TY - JOUR
T1 - Suction-Volume Change Indices for Natural and Recompacted Clay Soils
AU - Olaiz, Austin H.
AU - Houston, Sandra
AU - Zapata, Claudia E.
AU - Mosawi, Mohammad
N1 - Funding Information:
This work is based in part of research funded by the National Science Foundation (NSF) under Award No. 1462358, and the National Academies of Science, Engineering, and Medicine Transportation Research Board’s (TRB) National Cooperative Highway Research Program (NCHRP) Project 01-59. The opinions, conclusions, and interpretations are those of the authors and not necessarily of NSF or NCHRP.
Funding Information:
This work is based in part of research funded by the National Science Foundation (NSF) under Award No. 1462358, and the National Academies of Science, Engineering, and Medicine Transportation Research Board's (TRB) National Cooperative Highway Research Program (NCHRP) Project 01-59. The opinions, conclusions, and interpretations are those of the authors and not necessarily of NSF or NCHRP.
Publisher Copyright:
© ASCE.
PY - 2023
Y1 - 2023
N2 - The mechanical response of unsaturated soil is controlled by the two stress state variables of matric suction and net normal stress. Modern geotechnical laboratory devices allow for the direct measurement of unsaturated soil volumetric response under controlled conditions of both stress state variables. The oedometer pressure plate device (OPPD) is one apparatus that can impose suction-induced partial wetting conditions under constant or varying vertical stress conditions while measuring vertical deformations. This study brings together three extensive laboratory investigations of the mechanical response of fine-grained soil specimens to variations in both matric suction and net normal stress, which were conducted using a series of OPPDs located at Arizona State University's Geotechnical Laboratory. The effects of differing soil index properties, sample preparation, and stress path history on the moisture-driven volumetric response is evaluated. A comparison between the suction-volume change indices of reconstituted clay specimens to those of relatively intact clay specimens is also included.
AB - The mechanical response of unsaturated soil is controlled by the two stress state variables of matric suction and net normal stress. Modern geotechnical laboratory devices allow for the direct measurement of unsaturated soil volumetric response under controlled conditions of both stress state variables. The oedometer pressure plate device (OPPD) is one apparatus that can impose suction-induced partial wetting conditions under constant or varying vertical stress conditions while measuring vertical deformations. This study brings together three extensive laboratory investigations of the mechanical response of fine-grained soil specimens to variations in both matric suction and net normal stress, which were conducted using a series of OPPDs located at Arizona State University's Geotechnical Laboratory. The effects of differing soil index properties, sample preparation, and stress path history on the moisture-driven volumetric response is evaluated. A comparison between the suction-volume change indices of reconstituted clay specimens to those of relatively intact clay specimens is also included.
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U2 - 10.1061/9780784484708.065
DO - 10.1061/9780784484708.065
M3 - Conference article
AN - SCOPUS:85151730435
SN - 0895-0563
VL - 2023-March
SP - 681
EP - 692
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 343
T2 - 2023 Geo-Congress: Sustainable Infrastructure Solutions from the Ground Up - Geotechnical Systems from Pore-Scale to City-Scale
Y2 - 26 March 2023 through 29 March 2023
ER -