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A series of radial stress path tests has been performed on
the remolded Taipei silty clay with the true triaxial testing
device to find out its strength behavior under different
anisotropic stress levels. Test results indicate that
Mohr-Coulomb failure criterion can not satisfactorily
represent the soil strength following various stress paths.
In comparison, the total stress NTNT-T1 model for anisotropic
soil can quite accuately predict the relationship between the
normalized undrained shear strenth (Su/ σ ''c) and the
direction of stress path ( θ ) for soil having the OCR value
smaller than 4 with less than 7% difference from the test
results. However, the Prevost''s total stress model tends to
underestimte the lavoratory undrained shesr strength of
normally consolidated to lightly oveconsoildated soil. In
other words. the strength of remolded Taipei silty clay can
be satisfacorily represented by the NTIT-T1 model.
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