron and aluminium, and is commonly considered to have formed in hot and wet tropical areas.
Mountain soils: Mountain soils are formed due to the accumulation of organic matter which is derived from the forest growth.
Desert soils: Most desert soils are called Aridisols (dry soil). These are porous sandy soils with low nitrogenous matter and humus.