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  • 51.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Lundgren, Monica
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Babaahmadi, Arezou
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Hydration of concrete binders blended with ground granulated blast furnace slag, fly ash and metakaolin2017Report (Other academic)
    Abstract [en]

    This report describes a study on the effects of ground granulated blast furnace slag, low calcium fly ash and metakaolin on the hydration behavior of different binder pastes blended with these SCM. The study investigated early heat development, phase assemblages at different ages, strength gain, changes in porosity and pore sizes, pore water OH-concentration, development of the microstructure and the micro chemistry of the binder pastes.It was shown that all SCM impact the pore size distribution of pastes of different ages. Compared to a reference paste without SCM, SCM containing pastes shift their pore size range to smaller sizes, the more SCM the pastes contain. The total porosity depends on the type of SCM. With slag, there was a tendency to decrease the total porosity with increasing SCM content. With fly ash, total porosity was increased with increasing fly ash content. The strength development of slag and fly ash containing mortars is under that of a Portland cement reference mortar within the first 28 days. However, after 28 d strength gain, in particular with fly ash is considerable compared to the reference. With metakaolin already at early ages a strong increase in strength was observed. After that, the strength development was parallel the one of the reference mortar. Aluminum containing SCM contribute to the formation of AFm phases. AFm phases increase the chloride binding in seawater or deicing salt exposed concretes. In particular metakaolin and fly ash contribute, due to their high alumina content, to the formation of AFm phases but also increase the aluminum content in the C-S-H phases.

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  • 52.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Lundgren, Monica
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Malaga, Katarina
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Development of pore structure and hydrate phases of binder pastes blended with slag, fly ash and metakaolin – A comparison2015In: ICCC 2015 Beijing: The 14th International Congress on the Chemistry of Cement, 2015Conference paper (Refereed)
    Abstract [en]

    Blended binder systems in concrete have been in use for many years. However, over the recent discussions on the sustainability of cement and concrete the topic became of paramount importance for the construction industry. In Sweden blended binder systems in concrete were applied fairly recently and supplementary cementitious materials (SCM) were not used largely before. In Sweden over the last 30 years engineering structures were built, with exceptions, with a low alkali, sulfate resistant Portland cement due to domestic requirements. Therefore, in context to blended binder systems durability is a major point being discussed. Most interest lays in the resistance towards frost, carbonation and chloride penetration and the experience with blended systems was limited. It is therefore the goal of this study to investigate blended binder systems over a longer hydration period of up to two years in context to durability. The results presented here will focus on the porosity and hydrate phase development within the first 90 days of hydration. In this study in total 9 different binder blends were studied. The blends included different replacement levels with granulated blast furnace slag from a Swedish producer, fly ash from a Danish power plant and commercially available metakaolin. The matrix included also one set of factory-blended cements (with interground fly ash and slag). The pore structure was investigated by mercury intrusion porosimetry (MIP), phase development by powder x-ray diffraction (XRD). The results are based on the evaluation of binder paste samples. Compared to a reference series consisting of a CEM I the slag containing series showed a continuous decrease of the total pore volume with increasing slag content over 90 days of hydration. The phase development showed a constant increase in monosulfate and hydrotalcite. The amount of these phases increased with increasing slag content. Notable was consumption of C4AF, which increased with the amount of slag and a decrease of C2S reaction. Compared to the reference Portland cement paste the fly ash containing pastes showed increased total pore volumes when the fly ash was just added. For the cement paste with interground fly ash the porosity development was the same as for the reference paste. The phase development for these series showed up to 28 days of hydration formation of ettringite, hemicarbonate and monocarbonate. After 91 days monosulfate was dominating and the amount of hemicarbonate was decreasing. The paste series with 15 % metakaolin showed a strong decrease in total pore volume compared to the reference series within 2 days. Afterwards the pore volume almost leveled to a constant value. The hydration phases included in the beginning large amounts of monosulfate, ettringite and hemicarbonate but changed after 91 days in favor to ettringite and monocarbonate. The metakaolin blend showed the lowest amounts of portlandite in all series, indicating a strong pozzolanic reactivity. The different hydrate phases, in particular AFm phases can help to explain a different behavior towards, e.g. chloride binding. The pore structure development has a large impact not only on strength development but also for ion and moisture transport as well as for carbonation in all series.

  • 53.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute. BAM Federal Institute for Materials Research and Testing, Germany.
    Malaga, Katarina
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute. BAM Federal Institute for Materials Research and Testing, Germany.
    Influence of hydrophobicity and oleophobicity on cleaning graffiti on concrete panels and natural stones2012In: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR), TAYLOR and FRANCIS GROUP, LONDON, UK , 2012, p. 269-275Conference paper (Refereed)
    Abstract [en]

    Anti-Graffiti Systems (AGS) are meant to make the cleaning process more efficient by inserting a layer between the paint and the substrate. This layer can have a low surface energy thus make it difficult for the paint to stick to the substrate or it may be easily removed together with the paint. This paper is presenting results from a study of how hydrophobicity and oleophobicity influence the cleaning efficiency of graffiti paints from concrete and natural stones. The results demonstrated that high hydrophobicity and high oleophobicity are not guaranteeing satisfying cleaning effects. The physical properties of a substrate in combination with the characteristics of the AGS layer decide about the cleaning effect.

  • 54.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Rübner, Katrin
    The microstructure of concrete made with municipal waste incinerator bottom ash as an aggregate component2006In: Cement and Concrete Research, Vol. 36, no 8, p. 1434-1443Article in journal (Refereed)
    Abstract [en]

    The interaction of municipal solid waste incinerator bottom ash (MSWI bottom ash), when utilized as an aggregate in concrete, with the cement matrix was investigated. The most prominent reaction observed in lab and field concrete was the formation of aluminium hydroxide and the release of hydrogen gas from aluminium grains reacting in the alkaline environment. The expansive aluminium reaction was identified as a main cause of extensive spalling on the concrete surface. Due to the higher content of bottle glass as part of the ash, in all samples, reaction products of an alkali-silica reaction (ASR) could be observed as well. However, damage due to ASR were less severe than those caused by the aluminium reaction. The expansion rates were low and only a few of the lab samples showed cracking. Microstructural analysis of the samples indicated clearly that a large quantity of the alkali-silica gel which was formed was accommodated in the pores and voids without exerting any strain on the material.

  • 55.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Schlegel, Moriz-Caspar
    BAM Bundesanstalt für Materialforschung und -prüfung, Germany.
    Emmerling, Franziska
    BAM Bundesanstalt für Materialforschung und -prüfung, Germany.
    Malaga, Katarina
    Novel techniques for studying damage mechanisms of cementitious matrices affected by sulphate attack2012In: fib symposium Concrete Structures for Sustainable Community / [ed] Bager, D.H., Silfwerbrand, J., 2012, p. 267-270Conference paper (Refereed)
    Abstract [en]

    In the presented study novel methods were applied to analyse the changes of the cement phase composition due to sulphate attack. The analytical methods were based on spatial x-ray diffraction using synchrotron radiation and incoherent white x-ray radiation. The spatial resolution of the methods is ca. 10 μm and 400 μm, respectively. The specimens for phase analysis consisted of thick sections of sulphate exposed cement paste specimen. Different cement pastes showed a clear evolution in the sulphate and phase distribution. Phase analytical data was compared to chemical information acquired by SEM-EDX analysis.

  • 56.
    Mueller, Urs
    et al.
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Williams Portal, Natalie
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Flansbjer, Mathias
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Malaga, Katarina
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Textile Reinforced Reactive Powder Concrete and its Application for Facades2017Conference paper (Refereed)
    Abstract [en]

    Reactive powder concrete (RPC) is a fairly novel material with extraordinary strength and durability properties. Due to these properties, it is increasingly being utilized also for external facade cladding thus enabling a considerable reduction in the thickness of concrete elements. Commercial RPC formulations on the market have drawbacks in terms of sustainability due to their high clinker content and heat curing which is often applied to increase final strength and material density. The presented study focusses on improved formulations with higher replacement levels of cement clinker by supplementary cementitious materials (SCMs). One different mix formulation was designed and tested in terms of mechanical properties. The formulation was combined with carbon textile reinforcements primarily to enhance the flexural and tensile behavior of the material. The results showed that even with clinker replacement levels of up to 33 % of the total binder amount, a satisfactory mechanical performance of the RPC mix could still be achieved. Fairly steep strength gains rendered heat treatment unnecessary. The incorporation of carbon textile fiber grids proved to be effective in improving the post peak performance of the RPC. However, their performance depended strongly on the bond between the carbon grid and the RPC. Higher moister contents in the concrete proved to reduce the bond strength between the carbon textile and the cement paste. This is maybe less relevant for facades but structural elements with textile reinforcement and RPC might perform less well in completely submerged environment.

  • 57. Månsson, Hans
    et al.
    Henrik, Radomski
    Olenfalk, Pia
    Trägårdh, Jan
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Edwards, Ylva
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Lundgren, Dennis
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Mansfeldt, Nikolaj
    Kinnmark, Mikael
    Nilsson, Alexander
    Norderup Michelson, Elisabeth
    Jutewik, Mikael
    Hellqvist, Peter
    Bylin, Anders
    Ullsten, Åsa
    Wallin, Magnus
    Samuelsson, Hans
    Svenningsson, Catharina
    Gustavsson, Per
    Olofsson, Mikael
    Antonsson, Ulf
    Skärin, Jörgen
    Lejonmark, Sebastian
    Grönatakhandboken: Betong, isolering och tätskikt2017Report (Other academic)
  • 58.
    Nejad Ghafar, Ali
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Draganovic, A.
    KTH Royal Institute of Technology, Sweden.
    Larsson, S.
    KTH Royal Institute of Technology, Sweden.
    A laboratory study on grouting in vibratory host rock2019In: ISRM 9th Nordic Grouting Symposium, NGS 2019, International Society for Rock Mechanics and Rock Engineering , 2019, p. 131-138Conference paper (Refereed)
    Abstract [en]

    To sufficiently seal an underground facility in fractured rock, it is necessary to obtain adequate grout spread into the surrounding fractures. The grout spread itself depends on parameters, the most significant of which are the grout filtration tendency and rheological properties. These properties can be affected by the applied pressure. Use of high-frequency oscillating pressure is a method that has been shown to improve grout spread by virtue of reducing the grout apparent viscosity. However, this method has not yet been industrialized due to limited efficiency and rapid attenuation of the oscillation along a fracture. To address these issues, we present a pilot investigation to show the potential of high-frequency oscillation applied to the host rock to improve grout spread in fractures. The proposed method is examined using an artificial fracture, the so-called Varying Aperture Long Slot (VALS) that has been recently developed. The results are compared between the two cases with and without vibration. The study shows the potential of the method on improving the grout spread in rock fractures.

  • 59.
    Plos, Mario
    et al.
    Chalmers University of Technology, Sweden.
    Shu, Jiangpeng
    Chalmers University of Technology, Sweden.
    Zandi, Kamyab
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute. Chalmers University of Technology, Sweden.
    Lundgren, Karin
    Chalmers University of Technology, Sweden.
    A multi-level structural assessment strategy for reinforced concrete bridge deck slabs2017In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980, Vol. 13, no 2, p. 223-241Article in journal (Refereed)
    Abstract [en]

    This paper proposes a multi-level assessment strategy for reinforced concrete bridge deck slabs. The strategy is based on the principle of successively improved evaluation in structural assessment. It provides a structured approach to the use of simplified as well as advanced non-linear analysis methods. Such advanced methods have proven to possess great possibilities of achieving better understanding of the structural response and of revealing higher load-carrying capacity of existing structures. The proposed methods were used for the analysis of previously tested two-way slabs subjected to bending failure and a cantilever slab subjected to a shear type of failure, in both cases loaded with concentrated loads. As expected, the results show that more advanced methods yield an improved understanding of the structural response and are capable of demonstrating higher, yet conservative, predictions of the load-carrying capacity. Nevertheless, the proposed strategy clearly provides the engineering community a framework for using successively improved structural analysis methods for enhanced assessment in a straightforward manner.

  • 60.
    Rodhe, Lena
    et al.
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Kalinowski, Mariusz
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Pizzul, Leticia
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Ascue, Johnny
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Tersmeden, Marianne
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Slurry acidification: Micro-structural analyses of concrete after exposure in acidified and non-acidified slurry2019Report (Other academic)
    Abstract [en]

    Samples of three different concrete qualities were prepared and hardened, before exposure in cattle slurry without sulphuric acid (A) and with sulphuric acid added until pH<5.5 (B). The samples were exposed for two years in containers with about 45 L slurry. The boxes with slurry and concrete samples were placed in a ventilated room at 20 °C. The slurry and air temperatures were recorded continuously with temperature loggers, data being recorded every third hour. The slurry level in the boxes and the slurry pH were checked regularly during the experiment. Slurry or acid was added, if necessary, to maintain the level and pH<5.5. Before pH measurements, the slurry was stirred gently in both boxes. To restrict evaporation, the containers had non-airtight plastic covers between measurements.

    Half-way through exposure, the old slurry was replaced with fresh slurry (acidified and non-acidified treatments) to mimic conditions in farm storage where fresh slurry is added continuously during storage. After two years’ storage, the experiment was finalised. The concrete samples were taken out of the slurry, washed gently with water and put into labelled plastic bags.

    The samples were delivered to RISE CBI’s concrete laboratory, where the structural analyses were performed. These used petrographic microscopy techniques to examine the effects of exposure to two potentially aggressive environments, non-acidified and acidified cattle slurry, on concrete with three different mixes. The studied surfaces in the concrete samples were oriented vertically in the plastic containers. Polished sections were evaluated with a stereo microscope, and thin sections were evaluated using a polarising microscope and sources for visible and UV light.

    The results of the study show that the acidified slurry is more chemically aggressive to the cement paste in all the concrete mixes analysed. This can be explained by the solution’s lower pH.

    The extent of the chemical attack correlates with the initial quality of the concrete mix (water-powder ratio and type of binder). The deepest chemical attacks were observed in samples A1 and B1 consisting of “regular” concrete mix with w/c 0.59. The “long lasting quality” (LLC) concrete with a binder specially developed for low-pH environments shows markedly better resistance to chemical attack.

    The effects of the chemical attack on concrete after two years’ exposure can be classified as weak, consisting mainly of an increase in the capillary porosity of the cement paste in the outer layer of the concrete. The increase in porosity is considered to be due to the partial leaching of calcium hydroxide.

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  • 61.
    Rogers, Patrick
    et al.
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Silfwerbrand, Johan
    KTH Royal Institute of Technology, Sweden.
    Gram, Annika
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Selander, A.
    Cementa AB, Sweden.
    Bulk hydrophobic civil engineering concrete for nordic conditions – Freeze thaw action2019In: Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, International Federation for Structural Concrete , 2019, p. 2044-2051Conference paper (Refereed)
    Abstract [en]

    Concrete is a composite building material which long term function can be modified for example by changing the water to cement ratio (w/c) or by adding in other chemical admixtures to change the fresh and hardened properties of the concrete. The overall goal of this study is to reduce the water absorption capacity of the cement paste/microstructure by at least 85 %. This is achieved by using bulk hydrophobic agents in the mixing phase rather than post hardened surface application. Numerous commercial agents and triglycerides (vegetable oils) were tested and showed promising results at a dosage equal to 3% of cement weight. This though affected compressive strengths negatively. As these concretes will be exposed to Nordic winter conditions, the concrete should perform well under repeated salt water freezing and thawing. This continued study will show how a selection of these bulk hydrophobic concretes performed during this part of the study. The concrete has a w/c = 0.4 with a cement content (CEM I) of 430 kg/m3.

  • 62.
    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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  • 63.
    Silva, Nelson
    et al.
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Andersson, L
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Influence of fine recycled concrete aggregates in the design and properties of UHPC2019In: Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, International Federation for Structural Concrete , 2019, p. 165-172Conference paper (Refereed)
    Abstract [en]

    The properties of UHPC containing fine recycled concrete aggregates (FRCA) are investigated. FRCA in the particle range 0.125-2 mm in diameter were used. The water-binder ratio was kept constant for all mixes. Natural crushed aggregates (NCA) were replaced by 0%, 25%, 50%,75% and 100% FRCA. Autogenous shrinkage decreased by 16-45% with an increase in the amount of FRCA whereas drying shrinkage increased by 12-33%. Generally, there was strength increase of 4-17% for concrete containing FRCA after 1 day. However, after 28 days the difference is negligible. Hydration kinetics were not affected by the replacement of NCA by FRCA.

  • 64.
    Sykora, Miroslav
    et al.
    Czech Technical University in Prague, Czech Republic.
    Krejsa, Jan
    Czech Technical University in Prague, Czech Republic.
    Mlcoch, Jan
    Czech Technical University in Prague, Czech Republic.
    Prieto Rábade, Miguel
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Tanner, Peter
    Instituto de Ciencias de la Construcción EduardoTorroja, Spain.
    Uncertainty in shear resistance models of reinforced concrete beams according to fib MC20102018In: Structural Concrete, ISSN 1464-4177, E-ISSN 1751-7648, Vol. 19, no 1, p. 284-295Article in journal (Refereed)
    Abstract [en]

    Load bearing capacity can be predicted by appropriate modeling of material properties, geometry variables, and uncertainties associated with an applied model for the failure mechanism under consideration. The submitted study investigates shear resistance model uncertainties for reinforced concrete beams with and without shear reinforcement, considering large test databases and various levels of approximation offered by fib Model Code 2010. Model uncertainty is treated as a random variable and its characteristics are obtained by comparing test and model outcomes. The sensitivity of model uncertainty with respect to basic variables is analyzed. For beams with stirrups, Level III is recommended for practical applications. Its predictions are shown to be independent of the amount of shear reinforcement and have reasonable bias and dispersion around test results. For beams without shear reinforcement, the use of Level II is advisable and a distinction between lightly reinforced and moderately to heavily reinforced beams should be made.

  • 65.
    Tahershamsi, M.
    et al.
    Chalmers University of Technology, Sweden.
    Fernandez, I.
    Chalmers University of Technology, Sweden.
    Zandi, Kamyab
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute. Chalmers University of Technology, Sweden.
    Lundgren, K.
    Chalmers University of Technology, Sweden.
    Four levels to assess anchorage capacity of corroded reinforcement in concrete2017In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 147, p. 434-447Article in journal (Refereed)
    Abstract [en]

    Corrosion of reinforcement affects anchorage capacity. In this study, four levels of analyses were, for the first time, compared with each other and to tests of naturally corroded beams. In the most advanced approach, three-dimensional non-linear finite element (3D NLFE) analyses employing previously developed bond and corrosion models were carried out. These analyses agreed well with the experiments in terms of crack pattern and maximum load capacity. The next approach consisted of 3D NLFE analyses with a pre-defined bond-slip relation between concrete and reinforcement, resulting in reasonable agreement; however, the anchorage capacity was overestimated and the crack pattern deviated from the experiments. At the next level, the bond-slip relation was used together with a measured available anchorage length, and the anchorage capacity was obtained by numerically solving the one-dimensional differential equation; the results were reasonably close to the experiments. In the most simplified approach, a constant bond stress was assumed together with the available anchorage length measured, which underestimated the capacities. In conclusion, the more advanced analyses provide reliable information regarding the structural behaviour, while the two simplified methods are well suited for use in practice.

  • 66.
    Tahershamsi, Mohammad
    et al.
    Chalmers University of Technology, Sweden.
    Fernandez, Ignasi
    Chalmers University of Technology, Sweden.
    Lundgren, Karin
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute. Chalmers University of Technology, Sweden.
    Zandi, Kamyab
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB, Betong & Berg. Chalmers University of Technology, Sweden.
    Investigating correlations between crack width, corrosion level and anchorage capacity2017In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980, Vol. 13, no 10, p. 1294-1307Article in journal (Refereed)
    Abstract [en]

    In assessing existing structures, inspection results need to be linked to the effects on load-carrying capacity; to provide such information, this study has investigated the correlation between splitting crack width, corrosion level and anchorage capacity. The study was based on 13 reinforced concrete beams that had been exposed to natural corrosion for 32 years, 11 beams with splitting cracks and 2 without. The crack pattern and widths were documented before undergoing structural testing of anchorage capacity. Thereafter, the reinforcement bars were extracted and their corrosion levels measured using two methods, gravimetric weight loss and 3D scanning. The corrosion level from the weight loss method was approximately twice as large; possible reasons are horizontal or subsurface corrosion pits, and the cleaning method. Further, for the same corrosion level, the specimens in this study had much larger crack widths and slightly lower bond capacity than the artificially corroded tests in the literature; a possible reason is that these specimens had been subjected to combined corrosion and freezing. However, the corrosion level and reduction in bond capacity related to crack width were both lower in the present than in previous studies in the literature. Thus, by formulating a damage indicator from the damage visible in the form of crack widths from artificial test data, the structural capacity is estimated to be on the safe side.

  • 67.
    Tang, Luping
    et al.
    Chalmers University of Technology, Sweden.
    Boubitsas, Dimitrios
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Utgenannt, Peter
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Abbas, Zareen
    University of Gothenburg, Sweden.
    Chloride Ingress and Reinforcement Corrosion - After 20 years’ field exposure in a highway environment2018Report (Other academic)
    Abstract [en]

    This report presents the results from a research project financed by Trafikverket, the Swedish Transport Administration, co-financed by Cementa AB.

    In this part of the project work about 35 chloride profiles and ten moisture profiles have been measured from various types of concrete specimens exposed to a de-icing salt highway environment for about 20 years. The non-destructive technique, RapiCor, for corrosion measurement was used to assess the conditions of steel embedded in concrete beams with different types of binder and water-binder ratios. The ClinConc model were used to predict chloride ingress in concrete. Some laboratory test methods and numerical simulations were carried out to study the behaviour of concrete after long-term exposure.

    The results show that chloride ingress profiles measured after 2

    0 years’ exposure under the de-icing salt highway environment are in general lower than those measured after the similar exposure duration under the marine splash environment.

    Non-destructive corrosion measurement by RapiCor instrument is in general in reasonably good agreement with chloride ingress. The corrosion rust observed from the destructive examination verified again that the non-destructive technique RapiCor is a useful tool for detection of ongoing corrosion of steel in concrete.

    The ClinConc model in general gives reasonably good prediction of chloride ingress front in the bulk concrete but not in the near surface zone due to the drying-wetting cycles in the highway environment. After a certain modification with the consideration of redistribution of bound chloride in the near surface zone, the model can reasonably well describe the chloride ingress profiles measured from the exposure site.

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  • 68.
    Wallqvist, Viveca
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Bioscience and Materials, Chemistry and Materials.
    Kjell, Gunnar B.
    RISE - Research Institutes of Sweden (2017-2019), Safety and Transport, Safety.
    Cupina, Ena
    RISE - Research Institutes of Sweden (2017-2019), Bioscience and Materials, Chemistry and Materials. Chalmers Univeristy of technology, Sweden.
    Kraft, Lars
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Deck, Caroline
    University of Strasbourg, France.
    Willinger, Rémy
    University of Strasbourg, France.
    New functional pavements for pedestrians and cyclists2017In: Accident Analysis and Prevention, ISSN 0001-4575, E-ISSN 1879-2057, Vol. 105, p. 52-63Article in journal (Refereed)
    Abstract [en]

    When many fields of pedestrian and cyclist safety have been extensively studied, the surfacing has long been left unquestioned, despite being developed for another mode of transport and being one of the main causes for falls and fall injuries. In this project new surfacing materials for pedestrian and cyclist safety have been produced. Focusing on augmenting previously largely disregarded parameters as impact absorption, comfort and visibility at the same time as avoiding deteriorating of crucial parameters as friction and wear resistance. Rubber content, binder type, and pigment addition have been varied and evaluated. The results demonstrate that by increasing rubber content of the mixtures the head injury criterion (HIC) value and injury risk can be decreased while maintaining frictional properties according to existing criteria. Assembly of test-lanes demonstrate that some developed materials experience lower flow and component separation than standard materials due to rubber addition, calling for further optimisation of construction procedure linked to content development. Initial trials on the test-lanes indicate that a polyurethane (PU) based material has high cycling comfort, visibility and can be modified with phosphorescence properties. For standard asphalt, impact absorption might be inflicted by modification of bitumen alone but is mostly augmented by rubber addition. The results also indicate that rubber content can decrease ice formation on the materials.

  • 69.
    Werder, Julia
    et al.
    Bundesanstalt für Materialforschung und ‐prüfung, Germany.
    Simon, Sebastian
    Bundesanstalt für Materialforschung und ‐prüfung, Germany.
    Lehmann, Christian
    TU Berlin, Germany.
    Selleng, Christian
    TÜV Nord MPA, Germany.
    Fontana, Patrick
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Meng, Birgit
    Bundesanstalt für Materialforschung und ‐prüfung, Germany.
    Autoclaving of ultra-high performance concrete (UHPC)2018In: ce/papers, ISSN 2509-7075, Vol. 2, no 4, p. 131-136Article in journal (Refereed)
    Abstract [en]

    Abstract By the combination of an optimized granulometry, a reduced water?cement ratio and the use of superplasticizers ultra-high performance concrete achieves a compressive strength of over 150 N/mm2 and a high resistance regarding acids and water-soluble salts. In different research projects the effect of an autoclavation on the mechanical strength and the phase composition was analyzed. In systematic studies, the concrete mix and the process parameters were varied. The results show that autoclavation leads to an improved pozzolanic and hydraulic reaction and significantly improves the mechanical strength compared to a conventional thermal treatment. If a minimum time-span for hydration is ensured, the achievable strength level is not dependent on the prestorage time. However, the duration of the autoclaving is significant. After the maximum strength is reached there is only a very slight decrease, even if unrealistically long autoclaving times are applied.

  • 70.
    Whittaker, M. J.
    et al.
    Queen’s University Belfast, UK.
    Grigoriadis, K.
    Queen’s University Belfast, UK.
    Soutsos, M.
    Queen’s University Belfast, UK.
    Sha, W.
    Queen’s University Belfast, UK.
    Klinge, A.
    ZRS Architekten Ingenieure GmbH, Germany.
    Paganoni, S.
    ZRS Architekten Ingenieure GmbH, Germany.
    Casado, M.
    ACCIONA Construction Technology Centre, Spain.
    Brander, Linus
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Mousavi, Marjan
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Scullin, M.
    CDE Global Ltd, UK.
    Correia, R.
    CREAGH Concrete, UK.
    Zerbi, T.
    STAM S.R.L., Italy.
    Staiano, G.
    STRESS S.C.A.R.L., Italy.
    Merli, I.
    VORTEX HYDRA S.R.L., Italy.
    Ingrosso, I.
    CETMA, Italy.
    Attanasio, A.
    CETMA, Italy.
    Largo, A.
    CETMA, Italy.
    Novel construction and demolition waste (CDW) treatment and uses to maximize reuse and recycling2021In: Advances in Building Energy Research, ISSN 1751-2549, E-ISSN 1756-2201, Vol. 15, no 2, p. 253-269Article in journal (Refereed)
    Abstract [en]

    The EU Waste Framework Directive 2008/98/EC states that all member states should take all necessary measures in order to achieve at least 70% re-use, recycling or other recovery of non-hazardous Construction and Demolition Waste (CDW) by 2020. In response, the Horizon 2020 RE4 project consortium (REuse and REcycling of CDW materials and structures in energy efficient pREfabricated elements for building REfurbishment and construction) consisting of 12 research and industrial partners across Europe, plus a research partner from Taiwan, was set up. For its success, the approach of the Project was manifold, developing sorting technologies to first improve the quality of CDW-derived aggregate. Simultaneously, CDW streams were assessed for quality and novel applications developed for aggregate, timber and plastic waste in a variety of products including structural and non-structural elements. With all products considered, innovative building concepts have been designed in a bid to improve future reuse and recycling of the products by promoting prefabricated construction methods and modular design to ease future recycling and increase value of the construction industry. The developed technologies and products have been put to the test in different test sites in building a two-storey house containing at least 65% of CDW. © 2019, © 2019 The Author(s)..

  • 71.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Boubitsas, Dimitrios
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Sprickor i betong2019Report (Other academic)
    Abstract [en]

    The Swedish Fortifications Agency’s (FORTV) property stock consists of numerous concrete structures built both above and below rock. Some of these structures have experienced cracking overtime which, in turn, can lead to subsequent problems such as reinforcement corrosion and deterioration of structural performance. Due to the fact that in many cases there are building requirements related to protection against forced entry and weapon attacks, it is of great importance for FORTV to gain an understanding of how cracks are developed, the significance of the crack development, how do cracks affect the performance, as well as how cracks can be remediated. A similar project, with a focus on so-called access protection, has earlier been managed by FORTV. During the project, it was ascertained that there is inadequate knowledge pertaining to crack repair.

    The goals of this project were the following:Suggest a method or a tool to evaluate the extent of cracking in concrete structures which are included in protective facilitiesDescribe which parameters can initiate cracking.Describe repair methods to reinstate the functionality of concrete structures.

    Cracking naturally takes place during the normal use of a concrete structure without influencingthe structure’s functionality given that it is designed correctly. However, there are other mechanisms which can initialize cracking in concrete structures. These mechanisms take place during various time periods (hardening, after hardening andduring the service life). Three crack groups have been identified accordingly: a) cracks due to poor workmanship, b) cracks due to chemical deterioration mechanisms and c) loading cracks.

    Damage identification and a condition assessment can be conducted in different stages to determine the extent of cracking. It is firstly recommended to review the existing documentation coupled to the structure, followed by a preliminary inspection (visual), additional non-destructive testing and lastly destructive testing. Repairs are selected according to the source of the damage, it is to say concrete defects or corroded reinforcement. In addition, the functionality requirements for the structure shall be evaluated and the selected methods shall be assessed according to e.g. lifespan and cost.

     

  • 72.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Flansbjer, Mathias
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Malaga, Katarina
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Mueller, Urs
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Anchorage of Textile Reinforcement in High-Performance Concrete2017Conference paper (Refereed)
    Abstract [en]

    The mechanical properties of textile reinforced high-performance concrete (TRHPC) applied in innovative lightweight sandwich elements has been investigated in the framework of EC supported FP7 project, H-House (Healthier Life with Eco-innovative Components for Housing Constructions). TRHPC offers new possibilities for architects and engineers to create thinner and more durable concrete façade elements. Textile reinforcement grids are typically woven from non-metallic rovings usually consisting of continuous glass, rock or carbon fibres. The most promising performing textile reinforcement alternative in terms of mechanical and durability performance consists of carbon fibres. Carbon fibres do however have an inherent smooth surface which is unfavourable concerning its bond to the cement paste, which is often improved by polymer-based coatings. The bond behaviour, being a critical design parameter, should be investigated for TRHPC in order to understand limitations regarding required anchorage lengths for use in applications such as façade elements. The aim of this study was to quantify and verify the required anchorage length for a selected epoxy impregnated carbon textile reinforced TRHPC combination. To achieve this aim, the bond behaviour, leading to a suitable anchorage length (or overlap), was firstly studied by means of pull-out tests. Thereafter, the ultimate strength of the composite material was measured via uniaxial tensile testing with and without an overlap splice according to the findings from the pull-out tests. Optical measurements during the pull-out tests were performed using a video extensometer technique and by Digital Image Correlation (DIC) for the uniaxial tensile tests. Results indicated that the required anchorage length to yield rupture of the textile reinforcement in pull-out was deemed appropriate as an overlapping length when tested in tension. The combination of these two experimental methods on the composite level was useful for determining the overlapping length required for the TRHPC which could be applied in larger scale applications.

  • 73.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Flansbjer, MathiasRISE - Research Institutes of Sweden, Safety and Transport, Safety.Mueller, UrsRISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Analysis of the Flexural Behavior of Textile Reinforced Reactive Powder Concrete Sandwich Elements Using Optical Measurements2018Conference proceedings (editor) (Refereed)
    Abstract [en]

    Prefabricated and non-load bearing sandwich façade elements were developed using Textile Reinforced Reactive Powder Concrete (TRRPC) along with low density Foamed Concrete (FC) and Glass Fiber Reinforced Polymer (GFRP) continuous connecting devices. Four-point bending tests were performed on large-scale TRRPC sandwich element beams to characterize the structural performance, which included the flexural capacity, level of composite action, resulting deformation, crack propagation and failure mechanisms. Optical measurements based on Digital Image Correlation (DIC) were taken simultaneously to enable a detailed analysis of the underlying composite action. The structural behavior of the developed elements was found to be highly dependent on the stiffness and strength of the connectors to ensure composite action between the two TRRPC panels.

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  • 74.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Flansbjer, Mathias
    RISE - Research Institutes of Sweden, Safety and Transport, Safety.
    Mueller, Urs
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Experimental Study on Anchorage in Textile Reinforced Reactive Powder Concrete2017In: Nordic Concrete Research, ISSN 0800-6377, Vol. 57, no 2, p. 73-88, article id 6Article in journal (Refereed)
    Abstract [en]

    The EC funded project SESBE (Smart Elements for Sustainable Building Envelopes) focused on utilizing new types of cementitious materials for reducing the mass and thickness of façade elements while increasing their thermal performance. A method enabling the quantification and verification of the required anchorage length for a given textile reinforced reactive powder concrete (TRRPC) is presented. At the material level, tensile tests were conducted to determine the tensile properties of the reinforcement. Pull-out tests were applied to quantify the required anchorage length, while uniaxial tensile tests were performed to quantify the ultimate strength and verify the suitability of the anchorage length at the composite level. The combination of these methods was deemed useful to determine the overlapping length required for larger scale façade applications.

  • 75.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Flansbjer, Mathias
    RISE - Research Institutes of Sweden (2017-2019), Safety and Transport, Safety.
    Zandi, Kamyab
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Wlasak, Lech
    Mostostal Warszawa SA, Poland.
    Malaga, Katarina
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Bending behaviour of novel Textile Reinforced Concrete-foamed concrete (TRC-FC) sandwich elements2017In: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 177, p. 104-118Article in journal (Refereed)
    Abstract [en]

    A novel sandwich element design consisting of two facings made of carbon reinforced Textile Reinforced Concrete (TRC), a low density foamed concrete (FC) core and glass fibre reinforced polymer (GFRP) connecting devices was experimentally investigated according to quasi-static and cyclic quasi-static fourpoint bending. Optical measurements based on Digital Image Correlation (DIC) were taken during testing to enable a detailed analysis of the bending behaviour and level of composite action. A model, verified by the experiments, was developed based on non-linear finite element analysis (NLFEA) to gain further insight on the failure mechanisms. Under both loading conditions, the bending behaviour of the TRCFC composite elements was characterized by favourable load bearing capacity, partial composite action, superior ductility and multiple fine cracking. The connecting devices were found to be the critical elements causing the initial failure mechanism in the form of localized pull-out within an element.

  • 76.
    Williams Portal, Natalie
    et al.
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute. Chalmers University of Technology, Sweden.
    Nyholm Thrane, Lars
    DTU Technical University of Denmark, Denmark.
    Lundgren, Karin
    Chalmers University of Technology, Sweden.
    Flexural behaviour of textile reinforced concrete composites: experimental and numerical evaluation2017In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 50, no 4, p. 1-14Article in journal (Refereed)
    Abstract [en]

    Textile reinforced concrete (TRC) is an innovative high performance composite material which has revealed many promising attributes in various applications but test methods and reliable numerical models need to be established to reduce uncertainty and the need for extensive experimental studies. The aim of this paper was to evaluate the flexural behaviour of carbon textile reinforced TRC slabs both experimentally and numerically along with the characterization of the material and interaction level properties. The experimental results characterizing the bond behaviour were linked to the experimental behaviour of a rectangular TRC slab in bending through numerical analyses. A 2D macro-scale FE-model of the tested TRC slab was developed based on the related experimental input. Comparison of the numerical results to the experiments revealed that the flexural failure was governed by bond, and reasonable agreement was obtained in terms of crack development, deflections, maximum load, and failure mode. Accordingly, the experiments further indicated that the flexural behaviour of TRC slabs is greatly influenced by the bond quality.

  • 77.
    With, G. D.
    et al.
    NRG Nuclear Research and Consultancy Group, The Netherlands.
    Michalik, B.
    GIG Central Mining Institute, Poland.
    Hoffmann, B.
    BfS Federal Office for Radiation Protection, Germany.
    Döse, Magnus
    RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Development of a European harmonised standard to determine the natural radioactivity concentrations in building materials2018In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 171, p. 913-918Article in journal (Refereed)
    Abstract [en]

    In 2013 the European Commission has published its latest basic safety standards for protection against the dangers arising from exposure to ionising radiation (Council Directive 2013/59/Euratom). The council directive regulates radiation exposure from building materials through the presence of radioactivity (226Ra, 232Th and 40K) in these materials. Pivotal to successful regulation is the availability of a harmonised test method for the determination of the radionuclide concentrations as these nuclides form the basis for dose assessment and compliance. In 2017 a Technical Specification (CEN, 2017) on the determination of the activity concentrations of 226Ra, 232Th and 40K in construction products was published by the European Committee for Standardization (CEN). The purpose of this work is to give an outline of the proposed method, with the protocols for sampling, measurement and data processing as well as a summary of the robustness testing and the expert comments that have been received following the final consultation. 

  • 78.
    Olander, Stefan (Editor)
    Lund University, Sweden.
    Mjörnell, Kristina (Editor)
    RISE - Research Institutes of Sweden (2017-2019), Built Environment. Lund Universtiy, Sweden.
    Femenias, Paula (Editor)
    Chalmers University of Technology, Sweden.
    Helsing, Elisabeth (Editor)
    RISE - Research Institutes of Sweden (2017-2019), Built Environment, CBI Swedish Cement and Concrete Research Institute.
    Wallenten, Petter (Editor)
    Lund Universtiy, Sweden.
    Hållbar renoveringur ett helhetsperspektiv: En antologi från forskningsmiljön SIRen2019Report (Other academic)
    Abstract [sv]

    Innehållsförteckning:

    - Förord  av Madeleine Nobs, NCC

    - Innehållsförteckning

    - Tvärdisciplinär forskning möjliggör hållbar integrerad renovering av Kristina Mjörnell, RISE och Lunds Universitet

    - SIRens-process för hållbar renovering med uppföljning av Petter Wallentén, Lunds Universitet, Kristina Mjörnell, RISE och Lunds Universitet

    - Praktisk tillämpning av SIRens renoveringsprocess av Sofia Meurk, Omreda AB

    - Varsam energieffektiv renovering – Tjärna ängar Borlänge av Jonn Are Myhren, Högskolan Dalarna, Martin Bergdahl, Högskolan Dalarna

    - Sociala perspektiv på termisk komfort vid renovering av Tjärna Ängar av Annette Henning, Högskolan Dalarna, Jonn Are Myhren, Högskolan Dalarna, Maria Wallinder, Högskolan Dalarna och Linköpings universitet

    - Från omfattande till varsam renovering av Paula Femenías, Chalmers Tekniska högskola, Sara Hamon, Familjebostäder, Jospehina Wilson, Familjebostäder, Per-Henrik Hartman Familjebostäder, Kristina Mjörnell, RISE och Lunds Universitet

    - Beslutsfattande i tidiga skeden vid renovering av skolbyggnad av Karin Farsäter, Lunds Universitet, Stefan Olander, Lunds Universitet

    - Lyckad renovering av miljonprogramsområde i Munkedal  av Anna Rudhag, Rotpartner

    - Kunskapslyft renovering av Liane Thuvander, Chalmers Tekniska Högskola, Paula Femenías, Chalmers Tekniska Högskola, Fredrik Olsson, Rotpartner, Angelica Starke, Rotpartner

    - ”Örat mot marken” Kartbaserad metodik för boendeinflytande i stadsutveckling av Liane Thuvander, Chalmers Tekniska Högskola, Jenny Stenberg, Chalmers Tekniska Högskola, Alfredo Torrez, Hyresgästföreningen, Kim Weinehammar, Hyresgästföreningen, Jesper Bryngelsson, Hyresgästföreningen

    - Hyresgästsamråd vid renovering – fyra dilemman av Jenny Stenberg, Chalmers Tekniska Högskola

    - Kulturvärden och hållbar renovering av Petra Eriksson, Uppsala universitet, Campus Gotland, Anna Donarelli, Riksantikvarieämbetet, Therese Sonehag, Riksantikvarieämbetet

    - Hållbar energieffektivisering av historiska trä- och stenbyggnader med hampa-kalk av Paulien Strandberg-de Bruijn, Lunds Universitet, Kristin Balksten, Uppsala universitet Campus Gotland, Anna Donarelli, Riksantikvarieämbetet

    - Superisoleringsmaterial – hur kan de användas vid renovering? av Pär Johansson, Chalmers tekniska högskola, Petra Eriksson, Uppsala Universitet,Paula Wahlgren, Chalmers tekniska högskola

    - Kulturvärden i planeringsprocessen - kulturmiljöprogram som kunskapsunderlag av Sanja Peter, Göteborgs stad

    - Varför är det så ont om Q? av Jennie Sjöholm, Luleå Tekniska Universitet, Kristina L Nilsson, Luleå Tekniska Universitet

    - Installation av FTX – ett sätt att få lägre energianvändning och bättre innemiljö  av Dennis Johansson, Lunds Universitet, Akram Abdul Hamid, Lunds Universitet, Hans Bagge, Lunds Universitet, Jan Kristoffersson, Sustainable Innovation

    - Mäta resursförbrukning under ombyggnad  av Jan Bröchner, Chalmers Tekniska Högskola, Ahmet Anil Sezer, Chalmers Tekniska Högskola

    - Relining eller rörbyte  av Folke Björk, Kungliga Tekniska Högskolan, Parastou Kharazmi, Kungliga Tekniska Högskolan, Tord af Klintberg, Kungliga Tekniska Högskolan

    - Vad står det i lagar och regler om renovering?  av Elisabeth Helsing, RISE

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