Experimental Investigation of Coupled Thermo-Hydraulic Properties of Glacial Tills

Tugce Baser, Kiseok Kim, Elisabeth Tarpey, Roman Makhnenko, Andrew Stumpf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper focuses on experimental investigation of the effect of temperature on coupled thermo-hydraulic properties of glacial tills. During operation of a geothermal system, geomaterials are subjected to thermal gradients that may significantly affect the hydraulic properties. An accurate characterization of these properties under representative field conditions is essential to provide input parameters for an efficient design. Therefore, this study focuses on the effect of temperature on hydraulic properties of glacial tills. Core samples at different depths were collected from a borehole for a planned geothermal site on the University of Illinois at Urbana-Champaign campus. A core flooding apparatus was used to perform experiments on saturated samples to characterize hydraulic properties of glacial tills at different temperatures and representative in situ stresses. The results revealed that the intrinsic permeability and hydraulic conductivity significantly increased with increasing temperatures. The increase was more pronounced at lower lateral stresses. An accurate characterization of coupled thermo-hydraulic properties of glacial tills will allow to the development of constitutive relationships for saturated geomaterials.

Original languageEnglish (US)
Title of host publicationGeo-Congress 2020
Subtitle of host publicationGeo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics
EditorsJames P Hambleton, Roman Makhnenko, Aaron S Budge
PublisherAmerican Society of Civil Engineers
Pages1-10
Number of pages10
DOIs
StatePublished - Feb 2020
EventGeo-Congress 2020 - Minneapolis, United States
Duration: Feb 25 2020Feb 28 2020

Publication series

NameGeotechnical Special Publication
PublisherAmerican Society of Civil Engineers (ASCE)
Volume319
ISSN (Print)0895-0563

Conference

ConferenceGeo-Congress 2020
CountryUnited States
CityMinneapolis
Period2/25/202/28/20

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Research Output

    Geo-Congress 2020: Geo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics

    Hambleton, J. P. (ed.), Makhnenko, R. (ed.) & Budge, A. S. (ed.), Feb 2020, American Society of Civil Engineers. (Geotechnical Special Publication; vol. 319)

    Research output: Book/ReportBook

    Cite this

    Baser, T., Kim, K., Tarpey, E., Makhnenko, R., & Stumpf, A. (2020). Experimental Investigation of Coupled Thermo-Hydraulic Properties of Glacial Tills. In J. P. Hambleton, R. Makhnenko, & A. S. Budge (Eds.), Geo-Congress 2020: Geo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics (pp. 1-10). (Geotechnical Special Publication; Vol. 319). American Society of Civil Engineers. https://doi.org/10.1061/9780784482827.001