Development of a new temperature-controlled oedometer
File(s)
Published version
Author(s)
Kirkham, Andrew
Tsiampousi, Aikaterini
Potts, David
Type
Conference Paper
Abstract
A new temperature-controlled oedometer has been designed at Imperial College London and commissioned to investigate the thermo-hydro-mechanical behaviour of soils. Under oedometric conditions, temperature can be varied between 5°C and 70°C, by submerging the specimen in a temperature-controlled water bath. This temperature range is appropriate for the proposed applications of the research: design of ground-source heating/cooling systems, and design of geological disposal facilities for nuclear waste. In this paper, an overview of the new equipment is given: its design, development, and calibration. First, the literature on temperature-controlled oedometer schemes is reviewed. A description of the equipment follows, with further details on the innovations and limitations of this design. As the equipment has been modified and improved over the course of the research, so too has the calibration procedure. These developments are discussed, again with the focus on innovations and limitations. Finally, a test programme and preliminary results are presented, for saturated KSS, an artificial mixture of kaolin clay, silt, and sand. These include isobaric (constant-pressure) heating tests, for a variety of loading histories. Over-consolidation ratio is found to affect the thermally-induced volume change.
Date Issued
2020-11-18
Date Acceptance
2020-11-01
Citation
E3S Web of Conferences, 2020, 205, pp.1-7
Publisher
EDP Sciences
Start Page
1
End Page
7
Journal / Book Title
E3S Web of Conferences
Volume
205
Copyright Statement
© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0
(http://creativecommons.org/licenses/by/4.0/).
(http://creativecommons.org/licenses/by/4.0/).
License URL
Sponsor
Geotechnical Consulting Group LLP
Identifier
https://www.e3s-conferences.org/articles/e3sconf/abs/2020/65/e3sconf_icegt2020_04015/e3sconf_icegt2020_04015.html
Grant Number
CISM_P60087
Source
2nd International Conference on Energy Geotechnics (ICEGT 2020)
Publication Status
Published
Start Date
2022-04-10
Finish Date
2022-04-13
Coverage Spatial
California, USA
Date Publish Online
2020-11-18