Jenni, Andreas

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2023

Bernard, Ellina; Jenni, Andreas; Toropovs, Nikolajs; Mäder, Urs (2023). Percolation experiment across a 10-year-old interface between Opalinus Clay and Portland concrete. Cement and concrete research, 170, p. 107180. Elsevier 10.1016/j.cemconres.2023.107180

Wersin, Paul; Hadi, Jebril; Kiczka, Mirjam; Jenni, Andreas; Grenèche, Jean‐Marc; Diomidis, Nikitas; Leupin, Olivier X.; Svensson, Daniel; Sellin, Patrik; Reddy, Bharti; Smart, Nicholas; Zhang, Zhidong (2023). Unravelling the corrosion processes at steel/bentonite nterfaces in in situ tests. Materials and corrosion, 74(11-12), pp. 1716-1727. Wiley 10.1002/maco.202313755

Kiczka, M.; Wersin, P.; Mazurek, M.; Zwahlen, C.; Jenni, A.; Mäder, U.; Traber, D. (2023). Porewater composition in clay rocks explored by advective displacement and squeezing experiments. Applied geochemistry, 159, p. 105838. Elsevier 10.1016/j.apgeochem.2023.105838

2021

Jenni, Andreas; Meeussen, Johannes C.L.; Pakkanen, Tapani A.; Hirvi, Janne T.; Akinwunmi, Bukunmi; Yustres, Ángel; Navarro, Vicente; López-Vizcaíno, Rubén; Muuri, Eveliina; Niskanen, Mika; Wersin, Paul; Mäder, Urs (2021). Coupling of chemical and hydromechanical properties in bentonite: A new reactive transport model. Applied Clay Science, 214(106274), p. 106274. Elsevier 10.1016/j.clay.2021.106274

Pekala, Marek; Wersin, Paul; Pastina, Barbara; Lamminmäki, Ralf; Vuorio, Marja; Jenni, Andreas (2021). Potential impact of cementitious leachates on the buffer porewater chemistry in the Finnish repository for spent nuclear fuel – A reactive transport modelling assessment. Applied geochemistry, 131, p. 105045. Elsevier 10.1016/j.apgeochem.2021.105045

Jenni, Andreas; Mäder, Urs (2021). Reactive Transport Simulation of Low-pH Cement Interacting with Opalinus Clay Using a Dual Porosity Electrostatic Model. Minerals, 11(7), p. 664. MDPI 10.3390/min11070664

Navarro, Vicente; Yustres, Ángel; Jenni, Andreas; De la Morena, Gema; Asensio, Laura; López-Vizcaíno, Rubén; Cabrera, Virginia; Wersin, Paul; Mäder, Urs; Muuri, Eveliina; Niskanen, Mika; Akinwunmi, Bukunmi; Hirvi, Janne T.; Pakkanen, Tapani A. (2021). Molecular dynamics data for modelling the microstructural behaviour of compacted sodium bentonites. Applied Clay Science, 201, p. 105932. Elsevier 10.1016/j.clay.2020.105932

Yokoyama, Shingo; Shimbashi, Misato; Minato, Daisuke; Watanabe, Yasutaka; Jenni, Andreas; Mäder, Urs (2021). Alteration of Bentonite Reacted with Cementitious Materials for 5 and 10 Years in the Mont Terri Rock Laboratory (CI Experiment). Minerals, 11(3), p. 251. MDPI 10.3390/min11030251

Wersin, Paul; Hadi, Jebril; Jenni, Andreas; Svensson, Daniel; Greneche, Jean-Marc; Sellin, Patrik; Leupin, Olivier (2021). Interaction of Corroding Iron with Eight Bentonites in the Alternative Buffer Materials Field Experiment (ABM2). Minerals, 11(8), p. 907. MDPI 10.3390/min11080907

2020

Gaboreau, Stephane; Rodríguez-Cañas, Enrique; Maeder, Urs; Jenni, Andreas; Turrero, Maria Jesús; Cuevas, Jaime (2020). Concrete perturbation in a 13-year in situ concrete/bentonite interaction from FEBEX experiments. New insight of 2:1 Mg phyllosilicate precipitation at the interface. Applied geochemistry, 118, p. 104624. Elsevier 10.1016/j.apgeochem.2020.104624

Bernard, Ellina; Jenni, Andreas; Fisch, Martin; Grolimund, Daniel; Mäder, Urs (2020). Micro-X-ray diffraction and chemical mapping of aged interfaces between cement pastes and Opalinus Clay. Applied geochemistry, 115, p. 104538. Elsevier 10.1016/j.apgeochem.2020.104538

Wersin, P.; Pekala, M.; Mazurek, M.; Gimmi, T.; Mäder, U.; Jenni, A.; Rufer, D.; Aschwanden, L. (2020). Porewater Chemistry of Opalinus Clay: Methods, Data, Modelling & Buffering Capacity (Technical Report, Nagra 18-01). NAGRA, National Cooperative for the Disposal of Radioactive Waste

2019

Jenni, Andreas; Wersin, Paul; Thoenen, T.; Baeyens, B.; Ferrari, A.; Gimmi, Thomas; Mäder, Urs; Marschall, P.; Hummel, W.; Leupin, O. (2019). Bentonite backfill performance in a high-level waste repository: a geochemical perspective (Technical Report, Nagra NTB 19-03). Wettingen, Switzerland: NAGRA, National Cooperative for the Disposal of Radioactive Waste

2018

Alt-Epping, Peter; Gimmi, Thomas; Wersin, Paul; Jenni, Andreas (2018). Incorporating electrical double layers into reactive-transport simulations of processes in clays by using the Nernst-Planck equation: A benchmark revisited. Applied geochemistry, 89, pp. 1-10. Elsevier 10.1016/j.apgeochem.2017.10.018

Jenni, Andreas; Mäder, Urs (2018). Coupling of chemical and hydromechanical properties in bentonite. Applied geochemistry, 97, pp. 147-156. Elsevier 10.1016/j.apgeochem.2018.08.013

2017

Hadi, J.; Wersin, P.; Jenni, A.; Greneche, J. M. (2017). Redox evolution and Fe-bentonite interaction in the ABM2 experiment, Äspö Hard Rock Laboratory (Technical Report NTB 2017-10). Nagra

Mäder, Urs; Jenni, Andreas; Lerouge, Cathérine; Gaboreau, Stephane; Miyoshi, Satoru; Kimura, Yukinobu; Cloet, Veerle; Fukaya, Masaaki; Claret, Francis; Otake, Tsubasa; Shibata, Masahito; Lothenbach, Babara (2017). 5-year chemico-physical evolution of concrete–claystone interfaces, Mont Terri rock laboratory (Switzerland). Swiss journal of geosciences, 110(1), pp. 307-327. Springer 10.1007/s00015-016-0240-5

Yustres, A.; Jenni, Andreas; Asensio, L.; Pintado, X.; Koskinen, K.; Navarro, V.; Wersin, Paul (2017). Comparison of the hydrogeochemical and mechanical behaviours of compacted bentonite using different conceptual approaches. Applied Clay Science, 141, pp. 280-291. Elsevier 10.1016/j.clay.2017.03.006

Jenni, Andreas; Gimmi, Thomas; Alt-Epping, Peter; Mäder, Urs; Cloet, V (2017). Interaction of ordinary Portland cement and Opalinus Clay: Dual porosity modelling compared to experimental data. Physics and chemistry of the earth, 99, pp. 22-37. Elsevier 10.1016/j.pce.2017.01.004

Lerouge, Catherine; Gaboreau, Stéphane; Grangeon, Sylvain; Claret, Francis; Warmont, Fabienne; Jenni, Andreas; Cloet, Veerle; Mäder, Urs (2017). In situ interactions between Opalinus Clay and Low Alkali Concrete. Physics and chemistry of the earth, 99, pp. 3-21. Elsevier 10.1016/j.pce.2017.01.005

Mäder, Urs; Jenni, Andreas; Naumann, B.; Reichenwallner, Simon; Cloet, V. (2017). CI Experiment: 4th Sampling Campaign (2017) for 10-year-old interfaces of OPA with OPC/LAC/ESDRED concrete, MX-80 bentonite with OPC/LAC, and 2-year-old interfaces of OPA with Belgian super container concrete and Japanese HFSC St. Ursanne, Switzerland: Mont Terri Project

Fisch, Martin; Jenni, Andreas; Mäder, Urs; Grolimund, D.; Cloet, V. (2017). CI Experiment: Micro-XRD studies on 3.2-year-old interfaces between Opalinus Clay and OPC and ESDRED mortar (3rd sampling campaign 2015) St. Ursanne, Switzerland: Mont Terri Project

2016

Dolder, Florian Dominik; Mäder, Urs; Jenni, Andreas; Münch, B. (2016). Alteration of MX-80 bentonite backfill material by high-pH cementitious fluids under lithostatic conditions – an experimental approach using core infiltration techniques. Geological Society Special Publications, 443(1), pp. 281-305. Geological Society 10.1144/sp443.10

2015

Dolder, Florian Dominik; Mäder, Urs; Jenni, Andreas (2015). Experimental Characterization and Quantification of Cement-Bentonite Interaction using Core Infiltration Techniques Coupled with X-ray Tomography (In Press). (Dissertation, Institut für Geologie, Philosophischen-naturwissenschaftlichen Fakultät)

Dolder, Florian Dominik; Mäder, Urs; Jenni, Andreas; Münch, Beat (23 March 2015). Stability of bentonite under high-pH conditions: An experimental approach including modeling (Unpublished). In: 6th international conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement. Brüssel. 23.-26.03.2015.

Wersin, Paul; Jenni, Andreas; Mäder, Urs (2015). Interaction of corroding iron with bentonite in the ABM1 experiment at Äspö, Sweden: A microscopic approach. Clays and clay minerals, 63(1), pp. 51-68. Clay Minerals Society 10.1346/ccmn.2015.0630105

Jenni, Andreas; Mäder, Urs; Wieland, E.; Lerouge, C.; Gaboreau, S. (2015). Concrete-clay interaction: give-and-take without a loser? (Unpublished). In: 6th Meeting on Clays in Natural and Engineered Barrier for Radioactive Waste Confinement. Brussels, Belgium.

Jenni, Andreas; Mäder, Urs (2015). FE-C Experiment: Investigation of the interface between Opalinus Clay and the shotcrete used in the FE tunnel (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

2014

Dolder, Florian Dominik; Mäder, Urs; Jenni, Andreas (21 November 2014). Stability of bentonite under high-pH conditions (Unpublished). In: 12th Swiss Geoscience Meeting. Fribourg. 21.-22.11.2014.

Dolder, Florian; Mäder, Urs; Jenni, Andreas; Schwendener, Nicole (2014). Experimental characterization of cement–bentonite interaction using core infiltration techniques and 4D computed tomography. Physics and chemistry of the earth, 70-71, pp. 104-113. Elsevier 10.1016/j.pce.2013.11.002

Jenni, Andreas; Mäder, Urs; Lerouge, C.; Gaboreau, S.; Schwyn, B. (2014). In-situ interaction between different concretes and Opalinus Clay. Physics and chemistry of the earth, 70-71, pp. 71-83. Elsevier 10.1016/j.pce.2013.11.004

Dähn, Rainer; Popov, Dmitry; Schaub, Philippe; Pattison, Philip; Grolimund, Daniel; Mäder, Urs; Jenni, Andreas; Wieland, Erich (2014). In-situ X-ray micro-diffraction studies of heterogeneous interfaces between cementitious materials and geological formations. Physics and chemistry of the earth, 70-71, pp. 96-103. Elsevier 10.1016/j.pce.2013.10.010

Alt-Epping, Peter; Tournassat, C.; Rasouli, P.; Steefel, C. I.; Mayer, K. U.; Jenni, Andreas; Mäder, Urs; Sengor, S. S.; Fernández, R. (2014). Benchmark reactive transport simulations of a column experiment in compacted bentonite with multispecies diffusion and explicit treatment of electrostatic effects. Computational geosciences, 19(3), pp. 535-550. Baltzer Science Publishers 10.1007/s10596-014-9451-x

Mäder, Urs; Jenni, Andreas; Dolder, Florian Dominik (2014). CI Experiment: Sample preparation and sample inventory of the 2nd sampling campaign (2012) for concrete/Opalinus Clay and concrete/MX-80 bentonite interfaces (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

Mäder, Urs; Eul, A.; Jenni, Andreas; Frieg, B.; Dolder, Florian Dominik (2014). CI Experiment: Sampling by stabilized overcoring for the 2nd campaign (2012) (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

Jenni, Andreas; Mäder, Urs; Lerouge, C.; Gaboreau, S. (2014). CI Experiment: Synthesis of in-situ interaction for 2.2 y between different concretes and Opalinus Clay (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

Jenni, Andreas; Mäder, Urs (2014). CI (Cement Clay Interaction) Experiment: SEM/EDX characterisation of concrete/Opalinus Clay interfaces from 2nd sampling campaign and comparison to state after 1st sampling (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

Jenni, Andreas; Mäder, Urs (2014). CI (Cement Clay Interaction) Experiment: Set-up and first results for modelling of concrete/Opalinus Clay interfaces (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

2013

Dolder, Florian Dominik; Mäder, Urs; Jenni, Andreas (25 August 2013). Tracking high-pH reaction fronts in MX-80 bentonite using infiltration techniques and 4D CT (Unpublished). In: Goldschmidt Conference. Florence. 25.-30.08.2013.

2012

Dolder, Florian Dominik; Jenni, Andreas; Mäder, Urs (22 October 2012). Experimental characterization of cement-bentonite interaction using core infiltration techniques coupled with 4D X-ray tomography (Unpublished). In: Physics and Chemistry of the Earth. Montpellier. 22 – 25 October 2012.

2010

Jenni, Andreas; Hyatt, N. C. (2010). Encapsulation of caesium-loaded Ionsiv in cement. Cement and concrete research, 40(8), pp. 1271-1277. Elsevier 10.1016/j.cemconres.2009.10.015

Hyatt, N. C.; Jenni, Andreas; Stennett, M. C. (2010). Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal. Materials Research Society Symposium Proceedings, 1265, pp. 221-226. Materials Research Society

2009

Hyatt, N. C.; Stennett, M.; Jenni, Andreas; Reid, D.; Maddrell, E. R. (2009). Ceramic formulation and processing design for plutonium disposition. Materials Research Society Symposium Proceedings, 1193, pp. 61-66. Materials Research Society

Mäder, Urs; Jenni, Andreas (2009). CI Experiment: First sampling campaign of the in-situ experiment to recover concrete/Opalinus Clay interfaces after 2.2 years (Arbeitsbericht). St. Ursanne, Switzerland: Mont Terri Project

Jenni, Andreas; Stennett, M. C.; Hyatt, N. C. (2009). Strategies for disposition of separated PuO2: Durability benchmarking Nexia Solutions

2008

Jenni, Andreas; Stennett, M. C.; Hyatt, N. C. (2008). Strategies for disposition of separated PuO2: Reduction of Ce (Pu surrogate) Nexia Solutions

Jenni, Andreas; Stennett, M. C.; Hyatt, N. C. (2008). Strategies for disposition of separated PuO2: Effect of pre-treatment of wasteform precursor batch on cold press and sintering of zirconolite Nexia Solutions

Jenni, Andreas; Stennett, M. C.; Hyatt, N. C. (2008). Strategies for disposition of separated PuO2: Effect of milling on sinter and HIP of zirconolite Nexia Solutions

2007

Zurbriggen, R.; Herwegh, Marco; Jenni, Andreas; De Gasparo, Alex; Holzer, L.; Aberle, T. (2007). The influence of organic additives on the microstructural development and properties of mortars. ZKG International, 60(2), pp. 62-73. Bauverlag BV, Gütersloh

Jenni, Andreas; Stennett, M. C.; Hyatt, N. C. (2007). Strategies for disposition of separated PuO2: Am3+ impurities in Pu feedstock Nexia Solutions

2006

Jenni, Andreas; Zurbriggen, Roger; Holzer, Lorenz; Herwegh, Marco (2006). Changes in microstructures and physical properties of polymer-modified mortars during wet storage. Cement and concrete research, 36(1), pp. 79-90. Oxford: Elsevier 10.1016/j.cemconres.2005.06.001

Scheidegger, A. M.; Vespa, M.; Wieland, E.; Harfouche, M.; Grolimund, D.; Dähn, R.; Jenni, Andreas; Scrivener, K. (2006). Micro-scale chemical speciation of highly heterogeneous cementitious materials using synchrotron-based X-ray absorption spectroscopy. CHIMIA, 60(3), p. 149. Schweizerische Chemische Gesellschaft

Herwegh, Marco; Zurbriggen, R.; Scrivener, K.; De Gasparo, Alex; Kighelman, J.; Jenni, Andreas (2006). A comparison between tile adhesive mortars and resulting microstructures in thin-bed mortars. Tagungsband ibausil, 2, pp. 1059-1066.

Jenni, Andreas; Scrivener, Karen (2006). 28 day strength prediction of concrete: Influence of admixtures W.R. Grace confidental report

2005

Jenni, Andreas; Holzer, L.; Zurbriggen, R.; Herwegh, Marco (2005). Influence of polymers on microstructure and adhesive strength of cementitious tile adhesive mortars. Cement and concrete research, 35(1), pp. 35-50. Elsevier 10.1016/j.cemconres.2004.06.039

2003

Jenni, Andreas; Herwegh, Marco; Zurbriggen, R.; Aberle, T.; Holzer, L. (2003). Quantitative microstructure analysis of polymer-modified mortars. Journal of microscopy, 212(2), pp. 186-196. Wiley-Blackwell 10.1046/j.1365-2818.2003.01230.x

Jenni, Andreas (2003). Microstructural Evolution and Physical Properties of Polymer-Modified Mortars (Unpublished). (Dissertation, University of Bern, Institute of Geological Sciences)

2001

Herwegh, Marco; Jenni, Andreas (2001). Granular flow in polymineralic rocks bearing sheet silicates: New evidence from natural examples. Tectonophysics, 332(3), pp. 309-320. Elsevier

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