Publications

Yustres A., Jenni A., Asensio L., Pintado X., Koskinen K., Navarro V. & Wersin P., 2017+-

Publication

Comparison of the hydrogeochemical and mechanical behaviours of compacted bentonite... Read more

Comparison of the hydrogeochemical and mechanical behaviours of compacted bentonite using different conceptual approaches. Applied Clay Science, Volume 141, 280-291.

Toprak E., Olivella S. & Pintado X., 2016+-

Publication

Coupled THM modelling of engineered barriers for the final disposal... Read more

Coupled THM modelling of engineered barriers for the final disposal of spent nuclear fuel isolation. Geological Society, London, Special Publications, 443. doi:10.1144/SP443.19 

Kumpulainen S., Kiviranta L. & Korkeakoski P., 2016+-

Publication

Long-term effects of an iron heater and Äspö groundwater on... Read more

Long-term effects of an iron heater and Äspö groundwater on smectite clays: Chemical and hydromechanical results from the in situ alternative buffer material (ABM) test package 2. Clay Minerals, 51, 2, 129-144. doi:10.1180/claymin.2016.051.2.02

Grolimund D., Wersin P., Brendlé J., Huve J., Kiviranta L. & Snellman M., 2016 +-

Publication

Interaction of titanium with smectite within the scope of a... Read more

Interaction of titanium with smectite within the scope of a spent fuel repository: A spectroscopic approach. Clay Minerals, 51, 2, 249-266. doi:10.1180/claymin.2016.051.2.11

Navarro V., Asensio L., Yustres Á., De la Morena G. & Pintado X., 2015+-

Publication

Swelling and mechanical erosion of MX-80 bentonite: Pinhole test simulation. Read more

Swelling and mechanical erosion of MX-80 bentonite: Pinhole test simulation. Engineering Geology, 202, 99113.

Navarro V., Asensio L., De la Morena G., Pintado X. & Yustres Á., 2015+-

Publication

Differentiated intra- and inter-aggregate water content models of MX-80 bentonite. Read more

Differentiated intra- and inter-aggregate water content models of MX-80 bentonite. Applied Clay Science, 118, 325–336.

Pintado X., Schatz T. & Garcia-Siñeriz J.-L., 2015+-

Publication

Initial data report for the Multi Purpose Test. Read more

Initial data report for the Multi Purpose Test. Lucoex D4:06, Community Research, European Commission.

Lavikainen L.P., Hirvi J.T., Kasa S., Schatz T. & Pakkanen T.A., 2015+-

Publication

Stability of dioctahedral 2:1 phyllosilicate edge structures based on pyrophyllite models. Read more

Stability of dioctahedral 2:1 phyllosilicate edge structures based on pyrophyllite models. Theoretical Chemistry Accounts, 134, 112.

Sun L., Hirvi J.T., Schatz T., Kasa S. & Pakkanen T.A., 2015+-

Publication

Estimation of montmorillonite swelling pressure: a molecular dynamics approach. Read more

Estimation of montmorillonite swelling pressure: a molecular dynamics approach. Journal of Physical Chemistry C, 119 (34), 19863–19868.

Hedström M., Nilsson U. & Eriksson R., 2015+-

Publication

Rheology of attractive and repulsive montmorillonite/bentonite gels. Read more

Rheology of attractive and repulsive montmorillonite/bentonite gels. BELBaR D4.9, Community Research, European Commision.

Linlin S., Tanskanen J. T., Hirvi J. T., Kasa S., Schatz T. & Pakkanen T. A., 2015+-

Publication

Molecular dynamics study of montmorillonite crystalline swelling: Roles of interlayer... Read more

Molecular dynamics study of montmorillonite crystalline swelling: Roles of interlayer cation species and water content. Chemical Physics, 455, 23-31.

Lavikainen L. P., Tanskanen J. T., Schatz T., Kasa S. & Pakkanen T., 2015+-

Publication

Montmorillonite interlayer surface chemistry: effect of magnesium ion substitution on... Read more

Montmorillonite interlayer surface chemistry: effect of magnesium ion substitution on cation adsorption. Theoretical Chemistry Accounts, April 2014, 132-51.

Bendito E. & Pintando X., 2015+-

Publication

Monitoring of swelling pressure in bentonite. Environmental Geotechnics. DOI: 10.1680/envgeo.14.00007 Read more

Monitoring of swelling pressure in bentonite. Environmental Geotechnics. DOI: 10.1680/envgeo.14.00007

Eriksson R. & Schatz T., 2015+-

Publication

Rheological properties of clay material at the solid/solution interface formed... Read more

Rheological properties of clay material at the solid/solution interface formed under quasi-free swelling conditions. Appl. Clay Sci. 108, 12-18. DOI: 10.1016/j.clay.2015.02.018

Navarro V., Asensio L., Yustres Á., Pintado X. & Alonso J., 2014+-

Publication

An elastoplastic model of bentonite free swelling. Engineering Geology, 181, 190-201.

An elastoplastic model of bentonite free swelling. Engineering Geology, 181, 190-201.

Navarro, V., Asensio, L., Alonso, J., Yustres, Á. & Pintado, X., 2014+-

Publication

Multiphysics implementation of advanced soil mechanics models. Read more

Multiphysics implementation of advanced soil mechanics models. Computers and Geotechnics, 60, 20-28.

Asensio L., 2014+-

Publication

Hydro-mechanical elastoplastic model of expansive bentonite behaviour in free swelling conditions. Read more

Hydro-mechanical elastoplastic model of expansive bentonite behaviour in free swelling conditions. PhD Thesis, University of Castilla-La Mancha.

Autio J., Hassan Md. M., Karttunen P. & Keto P., 2013+-

Publication

Backfill design 2012. Posiva Report 2012-15 Read more

Backfill design 2012.
Posiva Report 2012-15

Pintado X., Hassan Md. M. & Martikainen J., 2013+-

Publication

Thermo-Hydro-Mechanical Tests of Buffer Material.Posiva Report 2012-49 Read more

Thermo-Hydro-Mechanical Tests of Buffer Material.
Posiva Report 2012-49

Pintado X., Adesola F. & Turtiainen M., 2013+-

Publication

Downscaled Tests on Buffer Behaviour.  Posiva Working Report 2012-100 Read more

Downscaled Tests on Buffer Behaviour. 
Posiva Working Report 2012-100

Pintado X. & Rautioaho E., 2013+-

Publication

Thermo-Hydraulic Modelling of Buffer and Backfill.Posiva Report 2012-48 Read more

Thermo-Hydraulic Modelling of Buffer and Backfill.
Posiva Report 2012-48

Sane P. (ed.), Laurila T., Olin M. & Koskinen K., 2013+-

Publication

Current Status of Mechanical Erosion Studies of Bentonite Buffer.Posiva report... Read more

Current Status of Mechanical Erosion Studies of Bentonite Buffer.
Posiva report 2012-45

Schatz T., Kanerva N., Martikainen J., Sane P., Olin M., Seppälä A. & Koskinen K., 2013+-

Publication

Buffer Erosion in Dilute Groundwater. Posiva Report 2012-44 Read more

Buffer Erosion in Dilute Groundwater.
Posiva Report 2012-44

Toprak E., Mokni N., Olivella S. & Pintado X., 2013+-

Publication

Thermo-Hydro-Mechanical Modelling of Buffer, Synthesis Report. Posiva Report 2012-47 Read more

Thermo-Hydro-Mechanical Modelling of Buffer, Synthesis Report.
Posiva Report 2012-47

Navarro V., Asensio L., Yustres Á., Pintado X. & Alonso J., 2013+-

Publication

Volumetric deformability and water mass exchange of bentonite aggregates. Read more

Volumetric deformability and water mass exchange of bentonite aggregates. Engineering Geology, 166, 152-159

B+Tech contributed to Posiva Report 2013-1+-

Publication

Safety Case for the Disposal of Spent Nuclear Fuel at... Read more

Safety Case for the Disposal of Spent Nuclear Fuel at Olkiluoto - Models and Data for the Repository System 2012 (Posiva Report 2013-1, Part 1 and Part 2), regarding mechanical erosion, chemical erosion and thermal, hydraulic & mechanical evolution of buffer and backfill. Contributions to report by Laurila T., Martikainen J., Pintado X., Sane P. and Schatz T.

Olsson S., Jensen V., Johannesson L.-E., Hansen E., Karnland O., Kumpulainen S., Kiviranta L., Svensson D., Hansen S. & Lindén J., 2013+-

Publication

Prototype Repository. Read more

Prototype Repository. Hydro-mechanical, chemical and mineralogical characterization of the buffer and tunnel backfill material from the outer section of the Prototype Repository.
Svensk Kärnbränslehantering AB, TR-13-21.

Saanio T., Ikonen A., Keto P., Kirkkomäki T., Kukkola T., Nieminen J. & Raiko H., 2013+-

Publication

Loppusijoituslaitoksen suunnitelma 2012. Posiva Working Report 2012-50 Read more

Loppusijoituslaitoksen suunnitelma 2012. 
Posiva Working Report 2012-50

Keto P. (ed.), Hassan Md. M., Karttunen P., Kiviranta L., Kumpulainen S., Korkiala-Tanttu L., Koskinen V., Jalonen T., Koho P. & Sievänen U., 2013+-

Publication

Backfill Production Line 2012. Read more

Backfill Production Line 2012. Design, production and initial state of the deposition tunnel backfill and plug.
Posiva Report 2012-18

Heikola T., Kumpulainen S., Vuorinen, U., Kiviranta L., & Korkeakoski P.+-

Publication

Influence of alkaline (pH 8.3-12.0) and saline solutions on chemical,... Read more

Influence of alkaline (pH 8.3-12.0) and saline solutions on chemical, mineralogical and physical properties of two different bentonites.
Clay Minerals. Mineralogical Society. Vol. 48 (2013) No: 2, 309 - 329

Dohrmann R., Genske D., Karnland O., Kaufhold S., Kiviranta L., Olsson S., Plötze M., Sandén T., Sellin P., Svensson D. & Valter M., 2012+-

Publication

Interlaboratory CEC and exchangeable cation study of bentonite buffer materials: II. Read more

Interlaboratory CEC and exchangeable cation study of bentonite buffer materials: II. Alternative methods.
Clays and Clay Minerals 60, 176-185

Dohrmann R., Genske D., Karnland O., Kaufhold S., Kiviranta L., Olsson S., Plötze M., Sandén T., Sellin P., Svensson D. & Valter M., 2012+-

Publication

Interlaboratory CEC and exchangeable cation study of bentonite buffer materials: I. Read more

Interlaboratory CEC and exchangeable cation study of bentonite buffer materials: I. Cu(II)-triethylenetetramine method.
Clays and Clay Minerals 60, 162-175

Åkesson M., Olsson S., Dueck A., Nilsson U., Karnland O., Kiviranta L., Kumpulainen S. & Lindén J., 2012+-

Publication

Temperature buffer test. Hydro-mechanical and chemical/mineralogical characterizations.Svensk Kärnbränslehantering AB, P-12-06 Read more

Temperature buffer test. Hydro-mechanical and chemical/mineralogical characterizations.
Svensk Kärnbränslehantering AB, P-12-06

Kiviranta, L. & Kumpulainen, S., 2011+-

Publication

Quality control and characterization of bentonite materials. Read more

Quality control and characterization of bentonite materials. Before bentonite material is taken into use in performance testing, the quality of the material needs to be checked. Three high grade bentonite materials: two natural Na-bentonites from Wyoming, and one natural Ca-bentonite from Milos, were characterized.
Posiva Working Report 2011-84

Wersin, P., Grolimund, D., Kumpulainen, S., Kiviranta, L., Brendlé, J. & Snellman, M., 2010+-

Publication

Titanium alloys as alternative material for the supercontainer shell in... Read more

Titanium alloys as alternative material for the supercontainer shell in the KBS-3H concept. A preliminary study.
Posiva Working Report 2010-72

Kumpulainen, S., Kiviranta, L., Carlsson, T., Muurinen, A., Svensson, D., Sasamoto, H., Yui M. & Wersin, P., 2010+-

Publication

Long-term alteration of bentonite in the presence of metallic iron. Read more

Long-term alteration of bentonite in the presence of metallic iron. This report presents results from two iron-bentonite experiments carried out under quite different conditions at VTT (Finland) and JAEA (Japan). Both studies focused on long-term iron-bentonite interactions under anaerobic conditions.
Posiva Working Report 2010-71

Martikainen, J. & Schatz, T., 2011+-

Publication

Laboratory tests to determine the effect of Olkiluoto bounding brine... Read more

Laboratory tests to determine the effect of Olkiluoto bounding brine water on buffer performance.
Posiva Working Report 2011-68

Kumpulainen, S. & Kiviranta, L., 2011+-

Publication

Mineralogical, Chemical and Physical Study of Potential Buffer and Backfill... Read more

Mineralogical, Chemical and Physical Study of Potential Buffer and Backfill Materials from ABM Test Package 1.
Posiva Working Report 2011-41

Certified Quality Management System+-

Article

Despite its relative young age, B+Tech worked quickly to implement... Read more

Despite its relative young age, B+Tech worked quickly to implement a quality management system which adheres to the principles of the ISO 9001-, ISO 14001- and OHSAS 18001 standards. The B+Tech quality management system was recently certified as fulfilling the requirements of ISO 9001:2008 by SFK Certification.
Read the full article in Finnish

B+Tech Oy - unique research in Finland+-

Article

B+Tech is the only company in Finland, which is specialized... Read more

B+Tech is the only company in Finland, which is specialized in research and development of bentonite clay and similar materials, used among others in nuclear waste repositories, in environmental protection applications and in industry.

Read the full article (in Finnish) in PDF-format, ATS Ydintekniikka 2/2010

Schatz, T. & Martikainen, J., 2010+-

Publication

Laboratory Studies on the Effect of Freezing and Thawing Exposure... Read more

Laboratory Studies on the Effect of Freezing and Thawing Exposure on Bentonite Buffer Performance: Closed-System Tests.
Posiva Report 2010-6

Versatile bentonite clay+-

Article

Bentonite clay is used in various applications in range of... Read more

Bentonite clay is used in various applications in range of construction and environmental industry to food industry.

Read the full article (in Finnish), Geofoorumi 2/2010

Kumpulainen, S. & Kiviranta, 2010+-

Publication

Mineralogical and Chemical Characterization of Various Bentonite and Smectite-Rich Clay... Read more

Mineralogical and Chemical Characterization of Various Bentonite and Smectite-Rich Clay Materials.
Posiva Working Report 2010-52

B+Tech Oy studies the characteristics of bentonite-clay+-

Article

B+Tech is the only company in Finland specialized in the... Read more

B+Tech is the only company in Finland specialized in the research of bentonite-clay. Ytimekäs Magazine published an article about this.

Read the full article (in Finnish), Teollisuuden Voima Oyj:n yhtiölehti Ytimekäs 1/2010 (pdf)

Hansen, J., Korkiala-Tanttu, L., Keski-Kuha, E. & Keto, P., 2010+-

Publication

Deposition Tunnel Backfill Design for a KBS-3V Repository. Read more

Deposition Tunnel Backfill Design for a KBS-3V Repository. Posiva Working Report 2009-129

The recipe of a good name+-

Article

How to name a company? How was the name B+Tech... Read more

How to name a company? How was the name B+Tech Oy created?
Read the article (in Finnish)

The only one of its kind in Finland+-

Article

B+Tech Oy is specialized in the research and development of... Read more

B+Tech Oy is specialized in the research and development of bentonite clay materials to an extent that was not previously available in Finland. Bentonite clay research plays an essential role in the development of a nuclear waste repository.
Read more (in Finnish), Posiva Oy:n tiedotuslehti 1/2009

Keto, P., Dixon, D., Jonsson, E., Börgesson, L., Hansen, J. & Gunnarsson, D., 2010+-

Publication

Assessment of Backfill Design for KBS-3V Repository. Read more

Assessment of Backfill Design for KBS-3V Repository. Posiva and SKB initiated a joint programme BACLO (Backfilling and Closure of the Deep repository) in 2003 with the aim to develop methods and materials for backfilling of deposition tunnels. This report summarises the work done in the third and final phase of the BACLO programme.
Posiva Working Report 2009-115

Lehikoinen, J., 2010+-

Publication

Bentonite-Cement Interaction – Preliminary Results from Model Calculations.Posiva Working Report... Read more

Bentonite-Cement Interaction – Preliminary Results from Model Calculations.
Posiva Working Report 2009-37

Keto, P., Dixon, D., Jonsson, E., Gunnarsson, D., Börgesson, L. & Hansen, J., 2009+-

Article

Assessment of backfill design for KBS-3V repository. Read more

Assessment of backfill design for KBS-3V repository. Svensk Kärnbränslehantering AB, R-09-52

Pintado, X., Lloret, A., & Romero, E., 2009+-

Publication

Assessment of the use of the vapour equilibrium technique in... Read more

Assessment of the use of the vapour equilibrium technique in controlled-suction tests. Canadian Geotechnical Journal 46(4): 411–423.

Pintado, X., Lloret, A., & Romero, E., 2009+-

Publication

Reply to the discussion by Leong et al. Read more

Reply to the discussion by Leong et al. on “Assessment of the use of the vapour equilibrium technique in controlled-suction tests”. Canadian Geotechnical Journal 46(12): 1485–1486.

The nuclear waste repository research program is focused on bentonite+-

Article

In Helsinki, B+Tech Oy maintains the only laboratory in Finland... Read more

In Helsinki, B+Tech Oy maintains the only laboratory in Finland focused purely on bentonite clay.
Read the article (in Finnish), Länsi Suomi 11.2.2009

Dixon, D. A. & Keto, P., 2009+-

Publication

Backfilling Techniques and Materials in Underground Excavations: Potential Alternative Backfill... Read more

Backfilling Techniques and Materials in Underground Excavations: Potential Alternative Backfill Materials in Use in Posiva’s Spent Fuel Repository Concept.
Posiva Working Report 2008-56

Mellanen, S. (Ed.), Koskinen, L., Hellä, P., Löfman, J., Lanyon, B., Öhberg, A., Autio, J., Sacklén, N., Saukkonen, K., Saari, J., Lakio, A., Silvast, M., Wiljanen, B., Vuokko, J. & Lyytinen, T., 2009+-

Publication

EDZ Programme, EDZ Studies in ONKALO 2007-2008.The report introduces viewpoints... Read more

EDZ Programme, EDZ Studies in ONKALO 2007-2008.
The report introduces viewpoints of EDZ in terms of long term safety, modelling and calculation results to assess the significance of EDZ within ONKALO and documentation of various experiments to develop characterization methods of EDZ.
Posiva Working Report 2008-66

Anttila, P., Autio, J., Berghäll, J., Börgesson, L., Eriksson, M., Hagros, A., Halvarsson, B., Johansson, E., Kotola, R., Parkkinen, I., Rönnqvist, P-E. & Sandén, T., 2009+-

Publication

KBS-3H Design Description 2007. The presented KBS-3H design work was carried... Read more

KBS-3H Design Description 2007. The presented KBS-3H design work was carried out in KBS-3H project in 2004 - 2007, which was a joint project between Svensk Kärnbränslehantering AB (SKB) in Sweden and Posiva Oy in Finland.
Posiva Report 2008-1

Autio, J., Berghäll, J., Börgesson, L., Eriksson, M., Hagros, A., Johansson, E., Kotola, R., Parkkinen, I., Rönnqvist, P-E. & Sandén, T., 2007+-

Publication

KBS-3H Design Description 2006. Read more

KBS-3H Design Description 2006. This document provides the status of the design description of a KBS-3H repository design alternative as of early 2006.
Posiva Working Report 2007-105

Johansson, E., Hagros, A., Autio, J. & Kirkkomäki, T., 2008+-

Publication

KBS-3H Layout Adaptation 2007 for the Olkiluoto Site. Read more

KBS-3H Layout Adaptation 2007 for the Olkiluoto Site. Posiva Working Report 2007-77

Korkiala-Tanttu, L., Keto, P., Kuula-Väisänen, P., Vuorimies, N. & Adam, D., 2008+-

Publication

Packfill-Development of in situ Compaction. Read more

Packfill-Development of in situ Compaction. Test Report for Field Tests November 2005.
Posiva Working Report 2007-75