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Author: Grafiati

Published: 19 October 2024

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1

Kleib, Joelle, Mouhamadou Amar, Georges Aouad, Xavier Bourbon, Mahfoud Benzerzour, and Nor-Edine Abriak. "The Use of Callovo-Oxfordian Argillite as a Raw Material for Portland Cement Clinker Production." Buildings 12, no. 9 (September 10, 2022): 1421. http://dx.doi.org/10.3390/buildings12091421.

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Excavated soils and rocks are materials obtained in construction works that could represent an ecological issue if a durable and efficient reuse process is not set. The radioactive waste disposal planned by the French National Radioactive Waste Management Agency will generate large quantities of excavated soil (mainly as Callovo-Oxfordian argillite). The re-use of excavated soils is a recent question. There is a lack in the literature concerning the recycling of such materials. Therefore, this paper aims to investigate the possibility of using Callovo-Oxfordian argillite (COx argillite from the French URL) as a raw material for Portland cement clinker production. COx argillite was first characterized by X-ray diffraction (XRD) and X-ray fluorescence (XRF) then a Portland cement clinker was synthesized at laboratory scale. The produced clinker was characterized to verify the chemical and mineralogical composition. After adding gypsum, the reactivity of the resulting cement was assessed by setting time and isothermal calorimetry measurements. The compressive strength was assessed on standard mortar prisms at 1, 14 and 28 days. The results show that a Portland cement clinker containing 64% C3S, 14% C2S, 10% C4AF, 7% C3A and 1% CaO can be produced when 22.24% of raw meal was substituted by the COx argillite. The setting time and isothermal calorimetry results show that the produced cement shows an equivalent reactivity to conventional ordinary Portland cement. The compressive strength at 28 days is 56 MPa, showing that the produced cement can be considered as CEM I 52.5 N Portland cement.

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2

Liu, Jiang-Feng, Yang Song, Frédéric Skoczylas, and Jian Liu. "Gas migration through water-saturated bentonite–sand mixtures, COx argillite, and their interfaces." Canadian Geotechnical Journal 53, no. 1 (January 2016): 60–71. http://dx.doi.org/10.1139/cgj-2014-0412.

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France’s deep-seated nuclear waste repository consists of a natural barrier located at a depth of 500 m in a Callovo-Oxfordian clayey formation. This repository has artificial barriers that include plugs of swelling clay (MX80 bentonite – sand mixtures) for sealing purposes. This paper focuses on the gas migration properties of water-saturated bentonite–sand mixtures and their interfaces with COx argillite. The main contribution of our study is the identification of a preferential gas migration pathway by measuring the downstream gas breakthrough pressures and gas flow rates. The water permeabilities of the bentonite–sand mixtures and their interfaces with COx argillite or COx argillite itself are the same order of magnitude (10−20–10−21 m2). Thus, water tightness can be obtained for these materials when they become completely saturated. The results obtained from the gas breakthrough tests suggest that both the COx argillite and its interface with the bentonite–sand mixture can act as preferential pathways for gas migration. The transport of the gas through the COx argillite or through its interface with the bentonite–sand mixture depends on the initial state of the COx argillite.

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3

Boulin, Pierre Francois, Rafael Angulo-Jaramillo, Jean-Francois Daian, Jean Talandier, and Philippe Berne. "Pore gas connectivity analysis in Callovo-Oxfordian argillite." Applied Clay Science 42, no. 1-2 (December 2008): 276–83. http://dx.doi.org/10.1016/j.clay.2008.01.014.

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4

Tran, Huy T. "Analysis of Mechanical Behavior of the Callovo-Oxfordian Argillite." IOP Conference Series: Earth and Environmental Science 143 (April 2018): 012040. http://dx.doi.org/10.1088/1755-1315/143/1/012040.

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5

de Combarieu, G., P. Barboux, and Y. Minet. "Iron corrosion in Callovo–Oxfordian argilite: From experiments to thermodynamic/kinetic modelling." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 1-7 (January 2007): 346–58. http://dx.doi.org/10.1016/j.pce.2006.04.019.

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6

Mohajerani, M., P. Delage, M. Monfared, A. M. Tang, J. Sulem, and B. Gatmiri. "Oedometric compression and swelling behaviour of the Callovo-Oxfordian argillite." International Journal of Rock Mechanics and Mining Sciences 48, no. 4 (June 2011): 606–15. http://dx.doi.org/10.1016/j.ijrmms.2011.02.016.

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7

Montes, H. G., J. Duplay, L. Martinez, S. Escoffier, and D. Rousset. "Structural modifications of Callovo-Oxfordian argillite under hydration/dehydration conditions." Applied Clay Science 25, no. 3-4 (June 2004): 187–94. http://dx.doi.org/10.1016/j.clay.2003.10.004.

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8

Guéry, Ariane Abou-Chakra, Fabrice Cormery, Jian-Fu Shao, and Djimedo Kondo. "Micromechanics based modeling of the Callovo-Oxfordian argillite mechanical behavior." Mécanique & Industries 8, no. 3 (May 2007): 225–34. http://dx.doi.org/10.1051/meca:2007042.

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9

Mahjoub, Mohamed, Ahmed Rouabhi, Michel Tijani, Sylvie Granet, Sofia M’Jahad, and Jean Talandier. "Numerical Study of Callovo-Oxfordian Argillite Expansion due to Gas Injection." International Journal of Geomechanics 18, no. 1 (January 2018): 04017134. http://dx.doi.org/10.1061/(asce)gm.1943-5622.0001050.

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10

Zeng, T., J. F. Shao, and Y. Yao. "An upscaled model for elastoplastic behavior of the Callovo-Oxfordian argillite." Computers and Geotechnics 112 (August 2019): 81–92. http://dx.doi.org/10.1016/j.compgeo.2019.04.003.

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11

Boulin, Pierre Francois, Rafael Angulo-Jaramillo, Jean-Francois Daian, Jean Talandier, and Philippe Berne. "Experiments to estimate gas intrusion in Callovo-oxfordian argillites." Physics and Chemistry of the Earth, Parts A/B/C 33 (January 2008): S225—S230. http://dx.doi.org/10.1016/j.pce.2008.10.004.

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12

Di Donna, Alice, Pascal Charrier, Simon Salager, and Pierre Bésuelle. "Self-sealing capacity of argillite samples." E3S Web of Conferences 92 (2019): 03005. http://dx.doi.org/10.1051/e3sconf/20199203005.

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Many countries are currently facing the issue of finding a proper solution to store radioactive wastes coming from nuclear energy production plants. The possibility to store them in underground tunnels is largely considered and investigated. In France, Andra (Agence Nationale pour la gestion des Déchets Radioactifs) selected the Callovo-Oxfordian rock clay (COx) situated in the Meuse/Haute Marne site (France) between 400 and 600 m depth as possible host rock deposit. The excavation of the storage tunnels is expected to create a fractured zone around galleries. However, the factures will be then gradually re-saturated by the underground water coming from the surrounding rock mass and the fractures are expected to self-seal in contact with water, thanks to the swelling potential of COx. The capacity of self-sealing of COx, i.e. closing of fractures after water contact and possibly restoring of hydraulic permeability, is thus of primary interest for the safety of the storage system with respect to water, gas and solutes transport. In the work presented in this paper, the self-sealing behaviour of the COx argillite was investigated through x-ray tomography. The tested samples show significantly different responses depending on the zone where they have been collected on site. The results of mineralogical analyses (x-ray diffraction) are used to understand the observed phenomena.

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13

Descostes, M., V. Blin, F. Bazer-Bachi, P. Meier, B. Grenut, J. Radwan, M. L. Schlegel, S. Buschaert, D. Coelho, and E. Tevissen. "Diffusion of anionic species in Callovo-Oxfordian argillites and Oxfordian limestones (Meuse/Haute–Marne, France)." Applied Geochemistry 23, no. 4 (April 2008): 655–77. http://dx.doi.org/10.1016/j.apgeochem.2007.11.003.

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14

Descostes, M., and E. Tevissen. "Definition of an equilibration protocol for batch experiments on Callovo-Oxfordian argillite." Physics and Chemistry of the Earth, Parts A/B/C 29, no. 1 (January 2004): 79–90. http://dx.doi.org/10.1016/j.pce.2003.11.010.

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15

David, Christian, Philippe Robion, and Beatriz Menéndez. "Anisotropy of elastic, magnetic and microstructural properties of the Callovo-Oxfordian argillite." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 1-7 (January 2007): 145–53. http://dx.doi.org/10.1016/j.pce.2005.11.003.

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16

Zhang, Chunliang, and Tilmann Rothfuchs. "Experimental study of the hydro-mechanical behaviour of the Callovo-Oxfordian argillite." Applied Clay Science 26, no. 1-4 (August 2004): 325–36. http://dx.doi.org/10.1016/j.clay.2003.12.025.

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17

Rousseau-Gueutin, P., J. Gonçalvès, and S. Violette. "Osmotic efficiency in Callovo-Oxfordian argillites: Experimental vs. theoretical models." Physics and Chemistry of the Earth, Parts A/B/C 33 (January 2008): S106—S113. http://dx.doi.org/10.1016/j.pce.2008.10.064.

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18

Zhang, F., Y. Jia, H. B. Bian, and G. Duveau. "Modeling the influence of water content on the mechanical behavior of Callovo–Oxfordian argillite." Physics and Chemistry of the Earth, Parts A/B/C 65 (January 2013): 79–89. http://dx.doi.org/10.1016/j.pce.2013.05.007.

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19

Charlier, Robert, Frédéric Collin, Benoît Pardoen, Jean Talandier, Jean-Pol Radu, and Pierre Gerard. "An unsaturated hydro-mechanical modelling of two in-situ experiments in Callovo-Oxfordian argillite." Engineering Geology 165 (October 2013): 46–63. http://dx.doi.org/10.1016/j.enggeo.2013.05.021.

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20

Cariou, S., L. Dormieux, and F. Skoczylas. "An original constitutive law for Callovo-Oxfordian argillite, a two-scale double-porosity material." Applied Clay Science 80-81 (August 2013): 18–30. http://dx.doi.org/10.1016/j.clay.2013.05.003.

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21

Schäfer, T., P. Michel, F. Claret, T. Beetz, S. Wirick, and C. Jacobsen. "Radiation sensitivity of natural organic matter: Clay mineral association effects in the Callovo-Oxfordian argillite." Journal of Electron Spectroscopy and Related Phenomena 170, no. 1-3 (March 2009): 49–56. http://dx.doi.org/10.1016/j.elspec.2008.05.007.

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22

Zhang, Xiang, Gilles Duveau, and Jean-Baptiste Colliat. "Numerical prediction of gas migration properties in Callovo-Oxfordian (COx) argillite using morpho-mathematical operations." International Journal for Numerical and Analytical Methods in Geomechanics 42, no. 10 (April 6, 2018): 1125–43. http://dx.doi.org/10.1002/nag.2776.

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23

Zeng, Tao, Jian‐Fu Shao, and Yao Yao. "A micromechanical‐based elasto‐viscoplastic model for the Callovo‐Oxfordian argillite: Algorithms, validations, and applications." International Journal for Numerical and Analytical Methods in Geomechanics 44, no. 2 (December 2, 2019): 183–207. http://dx.doi.org/10.1002/nag.3006.

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24

Esteban, Lionel, Jean Luc Bouchez, and Alain Trouiller. "The Callovo-Oxfordian argillites from the eastern Paris Basin: Magnetic data and petrofabrics." Comptes Rendus Geoscience 338, no. 12-13 (October 2006): 867–81. http://dx.doi.org/10.1016/j.crte.2006.03.011.

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25

Lassin, Arnault, Nicolas Marty, Benoît Henry, Joachim Trémosa, Hélène Gailhanou, Benoît Madé, Scott Altmann, and Eric C. Gaucher. "Equilibrium Partial Pressure of CO2 in the Callovo-Oxfordian Argillite as a Function of Relative Humidity." Procedia Earth and Planetary Science 7 (2013): 459–62. http://dx.doi.org/10.1016/j.proeps.2013.03.083.

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26

Jia, Y., H. B. Bian, G. Duveau, K. Su, and J. F. Shao. "Numerical modelling of in situ behaviour of the Callovo–Oxfordian argillite subjected to the thermal loading." Engineering Geology 109, no. 3-4 (November 2009): 262–72. http://dx.doi.org/10.1016/j.enggeo.2009.08.012.

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27

Bazer-Bachi, F., E. Tevissen, M. Descostes, B. Grenut, P. Meier, M. O. Simonnot, and M. Sardin. "Characterization of iodide retention on Callovo-Oxfordian argillites and its influence on iodide migration." Physics and Chemistry of the Earth, Parts A/B/C 31, no. 10-14 (January 2006): 517–22. http://dx.doi.org/10.1016/j.pce.2006.04.015.

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28

Jougnot, D., and A. Revil. "Thermal conductivity of unsaturated clay-rocks." Hydrology and Earth System Sciences Discussions 5, no. 4 (August 28, 2008): 2409–23. http://dx.doi.org/10.5194/hessd-5-2409-2008.

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Abstract. The thermal conductivity of porous materials can be related to the electrical conductivity and therefore electrical resistivity tomography can be used to map the thermal conductivity of porous rocks. In this paper, a relationship is developed to connect the thermal conductivity of unsaturated clay-rocks to the thermal conductivity of the different phases of the porous composite, a textural parameter called the thermal formation factor, and the tortuosity of the water phase. The thermal formation factor is related to the electrical formation factor and to the first Archie's first exponent m. The tortuosity of the water phase is related to the second Archie's exponent n and to the relative saturation of the water phase. A very good agreement is obtained between the new model and thermal conductivity measurements of packs of glass beads and cores of the Callovo-Oxfordian argillite at different saturations of the water phase. Anisotropy of the effective thermal conductivity is mainly due to the anisotropy of the thermal conductivity of the solid phase.

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29

Bazer-Bachi, F., M. Descostes, E. Tevissen, P. Meier, B. Grenut, M. O. Simonnot, and M. Sardin. "Characterization of sulphate sorption on Callovo-Oxfordian argillites by batch, column and through-diffusion experiments." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 8-14 (January 2007): 552–58. http://dx.doi.org/10.1016/j.pce.2006.01.010.

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30

Lassin, Arnault, Nicolas C. M. Marty, Hélène Gailhanou, Benoît Henry, Joachim Trémosa, Catherine Lerouge, Benoît Madé, Scott Altmann, and Eric C. Gaucher. "Equilibrium partial pressure of CO2 in Callovian–Oxfordian argillite as a function of relative humidity: Experiments and modelling." Geochimica et Cosmochimica Acta 186 (August 2016): 91–104. http://dx.doi.org/10.1016/j.gca.2016.04.028.

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31

Pazdniakou, Aliaksei, and Magdalena Dymitrowska. "Migration of Gas in Water Saturated Clays by Coupled Hydraulic-Mechanical Model." Geofluids 2018 (2018): 1–25. http://dx.doi.org/10.1155/2018/6873298.

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Understanding the gas migration in highly water saturated sedimentary rock formations is of great importance for safety of radioactive waste repositories which may use these host rocks as barrier. Recent experiments on drainage in argillite samples have demonstrated that they cannot be represented in terms of standard two-phase flow Darcy model. It has been suggested that gas flows along highly localized dilatant pathways. Due to very small pore size and the opacity of the material, it is not possible to observe this two-phase flow directly. In order to better understand the gas transport, a numerical coupled hydraulic-mechanical model at the pore scale is proposed. The model is formulated in terms of Smoothed Particle Hydrodynamics (SPH) and is applied to simulate drainage within a sample reconstructed from the Focused Ion Beam (FIB) images of Callovo-Oxfordian claystone. A damage model is incorporated to take into account the degradation of elastic solid properties due to local conditions, which may lead to formation of new pathways and thus to modifications of fluid transport. The influence of the damage model as well as the possible importance of rigid inclusions is demonstrated and discussed.

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32

Savoye, Sébastien, Jacques Page, Céline Puente, Christophe Imbert, and Daniel Coelho. "New Experimental Approach for Studying Diffusion through an Intact and Unsaturated Medium: A Case Study with Callovo-Oxfordian Argillite." Environmental Science & Technology 44, no. 10 (May 15, 2010): 3698–704. http://dx.doi.org/10.1021/es903738t.

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33

Dupuy, C., A. Gharzouni, I. Sobrados, N. Tessier-Doyen, N. Texier-Mandoki, X. Bourbon, and S. Rossignol. "Formulation of an alkali-activated grout based on Callovo-Oxfordian argillite for an application in geological radioactive waste disposal." Construction and Building Materials 232 (January 2020): 117170. http://dx.doi.org/10.1016/j.conbuildmat.2019.117170.

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34

Kedziorek, Monika A. M., Alain C. M. Bourg, and Eric Giffaut. "Hydrogeochemistry of Sn(IV) in the context of radioactive waste disposal: Solubility and adsorption on MX-80 bentonite and Callovo-Oxfordian argilite." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 8-14 (January 2007): 568–72. http://dx.doi.org/10.1016/j.pce.2005.12.005.

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35

Kazmierczak, J. B., F. Laouafa, M. Ghoreychi, P. Lebon, and J. D. Barnichon. "Influence of creep on water pressure measured from borehole tests in the Meuse/Haute-Marne Callovo-Oxfordian argillites." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 8-14 (January 2007): 917–21. http://dx.doi.org/10.1016/j.pce.2006.01.008.

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36

Landrein, Philippe, Georges Vigneron, Jacques Delay, Patrick Lebon, and Maurice Pagel. "Lithologie, hydrodynamisme et thermicité dans le système sédimentaire multicouche recoupé par les forages Andra de Montiers-sur-Saulx (Meuse)." Bulletin de la Société Géologique de France 184, no. 6 (November 1, 2013): 519–43. http://dx.doi.org/10.2113/gssgfbull.184.6.519.

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AbstractDans le cadre du choix d’un site de stockage de déchets radioactifs de haute et moyenne activité à vie longue dans les argilites du Callovo-Oxfordien de Meuse/Haute-Marne, l’Andra (Agence nationale pour la gestion des déchets radioactifs) a réalisé 3 forages (EST431, EST432 et EST433) à partir d’une plate-forme implantée sur la commune de Montiers-sur-Saulx (Meuse) en position centrale d’une zone d’environ 250 km2 dite ≪ zone de transposition ≫.Les objectifs principaux des investigations ont été d’apporter des éléments pour la localisation du stockage potentiel et compléter les connaissances sur les formations encaissantes de la couche hôte (Dogger, Oxfordien carbonaté et Kimméridgien) mais également sur les formations profondes du Lias et du Trias. Plus précisément, ces derniers objectifs sont destinés à (i) acquérir une meilleure compréhension du fonctionnement global du système hydrogéologique et des échanges verticaux entre les formations et (ii) d’évaluer les ressources géothermiques potentielles sur la zone.Au-delà des objectifs liés aux problématiques de l’Andra, le forage le plus profond (EST433) a été échantillonné et étudié par plusieurs équipes de recherche associées dans le programme TAPSS (Transferts actuels et passés dans un système sédimentaire aquifère – aquitard) afin de répondre à des problématiques qui leur étaient propre. Cet article présente les données nécessaires à l’interprétation des données acquises par ces équipes et à la publication de leurs travaux.Les trois forages ont majoritairement été forés en destructif à l’exception du Kimméridgien marneux et du toit de l’Oxfordien carottés de 141 à 264 m de profondeur, du Callovo-Oxfordien et du sommet du Dogger carottés de 526 m à 770 m de profondeur. Certains horizons du Lias et du Trias ont également été carottés ponctuellement. De nombreuses diagraphies ont été réalisées entre les phases de forage ainsi que deux diagraphies thermiques 9 mois après le forage. La concaténation des données issues des trois forages a permis d’établir le log stratigraphique de la série du Tithonien au toit de l’Olénékien.Les informations du forage profond EST433 améliorent la connaissance de l’épaississement progressif de la couche du Callovo-Oxfordien vers le nord-est de la zone de transposition ainsi que la constance lithologique de celle-ci tant en vertical qu’en horizontal. Les perméabilités mesurées dans cette formation sont du même ordre de grandeur que celles observées dans les autres forages de la zone de transposition. Dans le Dogger, les variations de la perméabilité de certains niveaux sont liées aux environnements de dépôt. Les formations du Lias et du Trias sont conformes à celles dé-duites des forages antérieurs à l’exception des Marnes irisées inférieures (Keuper inférieur) plus épaisses que prévues. Les profils sismiques et les corrélations entre forages montrent l’existence d’une gouttière à l’aplomb du forage EST433 où les formations du Keuper (Carnien et Norien) sont plus épaisses. Les résultats du forage EST433 montrent également que les faciès du Lias et du Trias supérieur et moyen sont très peu poreux et que seule la base du Trias moyen (toit du Buntsandstein) contient des niveaux aquifères. Mille mètres de série sans porosité notable séparent l’aquifère du Dogger de celui du Trias inférieur.L’aquifère supérieur du Buntsandstein présente en test, entre 1862 et 1887 m de profondeur, une production d’eau à 66°C avec une salinité d’environ 180 g/l. La transmissivité calculée pour cet intervalle est de 1,1 10−3 m2/s. En comparaison avec les installations géothermiques exploitant l’aquifère du Dogger en région parisienne, la température mesurée sur EST433 est de l’ordre des températures exploitées les plus basses, la salinité nettement plus élevée (6,5 à 35 g/l en région parisienne) et la transmissivité du même ordre. Ces caractéristiques ne présentant pas un caractère exceptionnel (en termes de ressource potentielle pour une exploitation géothermique) associées au caractère argilo-gréseux de l’aquifère pouvant influer négativement sur la productivité d’un ouvrage ne font pas du Buntsandstein une ressource géothermique attractive dans les conditions technologiques et économiques actuelles.

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37

Claret, Francis, Thorsten Schäfer, Thomas Rabung, Manfred Wolf, Andreas Bauer, and Gunnar Buckau. "Differences in properties and Cm(III) complexation behavior of isolated humic and fulvic acid derived from Opalinus clay and Callovo-Oxfordian argillite." Applied Geochemistry 20, no. 6 (June 2005): 1158–68. http://dx.doi.org/10.1016/j.apgeochem.2005.01.008.

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38

Ababou, Rachid, Israel Cañamón Valera, and Adrien Poutrel. "Macro-permeability distribution and anisotropy in a 3D fissured and fractured clay rock: ‘Excavation Damaged Zone’ around a cylindrical drift in Callovo-Oxfordian Argilite (Bure)." Physics and Chemistry of the Earth, Parts A/B/C 36, no. 17-18 (January 2011): 1932–48. http://dx.doi.org/10.1016/j.pce.2011.07.032.

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39

Deniau, I., I. Devol-Brown, S. Derenne, F. Behar, and C. Largeau. "Comparison of the bulk geochemical features and thermal reactivity of kerogens from Mol (Boom Clay), Bure (Callovo–Oxfordian argillite) and Tournemire (Toarcian shales) underground research laboratories." Science of The Total Environment 389, no. 2-3 (January 2008): 475–85. http://dx.doi.org/10.1016/j.scitotenv.2007.09.013.

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40

Lassin, A., M. Dymitrowska, and M. Azaroual. "Hydrogen solubility in pore water of partially saturated argillites: Application to Callovo-Oxfordian clayrock in the context of a nuclear waste geological disposal." Physics and Chemistry of the Earth, Parts A/B/C 36, no. 17-18 (January 2011): 1721–28. http://dx.doi.org/10.1016/j.pce.2011.07.092.

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41

Distinguin, Marc, and Jean-Marc Lavanchy. "Determination of hydraulic properties of the Callovo-Oxfordian argillite at the bure site: Synthesis of the results obtained in deep boreholes using several in situ investigation techniques." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 1-7 (January 2007): 379–92. http://dx.doi.org/10.1016/j.pce.2006.02.056.

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42

Bénet, Luc-Vincent, Étienne Blaud, and Jacques Wendling. "Modelling of water and gas flow through an excavation damaged zone in the Callovo-Oxfordian argillites in the framework of a single porosity model." Geological Society, London, Special Publications 443, no. 1 (June 24, 2016): 319–32. http://dx.doi.org/10.1144/sp443.6.

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43

Prinzhofer, Alain, Jean Pierre Girard, Stéphane Buschaert, Yvon Huiban, and Sonia Noirez. "Chemical and isotopic characterization of hydrocarbon gas traces in porewater of very low permeability rocks: The example of the Callovo-Oxfordian argillites of the eastern part of the Paris Basin." Chemical Geology 260, no. 3-4 (March 2009): 269–77. http://dx.doi.org/10.1016/j.chemgeo.2008.12.021.

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44

Menut, Denis, Michael Descostes, Patrick Meier, Jean Radwan, Patrick Mauchien, and Christophe Poinssot. "Europium migration in Argilaceous Rocks : on the use of Micro Laser-Induced Breakdown Spectroscopy (micro LIBS) as a Microanalysis Tool." MRS Proceedings 932 (2006). http://dx.doi.org/10.1557/proc-932-20.1.

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ABSTRACTEu migration in a Callovo-Oxfordian argilite sample was studied using the micro LIBS technique. Quantitative elemental mapping were made by micro LIBS that showed the actual distribution of the various micro areas observed on the Callovo-Oxfordian sample's surface. Calcite, dolomite, alumino-silicates, quartz, pyrite and iron oxides were identified and their statistical distribution was determined. Experimental Eu profiles observed are consistent with diffusion process accompanied by heterogeneous sorption on alumino-silicate surface.

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Descostes, M., V. Blin, B. Grenut, P. Meier, and E. Tevissen. "HTO Diffusion in Oxfordian Limestone and Callovo-Oxfordian Argillite Formations." MRS Proceedings 824 (2004). http://dx.doi.org/10.1557/proc-824-cc8.29.

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AbstractDiffusion coefficients and accessible porosities for HTO were measured on 30 samples from the Andra Underground Rock Laboratory in Meuse/Haute-Marne (France) using the through diffusion technique. Two distinct geological formations were studied: Oxfordian limestone and Callovo-oxfordian argillite between 166 and 477 m depth. The experiences were carried out with synthetic pore-water from each formation. The measured values of the effective diffusion coefficients (De) are ranging from 2.6× 10-12 to 12.4 × 10-11 m2 s-1 while accessible porosities (ε) are between 2.4 and 24%. Good correlations are found between these two parameters.

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Revil, A. "Characterization of transport properties of argillaceous sediments: Application to the Callovo-Oxfordian argillite." Journal of Geophysical Research 110, B6 (2005). http://dx.doi.org/10.1029/2004jb003442.

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Dahhaoui, Hachimi, Naïma Belayachi, and Abdeldjalil Zadjaoui. "Modeling of Creep Behavior of an Argillaceous Rock by Numerical Homogenization Method." Periodica Polytechnica Civil Engineering, January 15, 2018. http://dx.doi.org/10.3311/ppci.11697.

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This paper is devoted to modeling the creep behavior of argillaceous rock and a comparison with experimental and numerical results from literature. The proposed time dependent modeling is based on a numerical homogenization method, matrix-inclusion material microstructure and a creep micromechanical model. The nonlinear viscosity of the argillaceous matrix is described by the creep model “Modified Time Hardening”, while classical linear elasticity is applied for the calcite and quartz inclusions. The simulation accuracy was analyzed under single and multistage creep test. A satisfactory agreement between the simulation and the experimental results are obtained by assuming the main mineral phases of the Callovo-Oxfordian argillite. It was found that better agreements could be obtained when the multi-scale modeling is performed on sample with a given mineralogical composition and much more precisely volume fraction. The results show how numerical homogenization method is capable of effectively modelling macroscopic creep deformation.

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Plas, Frederic, and Jacques WENDLING. "The geological research in France - The Dosssier 2005 Argile." MRS Proceedings 985 (2006). http://dx.doi.org/10.1557/proc-985-0985-nn13-01.

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AbstractAt the end of fifteen years of researchs defined by the French act of December 30, 1991 on radwaste management, Andra gave a report, “Dossier Argile 2005”, which concluded with the feasibility of a reversible disposal in the argillaceous Callovo-Oxfordien formation studied by means of an underground research laboratory at Meuse/Haute-Marne site. Starting from source data like the characteristics of the geological medium and the waste inventory, the process followed by Andra to achieve at this conclusion is of type sequential and iterative between concept design, scientific knowledge, in particular that of the phenomenological evolution of the reposiroty and its geological environment from operating period to long term, and Safety assessment. The “Dossier Argile 2005” covers a broad radwaste inventory, ILLW, HLW and Spent Fuel, so that it makes it possible to cover whole of the technological, scientific and safety topics. This article will give an overview of the geological disposal studies in France and draw the main conclusion of the Dossier 2005 Argile. It will be focused on the near field (Engineering components and near field host rock), while considering if necessary its integration within the whole system. After a short description of the concepts (incl. waste inventory and the characteristics of the Meuse/Haute the Marne site) and the functions of the components of repository and geological medium, one will describe successively the broad outline of the phenomenological evolution of repository and the geological medium in near field, by in particular releasing the time scales of processes and uncertainties of knowledge. On this basis, one will indicate the safety scenarios which were considered and the broad outline of performance and dose calculations. Lessons learn from the Dossier 2005 Argile will be discussed and perspective and priority for future will be indicated.

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Latrille, C., J. Ly, and M. Herbette. "Retention of Sn(IV) and Pu(IV) onto four argillites from the Callovo–Oxfordian level at Bure (France) from eight equilibrated sedimentary waters." Radiochimica Acta 94, no. 8 (January 1, 2006). http://dx.doi.org/10.1524/ract.2006.94.8.421.

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SummaryWithin the framework of studies concerning the migration of radionuclides in a potential nuclear waste disposal host rock, the retention properties of clayey materials towards Sn(IV) and Pu(IV) are approached. Chemical sorption is quantified with the partitioning coefficient

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