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Blar i SINTEF Open på forfatter "Justnes, Harald"

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    • Acid Activation of Natural Rocks - A Case Study with Norwegian Anorthosite and Phosphoric Acid 

      Danner, Tobias; Justnes, Harald (SINTEF; 2021:00335, Research report, 2021)
      Norway is rich in natural resources, especially different types of rocks that could potentially serve as raw material for alternative binder concepts like alkali activated binders or magnesium phosphate and magnesium hydroxy ...
    • Alkali-reduced Bauxite Residue as Novel SCM 

      Danner, Tobias; Sletnes, Malin; Justnes, Harald (Peer reviewed; Journal article, 2020)
      Bauxite residue is a major waste stream available in large volumes globally that can cause risks to the surrounding environment (e.g. ecotoxicity) when disposed and stored by conventional methods. There is yet no large-scale ...
    • Alkali-silica reaction (ASR)-performance testing: Influence of specimen pre-treatment, exposure conditions and prism size on alkali leaching and prism expansion 

      Lindgård, Jan; Thomas, Michael D.A.; Sellevold, Erik Johan; Pedersen, Bård; Andiç-Çakır, Özge; Justnes, Harald; Rønning, Terje F. (Journal article; Peer reviewed, 2013)
      Whether or not concrete prism tests developed for assessment of alkali-silica reactivity of aggregates might be suitable for general ASR performance testing of concrete has been evaluated. This paper discusses how variations ...
    • Alkali–silica reaction (ASR)—performance testing: Influence of specimen pre-treatment, exposure conditions and prism size on concrete porosity, moisture state and transport properties 

      Lindgård, Jan; Sellevold, Erik Johan; Thomas, Michael D.A.; Pedersen, Bård; Justnes, Harald; Rønning, Terje F. (Journal article; Peer reviewed, 2013)
      Abstract Whether or not concrete prism tests (CPTs) developed for assessment of alkali-silica reactivity of aggregates might be suitable for general ASR performance testing of concrete has been evaluated. This paper ...
    • Alternative binders based on lime and calcined clay 

      Østnor, Tone Anita; Justnes, Harald (COIN Project report;68, Research report, 2015)
      Alternative binders are in this report defined as binders without Portland cement. In this particular project it will be based on calcined clay or fly ash as a source of reactive silica and alumina in combination with lime ...
    • Aske fra energigjenvinning kan erstatte sement 

      Engelsen, Christian John; Døssland, Line Teigen; Danner, Tobias; Justnes, Harald; Heyn, Richard H. (Journal article, 2022)
      t forskningsprosjekt fra SINTEF viser at aske fra forbrenningsanlegget på Haraldrud har gode egenskaper som sementerstatter. Resultatene åpner for økt sirkulær økonomi i byggenæringen.
    • Bauxite Residue as Supplementary Cementitious Material – Efforts to Reduce the Amount of Soluble Sodium 

      Danner, Tobias; Justnes, Harald (Peer reviewed; Journal article, 2020)
      This study investigates the feasibility of using bauxite residue (BR) as supplementary cementitious material (SCM) for the cement and concrete industry. It is shown from pastes of BR and calcium hydroxide, that BR is highly ...
    • Betong i bygninger - konsekvenser for inneklima. Forprosjekt 

      Blom, Peter; Justnes, Harald; Levy, Finn (Prosjektrapport (Norges Byggforskningsinstitutt);193, Research report, 1996)
    • Calcareous smectite clay as a pozzolanic alternative to kaolin 

      Danner, Tobias; Norden, Geir; Justnes, Harald (Journal article; Peer reviewed, 2019)
      The hydration of cement pastes with addition of a kaolinite rich clay (Clay A) and a calcareous smectite rich clay (Clay B) was investigated with isothermal calorimetry, in-situ XRD, PXRD, TGA and EPMA. Portland cement was ...
    • Changes in the phase assemblage of concrete exposed to sea water 

      De Weerdt, Klaartje; Justnes, Harald; Geiker, Mette Rica (Journal article; Peer reviewed, 2014)
      In the present study the phase changes in an ordinary concrete standing for 10 years in a tidal zone were investigated with a range of techniques. From the exposed surface and inwards different zones had formed. SEM–EDS ...
    • Characterisation of calcined raw clays suitable as supplementary cementitious materials 

      Danner, Tobias; Norden, Geir; Justnes, Harald (Journal article; Peer reviewed, 2018)
      The potential use of two raw clays (Clay A: kaolin; Clay B: calcareous montmorillonite) as supplementary cementitious material (SCM) in blended cements was investigated. Cement replacement in mortars by 20% calcined Clay ...
    • Characterisation of calcined raw clays suitable as supplementary cementitious materials 

      Danner, Tobias; Norden, Geir; Justnes, Harald (Journal article; Peer reviewed, 2018)
      The potential use of two raw clays (Clay A: kaolin; Clay B: calcareous montmorillonite) as supplementary cementitious material (SCM) in blended cements was investigated. Cement replacement in mortars by 20% calcined Clay ...
    • Characterization of cement types used for rock injection 

      Skjølsvold, Ola; Justnes, Harald (Conference object; Peer reviewed, 2016)
      This paper is a part of the research project “True Improvement in Grouting High pressure Technology for tunneling (TIGHT)" financed by the Research Council of Norway (project no. 236676/O30), in cooperation with Statens ...
    • Characterization of cements for injection 

      Justnes, Harald; Skjølsvold, Ola (Chapter, 2017)
      The three most common cement s for rock injection in Norway were characterized in terms of grout flow properties, stability and initial set for w/c = 1.2, 1.0, 0.8 and 0.6 at 8 and 20°C. The fineness was characterized by ...
    • Durability of mortar with calcined marl as pozzolan 2 year results : FA 1 Environmentally friendly concrete structures : SP 1.1 Binders with low emission and reduced consumption 

      Østnor, Tone Anita; Justnes, Harald (COIN Project report;50, Research report, 2014)
    • Durability of mortar with calcined marl as pozzolan : FA 1 Environmentally friendly concrete : SP 1.1 Low carbon-footprint binder systems 

      Østnor, Tone Anita; Justnes, Harald (COIN Project report;49, Research report, 2013)
    • Durable Aluminium Reinforced Environmentally-friendly Concrete Construction – DARE2C 

      Justnes, Harald (Journal article; Peer reviewed, 2017)
      A new concept is described for low pH concrete that can allow reinforcement with aluminium metal rods or fibres. In regular concrete the high pH will after short while lead to substantial amounts of hydrogen gas evolution. ...
    • Effect of Calcium Nitrate on the Properties of Portland– Limestone Cement‐Based Concrete Cured at Low Temperature 

      Skripkiūnas, Gintautas; Kičaitė, Asta; Justnes, Harald; Pundienė, Ina (Peer reviewed; Journal article, 2021)
      The effect of calcium nitrate (CN) dosages from 0 to 3% (of cement mass) on the properties of fresh cement paste rheology and hardening processes and on the strength of hardened concrete with two types of limestone-blended ...
    • Effect of leaching on the composition of hydration phases during chloride exposure of mortar 

      Machner, Alisa; Bjørndal, Marie Helene; Justnes, Harald; Hanžič, Lucija; Šajna, Aljoša; Gu, Yushan; Benoît, Bary; Ben Haha, Mohsen; Geiker, Mette Rica; De Weerdt, Klaartje (Peer reviewed; Journal article, 2022)
      Mortar specimens were exposed to either a 3% NaCl solution or a 3% NaCl+KOH solution for up to 180 days. Exposure to the NaCl solution provoked much more leaching than the NaCl+KOH exposure. Leaching strongly impacted the ...
    • Environmentally Sound Management of Hazardous and Industrial Wastes in Cement Kilns - Waste as Alternative Raw Materials 

      Justnes, Harald; Engelsen, Christian John (SINTEF report;SBF IN A07322, Research report, 2007)

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