Brass electrodes testing

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Table of contents

Acknowledgments
Résumé
Contents
List of Figures
List of Tables
Introduction
1 Theoretical background
1.1 Background on clay structures
1.2 Background on geo-electrical methods
1.2.1 Maxwell’s laws for induced polarization
1.2.2 Active electrical methods in geophysics
1.3 Background on SIP
1.3.1 The electrical double layer
1.3.2 Polarizationmechanisms
1.3.3 SIP models
1.3.3.1 Phenomenological models
1.3.3.2 Physical models
1.4 Upscaling techniques
1.4.1 Differential effective medium
1.4.2 Pore networkmodeling
2 Materials and methods
2.1 Non-polarizable electrodes
2.1.1 Electrode testing
2.1.2 Path to finding a good electrode design
2.1.3 Brass electrodes testing
2.1.4 Electrode correction
2.2 Tests for water content
2.3 Sample holder
2.3.1 Comments on sample holder construction
2.3.2 Geometrical factor of sample holder
2.4 Compression and decompression tests
2.5 Water chemistry
2.6 Conclusion of this chapter
3 SIP on individual types of clays
3.1 JGR article in the context of this thesis
3.2 JGR article
3.3 Main results of JGR article
3.4 Supplementary information of JGR article
3.4.1 SIP measurements on additional samples
3.4.2 Differentiation of clay minerals
3.4.3 Repeatability test
3.4.4 Relationship between the imaginary conductivity at a frequency of 1.46 Hz and surface area per unit pore volume
3.5 Comment on pore water equilibrium
4 SIP on heterogeneous clays
4.1 Introduction tomanuscript
4.2 Manuscript
4.3 Main results of manuscript
4.4 Complements tomanuscript
4.4.1 Mesh types on complex conductance networks
5 Perspectives
5.1 Varying pH on individual clay samples
5.2 Clay heterogeneity mixtures
5.3 Clay compaction
5.4 Numericalmodeling
5.4.1 Numerical models in SIP
5.4.2 Numerical models of clays
5.5 Various recommendations
Conclusions
Appendix1
Electrode construction
Calculation of errorbars for the complex conductivity
Appendix2
Article Jougnot et al. (2019)
Bibliography