TY - JOUR A1 - Hellmuth, K.-H. A1 - Klobes, Peter A1 - Meyer, Klaus A1 - Röhl-Kuhn, Barbara A1 - Siitari-Kauppi, M. A1 - Hartikainen, K. A1 - Hartikainen, J. A1 - Timonen, J. T1 - Matrix retardation studies: size and structure of the accessable pore space in fresh and altered crystalline rock N2 - For the assessment of the barrier function of the geosphere around a nuclear waste repository information about the nature of the accessible rock pore space and internal surfaces is needed. Intact samples of various types of fresh and altered crystalline rocks have been studied by means of mercury intrusion porosimetry and gas adsorption methods using various adsorbates. Furthermore, fluorescence microscopy and scanning electron microscopy was applied and the results were compared with those of impregnation with carbon-l4-polymethylmethacrylate (PMMA). Additional structural information was derived from hydraulic conductivity determinations using helium gas. The investigations were focussed on the reliability of these measurements of intact core samples, the influence of rock composition, structure and geological evolution on the microstructure of the matrices and the consequences regarding the retardation properties of the bedrock. PY - 1995 SN - 0303-4534 VL - 23 IS - 5/6 SP - 691 EP - 706 PB - Verl. für Geowissenschaften Wutzke CY - Berlin AN - OPUS4-11979 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hellmuth, K.-H. A1 - Siitari-Kauppi, M. A1 - Klobes, Peter A1 - Meyer, Klaus A1 - Goebbels, Jürgen T1 - Imaging and Analyzing Rock Porosity by Autoradiography and Hg-porosimetry/X-ray Computertomography-Applications N2 - The application of two sets of methods for the characterization of rock pore systems is reported. Both are discussed in the context of other techniques described in the literature. (i) Impregnation with labelled polymethylmethacrylate (PMMA) and autoradiography or direct measurement of the tracer activity allows the investigation of the pattern of the spatial porosity distribution and quantitative measurement of mineral-specific, local porosities, porosity gradients as well as an assessment of hydraulic and diffusive transport properties. (ii) Quantitative information on surface areas within certain pore size ranges can be achieved by combination of mercury intrusion porosimetry with X-ray absorption computertomography. As examples of applications of these techniques, the effects of weathering, alteration, mechanical stress and large diameter coring on the pore network of rocks have been studied. PY - 1999 SN - 1464-1895 VL - 24 IS - 7 SP - 569 EP - 573 PB - Pergamon CY - Oxford AN - OPUS4-11980 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Viehrig, H.-W. A1 - Baer, Wolfram A1 - Gerwien, Peter A1 - Grundmann, N. A1 - Houska, M. A1 - Lucon, E. A1 - Mottitschka, T. A1 - Trubitz, P. T1 - Bestimmung der J-Risswiderstandskurve an einem zähen Reaktordruckbehälterstahl - Ergebnisse eines Round Robin Tests T2 - 45. Tagung des DVM-Arbeitskreises Bruchvorgänge CY - Berlin, Germany DA - 2013-02-19 KW - Duktiles Risswachstum KW - J-Integral KW - Teilentlastungsverfahren KW - Bruchzähigkeit KW - Ductile tearing KW - J integral KW - Unloading compliance KW - Fracture toughness KW - Bruchmechanik KW - Round Robin KW - Risswiderstandskurve PY - 2013 N1 - Serientitel: DVM-Bericht – Series title: DVM-Bericht VL - 245 SP - 91 EP - 100 AN - OPUS4-27912 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Siitari-Kauppi, M. A1 - Marcos, N. A1 - Klobes, Peter A1 - Goebbels, Jürgen A1 - Timonen, J. A1 - Hellmuth, K.-H. T1 - The Palmottu natural analogue project - physical rock matrix characterisation KW - C14-PMMA-Imprägnations-Radiographie KW - Hg-Porosimetrie KW - Computertomographie KW - Optische Mikroskopie KW - He-Diffusion KW - MMA-Diffusion KW - Wassersättigung PY - 2003 SN - 0783-3555 SP - 1 EP - 63 PB - Espoo AN - OPUS4-5194 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Neumann, G. A1 - Pfundstein, M. A1 - Reimers, Peter T1 - Influence of Limited Solubility on Impurity Diffusion Profiles PY - 1977 SN - 0942-9352 SN - 2196-7156 SN - 0044-3336 SN - 0044-3328 SN - 0942-9352 VL - 106 SP - 131 EP - 138 PB - Oldenbourg CY - München AN - OPUS4-9004 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Neumann, G. A1 - Pfundstein, M. A1 - Reimers, Peter T1 - Influence of Limited Solubility on Impurity Diffusion Profiles PY - 1977 SN - 0942-9352 SN - 2196-7156 SN - 0044-3336 SN - 0044-3328 SN - 0942-9352 VL - 106 SP - 131 EP - 138 PB - Oldenbourg CY - München AN - OPUS4-8785 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bäumer, A. A1 - Bork, Claus-Peter A1 - Emde, T. A1 - Evertz, T. A1 - Masendorf, R. A1 - May, U. A1 - Menne, M. A1 - Ratte, E. A1 - Steinbeck, G. T1 - Forschungsvorhaben P 603 - Ermittlung des Werkstoffverhaltens und des Beschichtungseinflusses durch rechnerische Methoden zur Verkürzung der Entwicklungszeiten im Fahrzeugbau mit Stahl KW - Stahlblech KW - Automobilindustrie KW - Crashverhalten KW - Fließkurven KW - Dehnungswöhlerlinien KW - Lebensdauerabschätzung PY - 2007 SN - 3-937567-48-8 SP - 122 Seiten PB - Verlag und Vertriebsgesellschaft mbH CY - Düsseldorf AN - OPUS4-15748 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maultzsch, Matthias A1 - Gierloff, M. A1 - Schimmelwitz, Peter T1 - Aging of cement through long term storage T2 - 7th International Congress on the Chemistry of Cement ; 7ère Congrès International de la Chimie des Ciments CY - Paris, France DA - 1980-01-01 PY - 1980 VL - 2 SP - I-128-I-133 PB - Ed. Septima CY - Paris AN - OPUS4-6917 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Reiche, I. A1 - Castaing, J. A1 - Calligaro, T. A1 - Salomon, J. A1 - Aucouturier, M. A1 - Reinholz, Uwe A1 - Weise, Hans-Peter T1 - Analyses of hydrogen in quartz and in sapphire using depth profiling by ERDA at atmospheric pressure: Comparison with resonant NRA and SIMS N2 - Hydrogen is present in anhydrous materials as a result of their synthesis and of their environment during conservation. IBA provides techniques to measure H concentration depth profiles allowing to identify various aspects of the materials including the history of objects such as gemstones used in cultural heritage. A newly established ERDA set-up, using an external microbeam of alpha particles, has been developed to study hydrated near-surface layers in quartz and sapphire by non-destructive H depth profiling in different atmospheres. The samples were also analysed using resonant NRA and SIMS. KW - Hydrogen KW - Gemstones KW - ERDA KW - External beam KW - Depth profiling PY - 2006 DO - https://doi.org/10.1016/j.nimb.2006.03.066 SN - 0168-583X SN - 1872-9584 VL - 249 IS - 1-2 SP - 608 EP - 611 PB - Elsevier CY - Amsterdam AN - OPUS4-12844 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Krüger, Ralph-Peter A1 - Heinemann, M. A1 - Falkenhagen, Jana A1 - Hartmann, A. A1 - Friedrich, Jörg Florian A1 - Fritz, H.-G. ED - Fritz, H. ED - Eisenbach, C. T1 - Charakterisierung biologisch abbaubarer Homo- und Copolyester / Characterisation of biodegradable Homo- and Copolyesters T2 - 19. Stuttgarter Kunststoff-Kolloquium 2005 CY - Stuttgart, Deutschland DA - 2005-03-09 KW - MALDI-TOF-MS KW - Bioabbaubare Polyester KW - Flüssigchromatographie KW - Methodenkopplung KW - Biodegradable polyesters KW - Liquid chromatography KW - Coupling of analytical methods PY - 2005 SN - 3-00-015246-6 SP - 5/P1-1 - 5/P1-9 PB - IKT CY - Stuttgart AN - OPUS4-11767 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -