TY - JOUR
T1 - Effects of specimen thickness on apparent swelling pressure evolution of compacted bentonite
AU - Wang, Hailong
AU - Ruan, Kunlin
AU - Harasaki, Satoru
AU - Komine, Hideo
N1 - Funding Information:
Some of this work was performed as a part of the activities of the Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University. Part of this study was supported Waseda University Grant for Special Research Projects (Project number: 2021C-231). Mr. Takashi Yoshida and group members of the Manufacturing laboratory of Waseda University provided important technical support during apparatus development. Dr. Hiroyuki Kyokawa and Mr. Danxin Sun gave valuable review comments. The authors express their deep gratitude to all those mentioned above.
Funding Information:
Some of this work was performed as a part of the activities of the Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University. Part of this study was supported Waseda University Grant for Special Research Projects (Project number: 2021C-231). Mr. Takashi Yoshida and group members of the Manufacturing laboratory of Waseda University provided important technical support during apparatus development. Dr. Hiroyuki Kyokawa and Mr. Danxin Sun gave valuable review comments. The authors express their deep gratitude to all those mentioned above.
Publisher Copyright:
© 2022
PY - 2022/2
Y1 - 2022/2
N2 - With the interests to see specimen thickness (hsp) effect on apparent swelling pressure (ps) of compacted bentonite and capture characteristics of ps development during wetting bentonite specimens (ps evolution, hereafter), a series of tests to measure ps of compacted bentonite specimens with a dry density (ρd) range of 0.99–1.76 Mg/m3 and a specimen thickness (hsp) range of 2–10 mm were conducted. Test results suggest: (1) ps evolution generally has common characteristics with four feature points chronologically: peak (tp, pp), valley (tv, pv), initial equilibrium (tei, pei) and an equilibrium (teq, peq), where, tp, tv, tei and teq represent time (t) and pp, pv, pei, and peq denote ps of the four feature points, respectively; (2) within the tested range, hsp effect is generally minor on ps at feature points, and pp, pv, pei, and peq have well correlations with specimen final dry density (ρdf); (3) time scale for specimens with different hsp can be well unified by a time coefficient χsp (=hsp/√t).
AB - With the interests to see specimen thickness (hsp) effect on apparent swelling pressure (ps) of compacted bentonite and capture characteristics of ps development during wetting bentonite specimens (ps evolution, hereafter), a series of tests to measure ps of compacted bentonite specimens with a dry density (ρd) range of 0.99–1.76 Mg/m3 and a specimen thickness (hsp) range of 2–10 mm were conducted. Test results suggest: (1) ps evolution generally has common characteristics with four feature points chronologically: peak (tp, pp), valley (tv, pv), initial equilibrium (tei, pei) and an equilibrium (teq, peq), where, tp, tv, tei and teq represent time (t) and pp, pv, pei, and peq denote ps of the four feature points, respectively; (2) within the tested range, hsp effect is generally minor on ps at feature points, and pp, pv, pei, and peq have well correlations with specimen final dry density (ρdf); (3) time scale for specimens with different hsp can be well unified by a time coefficient χsp (=hsp/√t).
KW - Apparent swelling pressure
KW - Compacted bentonite
KW - Specimen thickness effect
KW - Swelling pressure evolution
KW - Time coefficient
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U2 - 10.1016/j.sandf.2021.101099
DO - 10.1016/j.sandf.2021.101099
M3 - Article
AN - SCOPUS:85122250308
SN - 0038-0806
VL - 62
JO - Soils and Foundations
JF - Soils and Foundations
IS - 1
M1 - 101099
ER -