In the context of deep nuclear wastes storage deep galleries will be backfilled with clay-based materials. These backfill must have specific hydromechanical properties to prevent water circulation along the repository after its closure. The backfill material will be partly made from the excavated material, i.e. Callovo-Oxfordian argillite that would have been stored at surface during the exploitation period, and mixed with sand to reach the target design properties. The hydromechanical properties of the backfill must remain stable over time. It is thus necessary to determine the relative impact of several factors such as the setting conditions, nature and dosage of treatment product, etc. on the properties of the backfill. The thesis will be focused at understanding the cross relationship between macroscopic hydromechanical properties, the reorganization of the material microstructure due to the swelling of clay particles upon hydration as well as the alteration processes associated to the circulation of alkaline water.

More information on this pdf file.

A Research Fellowship position is open at the National Laboratory for Civil Engineering in Lisboa, Portugal, in the framework of the project “Geosustained – Sustainability assessment of shallow Geo-thermal systems for Lisbon. Characterization studies of the city soils thermal and thermomechanical behaviour”.

More information on this pdf file.

A “Maître de Conférences” (Lecturer) position at ENS Paris-Saclay and LMPS laboratory is open. More information on this pdf file.

The Geotechnical Research Group at Northumbria University, Newcastle upon Tyne, UK is looking for a highly motivated and talented individual to fill a Ph.D. student position. To keep pace with the rapidly developed digital technologies, the project will perform data analytics of geotechnical and geophysical data using novel machine learning methods, with a focus on dealing with large quantities of multivariate, incomplete, 3-dimensional data subject to spatial variability.

The objective of the project is to develop a three-dimensional spatially variable geological profile with a reasonable quantification of the uncertainties. Various machine-learning methods will be explored to make the geological model explicit (i.e., to be not a black box) and incorporate human knowledge and judgment. The student will be supervised by data analytic, geotechnical and geophysical experts in the team and have the opportunity to cooperate with leading researchers in the field of data analytics in geoengineering. The student will work closely with industry partners to deal with geological modeling challenges in geologically complex areas.

More information can be found on the following link: https://www.findaphd.com/phds/project/data-driven-site-characterization-using-geotechnical-and-geophysical-data-rdf23-mce-qi/?p151500

Title : Durability study of roads containing alternative materials by dielectric and mechanical characterizations

Starting: November 2023 (36 months funding by Cerema)

Supervisors: Alain Sylvestre, Cyrille Fauchard, Benhui Fan and Jean-Marc Duchamp

Laboratory: G2ELab (Université Grenoble Alpes) and Endsum (Cerema)

Location: Grenoble (50%), Angers (50%), France

Keywords: dielectric permittivity, viscoelastic properties, ageing, road materials

To be submitted to: benhui.fan@cerema.fr; alain.sylvestre@g2elab.grenoble-inp.fr;
cyrille.fauchard@cerema.fr; jean-marc.duchamp@g2elab.grenoble-inp.fr
The application should include: a detailed CV and if possible, recommendation letters.

Application deadline : 30 April 2023.

The GeoEnergy Research (Prof. Andreas Busch) and MuPhi (Prof. Florian Doster) Research Groups at Heriot-Watt University are looking for a motivated PhD researcher to work on the impact of multiphase flow effects on fault leakage from geological reservoirs used for fluid storage, focusing specifically on CCS and hydrogen. This research will ground on recent data that has been obtained from multiscale 4D X-ray imaging at the Swiss Light Source. It will provide new and detailed insights into the multiphase fluid dynamics in rough fractures. Using novel data from synchrotron experiments will support more accurate predictions of the potential fluid leak rates from subsurface reservoirs. These are urgently needed to improve our confidence in subsurface fluid storage over long periods of time. This research can be divided into the following objectives:

1. Develop a robust understanding of multiphase flow in rough fractures, based on 4D flow data. The data will be analysed towards displacement to obtain relative permeability and capillary pressure curves at a given effective stress but with varying surface roughness, aperture heterogeneity, and flow rates (capillary numbers).
2. Represent fracture flow phenomena at the Darcy scale in physical models for fractures and fracture networks. This will support caprock leakage risk assessments by improving our confidence in the determination of leak rates by bringing together fracture network data (from previous research by the PI/co-Is) and upscaled fluid displacement models from this research.

This scholarship is available to UK and overseas students and in partnership with Shell Global Solutions. Funding is secured for 42 months and we aim for a May 2023 start. Application deadline is January 29^th.

Further details can be found on the university website:

https://www.hw.ac.uk/uk/schools/energy-geoscience-infrastructure-society/postgraduate-research/evaluation-of-fault-leakage-rates-in-the-context-of.htm

We are looking for a postdoctoral researcher to work with us on one or more cross cutting research themes of phyGEO lab (https://home.iitk.ac.in/~pnmishra/) at Indian Institute of Technology, Kanpur.

If you are a motivated individual with a PhD (or in your final stages), and work in the domains of (a) soil sensing technology, (b) unsaturated soils, (c) tailings and industrial wastes and (d) biogeotechnics, we would like to hear from you. Interested candidates may contact us at pnmishra@iitk.ac.in with a cover letter, CV and a problem statement that aligns with our research themes and your experience/interest.

The Geotechnical Research Group at Chalmers University of Technology is looking for a highly motivated and talented individual to fill a PhD student position linked with a research project funded by Vetenskapsrådet (Swedish research council). The project is conceived as fundamental experimental research on the genesis and failure of quick clays using a combination of physical model tests, rheology experiments, and miniature hydro-mechanical tests with simultaneous 4D monitoring of the internal structure using optical and X-ray based scattering and imaging methods.

The ultimate aim of the project is to link the unique response of natural quick clays at engineering scale to physico-chemical and micro-mechanical processes during formation (sedimentation, consolidation) and failure. In addition to the main supervisor (Prof. Jelke Dijkstra) and a local co-supervisor (Dr Angela Casarella) at ACE, Dr Stephen Hall at the Division of Solid Mechanics at Lund University will co-supervise the project with his expertise on advanced X-ray and neutron based methods. The project will be embedded in a larger constellation of projects at the department that focus on the fundamental behaviour of (natural) clays, ground improvement and sustainable materials in Civil Engineering. 

More information can be found on the following link:

https://www.chalmers.se/en/about-chalmers/Working-at-Chalmers/Vacancies/Pages/default.aspx?rmpage=job&rmjob=11298&rmlang=UK

Applications are invited for 11 PhD positions (hereafter called Doctoral Candidates, DCs) to be funded by the Marie Skłodowska-Curie Actions Doctoral Network in ‘Foundations foR Offshore wiNd TurbInES (FRONTIErS)’ under the European Commission Horizon Europe and UK Research and Innovation!

Application Deadline: 31st January 2023, 23:59 – GMT.

More information on this pdf file and on this website: https://euraxess.ec.europa.eu/jobs/43417

The Laboratory of Soil Mechanics (LMS) at the Swiss Federal Institute of Technology, EPFL, Lausanne, is seeking a Ph.D. student to support the development of innovative tools for designing geotechnical engineered barriers for the isolation of waste from the environment. The focus of the project concerns both nuclear waste and municipal waste barriers.

More information on this flyer.

Please send an email with the subject line “Ph.D. application – SNSF project” including your motivation letter and your CV to recruitment.lms@epfl.ch and angelica.tuttolomondo@epfl.ch.
Applications will be evaluated as soon as received.