Page 292 - Analysis and Design of Energy Geostructures

Thermohydromechanical behaviour of soils and soil structure interfaces 267

h. The contractive thermally induced volumetric strains that characterise
fine-grained soils under NC conditions increase with the plasticity index
of the soil.
i. Coarse-grained materials can be characterised by the thermal collapse
phenomenon:
i. True
ii. False
j. The yield surface of fine-grained soils shrinks at constant void ratio with
increasing temperature:
i. True
ii. False
k. The shrinkage of the yield surface with increasing temperature that is
observed for fine-grained soils is not homothetic, depends on the stress
history and is associated with thermal softening:
i. True
ii. False
l. Compressibility parameters can be considered insensitive to temperature
variations:
i. True
ii. False
m. Employing a constant value of Young’s modulus with temperature in the
analysis and design of energy geostructures can be considered
appropriate:
i. True
ii. False
n. The angle of shear strength of soils under constant volume conditions
markedly varies with temperature:
i. True
ii. False
o. The slope of the critical state line depends on temperature:
i. True
ii. False
p. The primary consolidation coefficient markedly varies with temperature:
i. True
ii. False
q. The structure roughness is commonly identified through the normalised
roughness, R n [ ], which is defined as the ratio between the maximum