TY - JOUR
T1 - Stress history and sampling disturbance effects on monotonic and cyclic responses of overconsolidated Bootlegger Cove clays
AU - Zapata-Medina, David G.
AU - Finno, Richard J.
AU - Vega-Posada, Carlos A.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/5
Y1 - 2014/5
N2 - This paper examines the influence of reproducing the stress history of a natural soil deposit during laboratory reconsolidation on the subsequent response and behavior of heavily overconsolidated Bootlegger Cove Formation (BCF) clays under both monotonic and cyclic loadings. The results are compared with a conventional reconsolidation technique wherein a specimen is directly K0-reconsolidated to the in situ effective stresses, and no stress history of the overconsolidated soil deposit is reproduced. Monotonic and cyclic experiments under triaxial conditions were conducted and their results compared in terms of stress-strain-strength responses with emphasis on shear stiffness degradation, to show the significant difference in the responses between the stress-probe sets. Additionally, comparison with field and in situ measurements are presented to validate procedures, judge the accuracy of the experiments, and evaluate the effects of tube sampling.
AB - This paper examines the influence of reproducing the stress history of a natural soil deposit during laboratory reconsolidation on the subsequent response and behavior of heavily overconsolidated Bootlegger Cove Formation (BCF) clays under both monotonic and cyclic loadings. The results are compared with a conventional reconsolidation technique wherein a specimen is directly K0-reconsolidated to the in situ effective stresses, and no stress history of the overconsolidated soil deposit is reproduced. Monotonic and cyclic experiments under triaxial conditions were conducted and their results compared in terms of stress-strain-strength responses with emphasis on shear stiffness degradation, to show the significant difference in the responses between the stress-probe sets. Additionally, comparison with field and in situ measurements are presented to validate procedures, judge the accuracy of the experiments, and evaluate the effects of tube sampling.
KW - Monotonic and cyclic loading
KW - Reconsolidation
KW - Sampling disturbance
KW - Stiffness degradation
KW - Stress history
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U2 - 10.1139/cgj-2013-0292
DO - 10.1139/cgj-2013-0292
M3 - Article
AN - SCOPUS:84901760337
SN - 0008-3674
VL - 51
SP - 599
EP - 609
JO - Canadian Geotechnical Journal
JF - Canadian Geotechnical Journal
IS - 6
ER -