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  • 201. Pascal, Suer
    et al.
    Lindqvist, Jan Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Reproducing ten years of road ageing: accelerated carbonation and leaching of EAF steel slag2009In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 407, no 18, p. 5110-5118Article in journal (Other academic)
  • 202. Paulsson-Tralla, Jonatan
    et al.
    Kalinowski, Mariusz
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Alkalisilikaproblem för betong i Sverige: ett växande problem som inte bör negligeras2013In: Bygg och Teknik, ISSN 0281-658X, E-ISSN 2002-8350, no 7, p. 49-52Article in journal (Other academic)
  • 203.
    Persson, Kent
    et al.
    Lund University, Sweden.
    Haller, Kristian
    Acoustic Agree AB, SWeden.
    Karlsson, Stefan
    RISE Research Institutes of Sweden, Built Environment, Building and Real Estate.
    Kozlowski, Marcin
    Silesian University of Technology, Poland.
    Non-destructive testing of the strength of glass by a non-linear ultrasonic method2020In: Challenging Glass Conference Proceedings / [ed] Jan Belis, Freek Bos and Christian Louter, 2020, Vol. 7Conference paper (Refereed)
    Abstract [en]

    The paper presents basis and experimental results of a non-destructive method aimed at determination of the presence of large surface cracks in glass samples by measurements with NAW® technology (Nonlinear Acoustic Wave). The method is based on a transmitted ultrasonic wave in the material from which the non-linear content of the signal can be analysed. A sample containing defects presents nonlinearities in the form of distortions, such as, higher order harmonics that are detected. Nonlinearities in the signal are primarily formed at crack-tips and the number of nonlinearities is proportional to the amount of damage, or defects, in the sample that is investigated. The result of the measurement and evaluation, that only takes a few seconds, is a damage value that is easy to understand and to use for immediate application. A number of preliminary test results and comparisons with destructive testing for various test setups, as well as a recent test strategy including fabricated defects with a nanoindenter will be discussed.

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  • 204.
    Peterson, Anna
    et al.
    RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites.
    Wallinder, Johan
    RISE Research Institutes of Sweden, Bioeconomy and Health, Pulp, Paper and Packaging.
    Bengtsson, Jenny
    RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites.
    Idström, A.
    Chalmers University of Technology, Sweden.
    Bialik, Marta
    RISE Research Institutes of Sweden, Bioeconomy and Health, Pulp, Paper and Packaging.
    Jedvert, Kerstin
    RISE Research Institutes of Sweden, Bioeconomy and Health, Pulp, Paper and Packaging.
    de la Motte, Hanna
    RISE Research Institutes of Sweden, Bioeconomy and Health, Pulp, Paper and Packaging.
    Chemical Recycling of a Textile Blend from Polyester and Viscose, Part I: Process Description, Characterization, and Utilization of the Recycled Cellulose2022In: Sustainability, E-ISSN 2071-1050, Vol. 14, no 12, article id 7272Article in journal (Refereed)
    Abstract [en]

    Material recycling requires solutions that are technically, as well as economically and ecologically, viable. In this work, the technical feasibility to separate textile blends of viscose and polyester using alkaline hydrolysis is demonstrated. Polyester is depolymerized into the monomer terephthalic acid at high yields, while viscose is recovered in a polymeric form. After the alkaline treatment, the intrinsic viscosity of cellulose is decreased by up to 35%, which means it may not be suitable for conventional fiber-to-fiber recycling; however, it might be attractive in other technologies, such as emerging fiber processes, or as raw material for sugar platforms. Further, we present an upscaled industrial process layout, which is used to pinpoint the areas of the proposed process that require further optimization. The NaOH economy is identified as the key to an economically viable process, and several recommendations are given to decrease the consumption of NaOH. To further enhance the ecological end economic feasibility of the process, an increased hydrolysis rate and integration with a pulp mill are suggested. © 2022 by the authors.

  • 205.
    Pimienta, Pierre
    et al.
    CSTB, France.
    McNamee, Robert
    RISE Research Institutes of Sweden, Safety and Transport, Fire and Safety. Lund university, Sweden.
    Robert, Fabienne
    CERIB, France.
    Boström, Lars
    RISE Research Institutes of Sweden.
    Huang, Shan-Shan
    University of Sheffield, United Kingdom.
    Mróz, Katarzyna
    Cracow university of technology, Poland.
    Davie, Colin
    Newcastle university, United Kingdom.
    Mohaine, Siyimane
    CERIB, France.
    Alonso, Maria Cruz
    Eduardo Torroja Institute for Construction Sciences (IETcc), Spain.
    Bodnarova, Lenka
    Brno university of technology, Czech Republic.
    Bosnjak, Josipa
    Universität Stuttgart (MPA), Germany.
    Dal Pont, Stefano
    Université Grenoble Alpes, France.
    Dao, Vinh
    University of Queensland, Australia.
    Dauti, Dorjan
    EFECTIS FRANCE, France.
    Dehn, Frank
    Karlsruher Institut für Technologie, Germany.
    Felicetti, Roberto
    Politecnico di Milano, Italy.
    Hager, Izabela
    Cracow university of technology, Poland.
    Hela, Rudolf
    Brno university of technology, Czech Republic.
    Hozjan, Tomaz
    University of Ljubljana, Slovenia.
    Juknat, Michael
    MFPA Leipzig, Germany.
    Jumppanen, Ulla-Maija
    VTT, Finland.
    Kirnbauer, Johannes
    Vienna university of technology, Austria.
    Kolsek, Jerneja
    University of Ljubljana, Slovenia.
    Korzen, Manfred
    BAM, Bundesanstalt für Materialforschung und -Prüfung, Germany.
    Lakhani, Hitesh
    Institut für Werkstoffe Im Bauwesen, Germany.
    Lion, Maxime
    EDF - TEGG/CEMETE, France.
    Lo Monte, Francesco
    Politecnico di Milano, Italy.
    Maluk, Cristian
    Semper, United Kingdom.
    Meftah, Fekri
    INSA Rennes, France.
    Miah, Md Jihad
    CSTB, France.
    Millard, Alain
    CEA, France.
    Mindeguia, Jean-Christophe
    University of Bordeaux, France.
    Moreau, Bérénice
    CETU, France.
    Msaad, Yahia
    CSTB, France.
    Ozawa, Mitsuo
    Gumma university, Japan.
    Pesavento, Francesco
    Universeta degli Studi Di Padova, Italy.
    Pham, Duc Toan
    CSTB, France.
    Pistol, Klaus
    Fachhochschule Potsdam, Germany.
    Rickard, Ieuan
    University of Edinburgh, United Kingdom.
    Rodrigues, Joao Paulo Correia
    University of Coimbra, Portugal.
    Roosefid, Mohsen
    IRSN, France.
    Schneider, Martin
    Carinthia university of applied sciences, Austria.
    Sharma, Umesh Kumar
    Indian institute of technology, India.
    Sideris, Kosmas
    Democritus university of Thrace, Greece.
    Stelzner, Ludwig
    BAM, Bundesanstalt für Materialforschung und -Prüfung, Germany.
    Weber, Benedikt
    EMPA, Switzerland.
    Weise, Frank
    BAM, Bundesanstalt für Materialforschung und -Prüfung, Germany.
    Recommendation of RILEM TC 256-SPF on fire spalling assessment during standardised fire resistance tests: complementary guidance and requirements2024In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 57, no 1, article id 3Article in journal (Refereed)
    Abstract [en]

    The recommendation is based on the co-authors’ work organized by the RILEM TC 256-SPF “Spalling of concrete due to fire: testing and modelling”. It aims to provide useful information, guidance and best practices in fire spalling assessment to laboratories that perform large-scale tests based on fire resistance test standards. It provides guidance on the spalling observation techniques during testing, as well as post-test spalling quantification/assessment methods. This document is intended to be used in conjunction with the fire resistance test standards, e.g. EN 1363-1 and ISO 834-1. © 2023, The Author(s), under exclusive licence to RILEM.

  • 206.
    Plusquellec, Gilles
    et al.
    RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.
    Babaahmadi, Arezou
    RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.
    L’Hopital, Emilie
    RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.
    Mueller, Urs
    RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.
    Activated clays as supplementary cementitious material2021Report (Other academic)
    Abstract [en]

    Concrete is the most used material in the world (buildings, infrastructure, transport) and its production is continuously increasing over the years because of the growth of the population, the urbanisation, and the infrastructure development. Unfortunately, the production of the main component of concrete, cement, causes inevitable CO2 emissions, accounting for 6% of the total anthropogenic CO2 emissions. The most efficient way to reduce this environmental footprint is to reduce the clinker factor in cement or to reduce the cement content in concrete, which is done by replacing a part of the cement by Supplementary Cementitious Materials (SCM). However, the most commonly used SCM (fly ash and ground granulated blast furnace slag) are only available in a low amount in Sweden. New SCM must be find.The objective of this project was to evaluate the potential of using Swedish clays as SCM. An inventory of available clays was performed in a first step. Then, as clays need to be activated before use with cement, different activation procedures were tested. A selection of clays was mixed with cement either in binary mixes (cement + activated clay) or in ternary mixes (cement + activated clay + limestone). The hydration properties and the microstructure of binder pastes were investigated, as well as the strength development of mortars. Finally, a life cycle analysis (LCA) was performed to evaluate the positive impact on the CO2 emissions when clays are used as SCM.The results of the project highlighted the good potential of using Swedish clays in concrete to decrease the environmental footprint due to the cement and concrete industries. In particular, the clays can be activated through mechanical and thermal treatment, depending on the type of clay. Thermal treatment in temperature ranges between 600-800 degrees is preferred for sedimentary clays, while a mechanical treatment by ball milling gives better results with marine clays. A satisfactory strength is achieved in mortar samples cast with calcined clays. This was achieved by replacing the cement with 30% of calcined clay and 15% of limestone. Finally, the LCA calculation shows that the use of clay in a ternary binder lead to a reduction of approx. 34% of the CO2 emissions.

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  • 207. Powell, Tor
    Viktiga förutsättningar och krav för härdplastbeläggningar i parkeringshus2010In: Bygg och Teknik, ISSN 0281-658X, E-ISSN 2002-8350, Vol. 102, no 8, p. 66-68Article in journal (Other academic)
  • 208.
    Rasel, Hannah
    et al.
    RISE, Innventia.
    Hedenqvist, Mikael S
    KTH Royal Institute of Technology, Sweden.
    Johansson, Therese
    RISE, Innventia.
    Newson, William R
    SLU Swedish University of Agricultural Sciences, Sweden.
    Johansson, Eva
    SLU Swedish University of Agricultural Sciences, Sweden.
    Gällstedt, Mikael
    RISE, Innventia.
    New bio-based plastics from a non-edible plant oil side-stream for film extrusion2014Conference paper (Refereed)
    Abstract [en]

    Renewable sourced PET, PA, PE, starch blends, etc, are fastly growing due to the processability and final performance, that is similar to their petroleum derived options. A bit in the shadow of the development of these plastics, development is ongoing on another group of plastics, made directly of the side-streams of agricultural products: oil plant residues and proteins. They can be used in edible applications but not all of them are suitable for food or forage. Industrial oilseed meal from crambe abyssinica contains relatively high levels of protein that is not suitable for human or animal consumption due to the presence of anti-nutritional compounds. This paper presents research on crambe meal as a base for new plastics, developed to extrude continuous, flexible plastic films based on crambe meal, blended with vital wheat gluten as an elastic component and urea as a protein denaturant. The effect of process parameters, such as screw speed, die temperature and pressure, and the effect of components were studied with regards to the final performance of the film extrudates. E.g. mechanical properties, oxygen permeability and moisture content were determined and surface and cross-section morphologies were examined with electron microscopy. The results showed that crambe-based blends can be extruded as continuous, flexible plastic films, which exhibit barrier properties towards oxygen. Recipes and methods for pelletizing of master batches for post-converting (e.g. extrusion or compression molding) were successfully developed. Addition of arenewable plasticizer improved the extrusion performance and resulted in less hygroscopic films, which further showed the overall highest tensile strength while the extensibility was nearly unaffected. The results provide a first basis to further develop the process and the blend towards potential industrial applications, for example as packaging materials to trays, pots and similar type of packages.

  • 209.
    Rasheed, Faiza
    et al.
    SLU Swedish University of Agricultural Sciences, Sweden.
    Hedenqvist, Mikael S.
    KTH Royal Institute of Technology, Sweden.
    Kuktaite, Ramune
    SLU Swedish University of Agricultural Sciences, Sweden.
    Plivelic, Tomás S.
    Lund University, Sweden.
    Gällstedt, Mikael
    RISE, Innventia.
    Johansson, Eva
    SLU Swedish University of Agricultural Sciences, Sweden; CSIRO Commonwealth Scientific and Industrial Research Organisation, Australia.
    Mild gluten separation - A non-destructive approach to fine tune structure and mechanical behavior of wheat gluten films2015In: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 73, p. 90-98Article in journal (Refereed)
    Abstract [en]

    Despite the increasing production of wheat gluten (WG) for industrial use, minor attention has been given to the impact of the separation procedure on the gluten quality. The purpose of the present study was to probe the effect of the separation treatments (harsh vs mild) on gluten structure, morphology, and performance in bio-based films. The harshly separated industrial WG showed aggregated and pre-cross linked structure in the starting material most likely due to shear forces during gluten separation from flour and heat effect during the drying procedures. Further, when the harshly separated WG was processed into films the pre-crosslinked starting material restricted new crosslinks formation and structural rearrangements at nano-scale. The mechanical integrity of the film was also affected resulting in films with low Young's modulus and strength. WG (from cultivars Diskette, Puntari, and Sleipner) recovered from mild separation showed relatively "native" non-destructed crosslinking pattern and not previously observed structural morphology at nano-scale. When processed into films the mildly separated WG showed well polymerized intimately crosslinked proteins both with disulfide and other covalent crosslinks. The nano-scale morphology showed lamellar and hexagonal arrangements, not reported so far in any study. The structural rearrangements among films from mildly separated WG resulted in materials with improved mechanical integrity as compared to films from harshly separated WG. The present study showed that the quality of WG is significantly affected by the separation procedure which also affects protein polymerization, nano-scale morphology, and tensile properties of films.

  • 210.
    Raulf, Martin
    et al.
    ThyssenKrupp Steel Europe AG, Forschung und Entwicklung.
    Persson, Karin
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Rolling of Steel2014In: Encyclopedia of Lubricants and Lubrication, Springer Berlin/Heidelberg, 2014, p. 1663-1680Chapter in book (Other academic)
    Abstract [en]

    Steel is one of the most widely used construction material. It is extensively applied in building, for automotive and household applications, in packaging, and many other fields. The world steel production reached some 1.55 billion tons in 2012. About half of the that amount is produced as flat steel, which is by definition (DIN EN 10079) a product that is rectangular shaped, where the width is much bigger than its thickness and – it can be added – is formed in a rolling processes. According to DIN 8583, rolling is a forming process under pressure, where the workpiece is formed between two or more rotating tools.

  • 211. Rodionova, G.
    et al.
    Roudot, S.
    Eriksen, Ø.
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Männle, F.
    Gregersen, Ø.
    The formation and characterisation of sustainable layered films incorporating microfibrillated cellulose (MFC)2012In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 7, p. 3690-3700Article in journal (Refereed)
  • 212.
    Rodionova, Galina
    et al.
    RISE, Innventia, PFI – Paper and Fiber Research Institute. NTNU Norwegian University of Science and Technology, Norway.
    Eriksen, Øyvind
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Gregersen, Øyvind Weiby
    RISE, Innventia, PFI – Paper and Fiber Research Institute. NTNU Norwegian University of Science and Technology, Norway.
    TEMPO-oxidized cellulose nanofiber films:: effect of surface morphology on water resistance2012In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 19, no 4, p. 1115-1123Article in journal (Refereed)
    Abstract [en]

    2,2,6,6-Tetramethylpiperidine-1-oxyl radical (TEMPO)-oxidized cellulose nanofibers were prepared from two kraft pulps (Norway spruce and mixed eucalyptus) using the TEMPO/NaBr/NaClO system at pH 10 and 22 °C. After reaction and mechanical treatment, the TEMPO-oxidized celluloses were used for preparation of self-standing films and coatings of laminate films on 50-μm-thick polyethylene terephthalate films. Characterization of the films was performed based on water contact angle measurements, laser profilometry, scanning electron microscopy, and field-emission scanning electron microscopy. The purpose of this study is to understand how the measured contact angles are affected by the film's physical properties (morphology, thickness, density, and roughness).

  • 213.
    Rodionova, Galina
    et al.
    NTNU Norwegian University of Science and Technology, Norway.
    Hoff, Bård H.
    NTNU Norwegian University of Science and Technology, Norway.
    Lenes, Marianne
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Eriksen, Øyvind
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Gregersen, Øyvind Weiby
    NTNU Norwegian University of Science and Technology, Norway.
    Gas-phase esterification of microfibrillated cellulose (MFC) films2013In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 20, no 3, p. 1167-1174Article in journal (Refereed)
    Abstract [en]

    The barrier properties of microfibrillated cellulose (MFC) films were improved by heterogeneous gas-phase esterification using various combinations of trifluoroacetic acid anhydride, acetic acid and acetic anhydride. The temperature, reagent ratio and reaction time were varied in the experimental design. The effects of two different purification procedures on the barrier properties of esterified MFC films were investigated. Washing with water did not affect the barrier properties compared to those of the films that were not washed, while the use of diethyl ether led to improved barrier properties as measured by the contact angle (CA) of water. The chemical composition of the modified films was studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Alterations in hydrophobicity and oxygen permeability were evaluated using dynamic CA and oxygen transmission rate measurements, respectively.

  • 214.
    Rodionova, Galina
    et al.
    NTNU Norwegian University of Science and Technology, Norway.
    Saito, Tsuguyuki
    University of Tokyo, Japan.
    Lenes, Marianne
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Eriksen, Øyvind
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Gregersen, Øyvind Weiby
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Fukuzumi, Hayaka
    University of Tokyo, Japan.
    Isogai, Akiara
    University of Tokyo, Japan.
    Mechanical and oxygen barrier properties of films prepared from fibrillated dispersions of TEMPO-oxidized Norway spruce and Eucalyptus pulps2012In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 19Article in journal (Refereed)
    Abstract [en]

    TEMPO-oxidized cellulose nanofibers (TOCN) were obtained from commercial Norway spruce and mixed Eucalyptus cellulose pulps using TEMPO/sodium bromide (NaBr)/sodium hypochlorite (NaClO) system at pH 10 and 22 °C. After reaction, the fibrillated TEMPO-oxidized celluloses were used for preparation of self-standing films and casting of laminate films on 50 μm thick polyethylene terephthalate. Significant differences between N. spruce and Eucalyptus TOCN were registered. The tensile strength of the films showed a maximum value for spruce samples oxidized with addition of 10 mmol g -1 of NaClO. Oxygen permeability decreased with increasing oxidation levels, being lower for N. spruce TOCN compared to Eucalyptus.

  • 215.
    Roos, Sandra
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, IVF. Chalmers University of Technology, Sweden.
    Peters, Gregory M.
    Chalmers University of Technology, Sweden.
    Validation of the results from toxicity assessment in LCA using triangulation2015In: SETAC Europe 25th Annual Meeting Abstract Book, 2015, p. 28-, article id 121Conference paper (Refereed)
    Abstract [en]

    The European Commission initiative for Product Environmental Footprint is based on life cycle assessment (LCA), with the USEtox consensus model as the recommended impact assessment method for toxicity. The confidence in the scientific robustness will be crucial for the intended users to take actions based on the results. This research work aims to validate the results from toxicity assessment within the context of LCA by benchmarking USEtox with two alternative approaches in a case study. While strictly speaking there can be no experimental validation of environmental damage predicted in an LCA of a generic product, comparison of the results of three different methods can be considered a form of triangulation in LCA which can potentially provide confidence in an individual method. A textile case was chosen as the textile industry is an intense user of chemicals.Three different quantitative or semi-quantitative methods for toxicity assessment were used: the USEtox model chosen for the European PEF work; the Score System presented in the European Commission's Reference Document on Best Available Techniques for the Textiles Industry; and the Strategy Tool presented by Askham. The results show that the three methods do not give a consistent toxicity assessment of the chemicals in the case study. For USEtox the result also depends on whether the practitioner uses the default method or add more characterization factors. The two semi-quantitative methods give more equal importance to the chemicals while the USEtox scores differ by several orders of magnitude. The Simple Score System and the Strategy Tool are very concerned with persistent pollutants and therefore the chemicals which are not readily biodegradable, receive a high score. The USEtox score on the other hand is relatively low for the persistent organic chemicals. Validation of results using triangulation can be used both to create confidence and/or help identify new challenges that were not previously perceived in the method. In this case we showed that the property of persistence is judged to have lower importance in USEtox compared to the two other methods, which is a finding that can be used to develop the fate modelling in USEtox. On the other hand, USEtox could provide additional advice compared to the two other methods, that one of the substances could be more environmentally problematic than what these semi-quantitative methods signals.

  • 216.
    Saadatmand, Soheil
    et al.
    KTH Royal Institute of Technology, Sweden.
    Edlund, Ulrica
    KTH Royal Institute of Technology, Sweden.
    Albertsson, Ann Christine
    KTH Royal Institute of Technology, Sweden.
    Danielsson, Sverker
    RISE, Innventia.
    Dahlman, Olof B.
    RISE, Innventia.
    Karlström, Katarina
    RISE, Innventia.
    Turning hardwood dissolving pulp polysaccharide residual material into barrier packaging2013In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 14, no 8, p. 2929-2936Article in journal (Refereed)
    Abstract [en]

    Birch chips were subjected to pilot-scale pre-hydrolysis under various sets of conditions to mimic a pre-hydrolysis step in a dissolving pulp process. The process generates residual process liquor, a wood hydrolysate, and the treated chips may be directly utilized in a dissolving process. The wood hydrolysates were rich in xylan and utilized in the production of fully renewable films that provide very good oxygen barrier function and mechanical integrity also at high relative humidity. Membrane filtration had an effect in enriching higher molecular weight fractions from the hydrolysates, but noteworthy, a hydrolysate used in the crude state without any membrane filtration performed just as well as upgraded fractions in forming films providing acceptable tensile properties and a good barrier against oxygen permeation.

  • 217.
    Schienle, Stefanie
    et al.
    Albert Ludwigs University, Germany.
    Al-Ahmad, Ali
    Albert Ludwigs University, Germany.
    Kohal, Ralf Joachim
    University of Freiburg, Germany.
    Bernsmann, Falk
    NTTF Coatings GmbH, Germany.
    Adolfsson, Erik
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Montanaro, Laura
    Polytechnic University of Turin, Italy.
    Palmero, Paola
    Polytechnic University of Turin, Italy.
    Fürderer, Tobias
    DOCERAM Medical Ceramics GmbH, Germany.
    Chevalier, Jérôme
    University of Lyon, France.
    Hellwig, Elmar
    Albert Ludwigs University, Germany.
    Karygianni, Lamprini
    Albert Ludwigs University, Germany.
    Microbial adhesion on novel yttria-stabilized tetragonal zirconia (Y-TZP) implant surfaces with nitrogen-doped hydrogenated amorphous carbon (a-C:H:N) coatings2016In: Clinical Oral Investigations, ISSN 1432-6981, E-ISSN 1436-3771, Vol. 20, no 7, p. 1719-1732Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES:

    Biomaterial surfaces are at high risk for initial microbial colonization, persistence, and concomitant infection. The rationale of this study was to assess the initial adhesion on novel implant surfaces of Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Candida albicans upon incubation.

    MATERIALS AND METHODS:

    The tested samples were 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) samples with nitrogen-doped hydrogenated amorphous carbon (a-C:H:N) coating (A) and 3Y-TZP samples coated with ceria-stabilized zirconia-based (Ce-TZP) composite and a-C:H:N (B). Uncoated 3Y-TZP samples (C) and bovine enamel slabs (BES) served as controls. Once the surface was characterized, the adherent microorganisms were quantified by estimating the colony-forming units (CFUs). Microbial vitality was assessed by live/dead staining, and microbial-biomaterial surface topography was visualized by scanning electron microscopy (SEM).

    RESULTS:

    Overall, A and B presented the lowest CFU values for all microorganisms, while C sheltered significantly less E. faecalis, P. aeruginosa, and C. albicans than BES. Compared to the controls, B demonstrated the lowest vitality values for E. coli (54.12 %) and C. albicans (67.99 %). Interestingly, A (29.24 %) exhibited higher eradication rates for S. aureus than B (13.95 %).

    CONCLUSIONS:

    Within the limitations of this study, a-C:H:N-coated 3Y-TZP surfaces tended to harbor less initially adherent microorganisms and selectively interfered with their vitality.

    CLINICAL RELEVANCE:

    This could enable further investigation of the new multi-functional zirconia surfaces to confirm their favorable antimicrobial properties in vivo.

  • 218. Schlegel, M C
    et al.
    Mueller, Urs
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Spatially resolved investigation of complex multi-phase systems using μxRF, SEM-EDX and high resolution SyXRD2013In: Cement & Concrete Composites, ISSN 0958-9465, E-ISSN 1873-393X, Vol. 37, no 1, p. 241-245Article in journal (Refereed)
    Abstract [en]

    Spatially resolved analysis of complex multi-phase systems can be validated through different analytical methods. This study compares investigations by scanning electron microscopy coupled with energy dispersive X-ray fluorescence analysis and high resolution X-ray diffraction. The studied sulfate attacked cement paste containing fly ashes consists of different interacting crystalline and amorphous phases. The complementary methods revealed in detail changes in phase composition due to the chemical attack. The advantages and disadvantages of both methods are discussed and suggestions are given for combining them with additional methods to maximize the information content.

  • 219.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    100-miljonersprojektet I-STONE om natursten nu färdigt.2009In: CBI nytt, ISSN 0349-2060, no 2, p. 2-3Article in journal (Other academic)
  • 220.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Bergmaterialcentrum: nu Innovationscentrum för berg och stenteknik2011In: CBI-nytt, ISSN 0349-2060, no 2, p. 11-Article in journal (Other academic)
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  • 221.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Brunfärgade graniter.: Mysteriets lösning?2009In: Sten, ISSN 0346-1866, no 4Article in journal (Other academic)
  • 222.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    En ny möjlighet för nordisk skiffer att CE-märkas2010In: STEN, ISSN 0346-1866, Vol. 72, no 2, p. 43-Article in journal (Other academic)
  • 223.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Expertsystem tar fram tålig marmorplatta för utevägg2011In: Husbyggaren, ISSN 0018-7968, Vol. 53, no 4, p. 18-20Article in journal (Other academic)
  • 224.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Grå-gröna systemlösningar för hållbara städer2013In: CBI-nytt, ISSN 0349-2060, no 2, p. 8-9Article in journal (Other academic)
  • 225.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Hydraulisk spräckning av berg: nytt EU-projekt med svensk dominans2012In: Svensk Bergs- & Brukstidning, ISSN 0039-6435, no 5-6Article in journal (Other academic)
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  • 226.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Obligatorisk CE-märkning av natursten2012In: STEN, ISSN 0346-1866, Vol. 74, no 1, p. 74-Article in journal (Other academic)
  • 227.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Om stenfasader i Expertguiden specialavsnitt om renovering av fasader2012In: Fastighetsförvaltaren, no 3Article in journal (Other academic)
  • 228.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Stenens tekniska egenskapers betydelse för funktionen2009In: Sten, ISSN 0346-1866, no 2Article in journal (Other academic)
  • 229.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Vilka naturstenar klarar svensk kyla och töslask?2009In: Husbyggaren, ISSN 0018-7968, Vol. 51, no 7, p. 44-46Article in journal (Other academic)
    Abstract [sv]

    Natursten är ett av de äldsta byggnadsmaterial vi har. Nu ökar importen av billig utomeuropeisk natursten, med egenskaper vi inte alltid känner till. Stenen kan ha svårt att klara svensk vinter. Det blir allt knivigare att välja. Granit är inte längre synonymt med beständig sten.

  • 230.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Översvämning och träddöd i spåren av stadens förtätning2014In: Cementa, ISSN 0346-8771, no 2, p. 9-11Article in journal (Other academic)
  • 231.
    Schouenborg, Björn
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Nilsson, Agne
    Alla innovationer med natursten är inte av godo!2010In: Sten, ISSN 0346-1866, Vol. 72, no 4, p. 40-Article in journal (Other academic)
  • 232.
    Sederholm, Bror
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, KIMAB, Corrosion protection of building structures.
    Trägårdh, Jan
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Ahlström, Johan
    RISE - Research Institutes of Sweden, Materials and Production, KIMAB, Corrosion protection of building structures.
    Boubitsas, Dimitrios
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Luping, Tang
    Chalmers University of Technology, Sweden.
    Ny provningsmetodik för bestämning av bindemedlets korrosionsskyddande förmåga i betong2018Report (Other academic)
    Abstract [sv]

    Denna rapport omfattar slutrapporteringen av forskningsprojektet - Ny provningsmetodik för bedömning av bindemedlets korrosionsskyddande förmåga i betong – Underlag till LCA och livslängdsbedömning. I rapporten redovisas resultat från elektrokemiska undersökningar utförda på laboratorium och korrosionsprovningar i fält. Undersökningarna har genomförts av Swerea KIMAB, RISE CBI Betonginstitutet (väst och öst) samt Chalmers. Projektets mål har varit att genom en nationell samling av expertis ta fram en ny provningsmetodik som på ett enkelt och tillämpbart sätt ska utvärdera olika bindemedels korrosionsskyddande förmåga i betong. I denna undersökning har framför allt tiden till initiering av korrosion (gropfrätning) från det att kloriderna har nått stålytan och tills gropfrätning har initieras på stålytan undersökts. Tre olika accelererade elektrokemiska mätmetoder har använts och jämförts:

     Potentiostatisk mätmetod

     Potentiodynamisk mätmetod

     Galvanostatisk mätmetod

    Den framtagna provningsmetodiken med framställning av provkroppar har visat sig fungera väl. För att minska spridningen är det emellertid viktigt att använda en homogen och rengjord stålyta utan glödskal. Glödskalet avlägsnas lämpligast genom slipning eftersom betning kan bygga upp ett passivskikt på stålytan. För att undvika att betongrester fastnar på stålytan ska släta provstänger användas.

    Sammanfattningsvis kan sägas att resultaten från laboratorie- och fältmätningarna samt analyser av bindemedlens korrosionskänslighet genom TG- och XRD-analyser visade att denna kombination av mätningar ger ett bra verktyg att bedöma den korrosionsskyddande förmågan hos olika bindemedel. En sammanställning av rangordningen för bindemedlens korrosionsskyddande förmåga redovisas i tabellen nedan.

    Den korrosionsskyddande förmågan hos de undersökta bindemedlen rangordnas från en sammanvägning av de olika provningsmetoderna:

     bra < 1,5 och

     1,5 ≥mindre bra ≤2,5 och

     dåligt > 2,5.

    Som rangordningen visar i tabellen så har bindemedel med slagg och portlandcement med hög C 3A en bra korrosionsskyddande förmåga. Detta beror till största delen på kapaciteten att bilda Friedels salt från monosulfat under härdningsprocessen. Bindemedel som har en låg korrosionsskyddande förmåga har ett lågt C3A-innehåll och en inblandning av flygaska och/eller silika. Det medför dessutom en utspädningseffekt på förmågan att bilda Friedels salt.

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  • 233.
    Selander, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Appliceringsmetoden av impregneringsmedel viktig för livslängden2010In: Betong, ISSN 1101-9190, no 4, p. 33-35Article in journal (Other academic)
  • 234.
    Selander, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Fuktens inverkan på ASR2014In: CBI-nytt, ISSN 0349-2060, no 2, p. 8-Article in journal (Other academic)
  • 235.
    Selander, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Vattenavvisande impregnering förlänger livslängden på betongkonstruktioner2009In: Bygg och Teknik, ISSN 0281-658X, E-ISSN 2002-8350, Vol. 101, no 7, p. 41-44Article in journal (Other academic)
  • 236.
    Selander, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Davant, Nils
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Hydrofob sprutbetong: något för framtiden?2013In: Svensk Bergs & Brukstidning, ISSN 0039-6435, Vol. 92, no 5-6Article in journal (Other academic)
  • 237.
    Selander, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Sederholm, Bror
    Termiskt sprutade offeranoder av zink - fungerar de?2012In: CBI-nytt, ISSN 0349-2060, no 2, p. 5-Article in journal (Other academic)
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  • 238.
    Shafaghat, Hoda
    et al.
    RISE Research Institutes of Sweden, Bioeconomy and Health, Biorefinery and Energy.
    Gulshan, S
    KTH Royal Institute of Technology, Sweden.
    Johansson, Ann-Christine
    RISE Research Institutes of Sweden, Bioeconomy and Health, Biorefinery and Energy.
    Evangelopoulos, Panagiotis
    RISE Research Institutes of Sweden, Built Environment, System Transition and Service Innovation.
    Yang, W.
    KTH Royal Institute of Technology, Sweden.
    Selective recycling of BTX hydrocarbons from electronic plastic wastes using catalytic fast pyrolysis2022In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 605, article id 154734Article in journal (Refereed)
    Abstract [en]

    Non-catalytic and catalytic pyrolysis of two waste electrical and electronic equipment (WEEE) fractions, with two different copper contents (low- and medium-grade WEEE named as LGE and MGE, respectively), were performed using micro- and lab-scale pyrolyzers. This research aimed to fundamentally study the feasibility of chemical recycling of the WEEE fractions via pyrolysis process considering molecular interactions at the interfaces of catalyst active sites and WEEE pyrolyzates which significantly influence the chemical functionality of surface intermediates and catalysis by reorganizing the pyrolyzates near catalytic active sites forming reactive surface intermediates. Hence, Al2O3, TiO2, HBeta, HZSM-5 and spent FCC catalysts were used in in-situ micro-scale pyrolysis. Results indicated that HBeta and HZSM-5 zeolites were more suitable than other catalysts for selective production of aromatic hydrocarbons and BTX. High acidity and shape selectivity of zeotype surfaces make them attractive frameworks for catalytic pyrolysis processes aiming for light hydrocarbons like BTX. Meanwhile, the ex-situ pyrolysis of LGE and MGE were carried out using HZSM-5 in micro- and lab-scale pyrolyzers to investigate the effect of pyrolysis configuration on the BTX selectivity. Although the ex-situ pyrolysis resulted in higher formation of BTX from LGE, the in-situ configuration was more efficient to produce BTX from MGE. © 2022 The Author(s)

  • 239. Shahbazi, Sasha
    et al.
    Salloum, Mohammed
    Mälardalen University, Sweden.
    Kurdve, Martin
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Wiktorsson, Magnus
    Material Efficiency Measurement: Empirical Investigation of Manufacturing Industry2017In: Procedia Manufacturing, ISSN 2351-9789, Vol. 8, no Supplement C, p. 112-120Article in journal (Refereed)
    Abstract [en]

    Abstract Improving material efficiency contributes to reduce the volume of industrial waste as well as resource consumption. However, less has been published addressing on what to measure for material efficiency in a manufacturing company. This paper presents the current practice of material efficiency performance indicators in a manufacturing context through a bottom-up approach. In addition to literature review, the empirical data was collected via a multiple case study at seven global manufacturing companies located in Sweden. The results show that existing material efficiency indicators are limited and are mainly measured as a cost or quality parameter rather than environment. The limited number of measurements relates to the fact that material efficiency is not considered as a central business in manufacturing companies and is managed by environmental department with limited correlation to operation. Additionally, these measurements do not aim to reduce waste volume or improve homogeneity of generated waste.

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  • 240.
    Shahbazi, Sasha
    et al.
    Mälardalen University, Sweden.
    Wiktorsson, Magnus
    Mälardalen University, Sweden.
    Kurdve, Martin
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Jönsson, Christina
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF, Energi och miljö.
    Bjelkemyr, Marcus
    Mälardalen University, Sweden.
    Material efficiency in manufacturing: swedish evidence on potential, barriers and strategies2016In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, no 127, p. 438-450Article in journal (Refereed)
    Abstract [en]

    Improved material efficiency is a key to improve the circular economy and capturing value in industry. Material efficiency reduces the generation of industrial waste, the extraction and consumption of resources, and energy demands and carbon emissions. However, material efficiency in the manufacturing sector, as a means of improving the recyclability, reusability, reduction and prevention of industrial waste, is little understood. This study aims to investigate, on a micro-level, further material efficiency improvement opportunities, barriers and strategies in selected manufacturing companies in Sweden, focusing on increasing waste segregation into high quality circulated raw material. Improvement opportunities at large global manufacturing companies are investigated; barriers hindering material efficiency improvement are identified and categorized at two levels; and strategies that have been deployed at manufacturing companies are reviewed. Empirical findings reveal (1) further potential for improving material efficiency through higher segregation of residual material from mixed and low quality fractions (on average, 26% of the content of combustible waste, in weight, was plastics; 8% and 6% were paper and cardboard, respectively); (2) the most influential barriers are within budgetary, information, management, employee, engineering, and communication clusters; (3) a lack of actual material efficiency strategy implementation in the manufacturing companies. According to our analysis, the majority of barriers are internal and originate within the manufacturing companies, therefore they can be managed (and eradicated if possible) with sufficient resources in terms of man hours, education and investment, better operational and environmental (waste) management, better internal communication and information sharing, and deployment of material efficiency strategies.

  • 241. Shu, Jiangpeng
    et al.
    Plos, Mario
    Structural assessment of bridge deck slabs2014In: Nordic Concrete Research, ISSN 0800-6377, Vol. 50, no 2, p. 453-456Article in journal (Refereed)
    Abstract [en]

    The overall aim of this project is to develop improved methods for assessment of the load carrying capacity and response of bridge deck slabs. This research project was carried out by laboratory experiments, analytical computational analysis, linear and non-linear finite element analyses. The on-going non-linear analyses of tested slabs show possibility to accurately predict the load carrying capacity and to realistically simulate the crack pattern and load distribution.

  • 242.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    6 höjdare från ACI:s vårkonferens2013In: Betong, ISSN 1101-9190, no 3, p. 48-49Article in journal (Other academic)
  • 243.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Betong tål klimatförändringar2011In: Samhällsbyggaren, ISSN 2000-2408, no 5, p. 18-21Article in journal (Other academic)
  • 244.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Betongbeläggningar i tunnlar2010In: Betong, ISSN 1101-9190, no 1, p. 37-39Article in journal (Other academic)
  • 245.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Betongföreningens rekommendationer om betonggolv snart klara2008In: Bygg och Teknik, ISSN 0281-658X, E-ISSN 2002-8350, Vol. 100, no 8, p. 19-20Article in journal (Other academic)
  • 246.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Betongvägar ger hållbarare samhälle2010In: Betong, ISSN 1101-9190, no 6, p. 34-36Article in journal (Other academic)
  • 247.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    BIM och jordbävningar när jenkarna slår all-time-high2010In: Betong, ISSN 1101-9190, no 3, p. 33-35Article in journal (Other academic)
  • 248.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    BIM och jordbävningar när jänkarna slår all-time-high2010In: Betong, ISSN 1101-9190, no 3, p. 33-35Article in journal (Other academic)
  • 249.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Bättre bedömning av vidhäftning mellan betong och betong2009In: Bygg och Teknik, ISSN 0281-658X, E-ISSN 2002-8350, Vol. 101, no 7, p. 12-14Article in journal (Other academic)
  • 250.
    Silfwerbrand, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Detaljer och djup för forskningen framåt2013In: Brännpunkt, Svenska Dagbladets nätupplaga, no 10 augustiArticle in journal (Other academic)
234567 201 - 250 of 312
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