TY - JOUR
T1 - Influence of saturation on hydromechanical properties of glacial tills
AU - Renjifo Ciocca, Jose V.
AU - Makhnenko, Roman Y.
N1 - This study was supported by the Office of Surface Mining Reclamation and Enforcement (OSMRE), the United States Department of the Interior, under the funding opportunity number: S17AS00005. Endorsement by OSMRE is not implied and should not be assumed.
The work described herein was supported in part by the U.S. National Science Foundation via Grant No. 0537244, Dr. Richard J. Fragaszy, Program Manag er. The authors are grateful for this financial support.
This study is financially supported by USGS National Earthquake Hazards Reduction Program (NEHRP) under Grant No. G17AP00088 and by NASA under G rant No. 18-DISASTER18-0022.
5HVHDUFK RI - 5HQMLIR &LRFFD ZDV SDUWLDOO\ IXQGHG IURP ³&DPSXV DV D /LYLQJ /DE´ SURJUDP of the Institute for Sustainability, Energy, and Environment (iSEE) at the University of Illinois at Urbana-Champaign and the Corsetti Fellowship. The retrieval of the glacial till cores was funded by Carbon Credit Sales Fund at the Facilities and Services, University of Illinois.
The experiments described and the resulting data presented herein, unless otherwise noted, were funded under PE 0602784A, Project T53 "Military Engineering Applied Re VHDUFK ´ 7DVN under Contract W913E518C0008, managed by the US Army Engineer Research and Development &HQWHU (5'& 7KH ZRUN GHVFULEHG LQ WKLV SDSHU ZDV FRQGXFWHG DW 5RZDQ 8QLYHUVLW\¶V &HQWHU IRU Research and Education in Advanced Transportation Engineering Systems (CREATEs), Mullica Hill, NJ. Permission was granted by the Director, Geotechnical and Structures Laboratory to publish this information. The authors also acknowledge and appreciate the support of various suppliers including: Troxler Electronic Laboratories who provided density gauges; Lehigh Technologies, Inc. who provided materials, Aerix Industries who provided a concrete foaming machine; and Aero Aggregates who provided glass foam aggregates.
The authors would like to thank the TxDOT for granting the funds and support personnel for research project 06944. The authors would like to acknowledge the University of Texas Arlington team members Cody undbeL rg, and Kevin Weinhold for their help during data collection. The authors gratefully acknowledge the support and generosity of the NSF Industry - 8QLYHUVLW\ &RRSHUDWLYH 5HVHDUFK &HQWHU , 8&5& SURJUDP IXQGHG µ&HQWHU IRU ,QWHJUDWLRQ RI &RPSRVLWHV LQWR ,QIUDVWUXFWXUH &,&, ¶ VLWH DW 7$08 16) 3'P ra k'asUh Balan), for its partial support towards this work. The authors would also like to acknowledge Thamer Yacoub and Sina Javankhoshdel of Rocscience Inc.
This study was sponsored by the Army Research Office and was accomplished under Grant Numbers W911NF -16-1-0336, W911NF -18-1-0068 and W911NF -20-1-0238. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government.
The authors would like to express their gratitude to Mr. Gary Hubbard at Greater Bossier Economic Development Foundation and Dr. Shams Arafat for their assistance in soil sampling works in the field. We thank Swarajit Sarker for assistance with Figure 1. W e are also immensely grateful to Graphic Packaging International Inc. for kindly proving black liquor and Millennium Galvanizing for kindly providing SSA. The authors want to sincerely acknowledge the competitive research subprogram of the Louisiana Board of Regents for funded project LEQSF(2017 -20)-Rd-A11 and Region 6 Environmental Protection Agency P2 for grant NP - 01F55301 – 0. The two grants provided financial support for conducting the research presented in this paper.
Financial support was provided by the Colombian Administrative Department of Science, Technology and Innovation (COCL IENCIAS) , Scholarship Program No. 757-2016, and the Florida Department of Transportation (FDOT), Grant No. BDV24 TWO 977 -29. The support of the funding agencies is greatly appreciated.
This research was supported by the Iowa Department of Transportation under IHRB Project TR-725. This support is gratefully acknowledged. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the sponsor. The authors wish to thank Paul Kremer for his guidance and help during instrumentation; Haluk Sinan Coban , Sajjad Satvati, Qingwei Meng and Ziqiang Xue for their assistance in field installation. The authors also acknowledge the hard work contributed by Masrur Mahedi to the laboratory and fieldwork that was critical to the successful completion of this project.
The authors would also like to gratefully acknowledge the financial support from the National Science Foundation under Grant No. CMMI -1804822.
PY - 2021
Y1 - 2021
N2 - A partially saturated condition resulting in a multi-phase pore fluid (air-water mixture) shapes the mechanical and hydraulic behavior of fine-grained soils. The purpose of this experimental investigation is to assess how the properties of glacial tills, utilized for a shallow geothermal project in central Illinois, change with the degree of saturation. The saturation process is a function of time and water pressure that results in the compression of the air bubbles while forcing them to dissolve into the surrounding pore fluid as the applied pressure increases. Measurements of the Skempton's B coefficient under the undrained condition at fixed value of the effective mean stress provide the assessment of the degree of saturation. B-values are increasing with the decrease of pore fluid compressibility and eventually become constant (and ≈1 for soils) when full saturation is achieved. The implications of a partially saturated condition were evaluated by conducting undrained compression tests and permeability measurements at B = 0.05 (94% water saturation), B = 0.44 (97% water saturation), and B = 0.95 (fully saturated). The results corroborated increased compressibility and decreased permeability at partial saturation, emphasizing the importance of assessing the saturation conditions at which material properties are reported.
AB - A partially saturated condition resulting in a multi-phase pore fluid (air-water mixture) shapes the mechanical and hydraulic behavior of fine-grained soils. The purpose of this experimental investigation is to assess how the properties of glacial tills, utilized for a shallow geothermal project in central Illinois, change with the degree of saturation. The saturation process is a function of time and water pressure that results in the compression of the air bubbles while forcing them to dissolve into the surrounding pore fluid as the applied pressure increases. Measurements of the Skempton's B coefficient under the undrained condition at fixed value of the effective mean stress provide the assessment of the degree of saturation. B-values are increasing with the decrease of pore fluid compressibility and eventually become constant (and ≈1 for soils) when full saturation is achieved. The implications of a partially saturated condition were evaluated by conducting undrained compression tests and permeability measurements at B = 0.05 (94% water saturation), B = 0.44 (97% water saturation), and B = 0.95 (fully saturated). The results corroborated increased compressibility and decreased permeability at partial saturation, emphasizing the importance of assessing the saturation conditions at which material properties are reported.
UR - https://www.scopus.com/pages/publications/85106038046
UR - https://www.scopus.com/pages/publications/85106038046#tab=citedBy
U2 - 10.1061/9780784483435.028
DO - 10.1061/9780784483435.028
M3 - Conference article
AN - SCOPUS:85106038046
SN - 0895-0563
VL - 2021-May
SP - 282
EP - 293
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 326
T2 - 2021 International Foundations Congress and Equipment Expo: Geoenvironmental Engineering, Geomaterial Modeling, Transporation Geotechnics, and Case Histories, IFCEE 2021
Y2 - 10 May 2021 through 14 May 2021
ER -