Browsing NTNU Open by Author "Pedersen, Bård"
Now showing items 1-11 of 11
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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)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 presents the ... -
Blanksigd og luftforurensninger - fertilitetsstudier
Solli, Ida M. Sagmo; Flatberg, Kjell I; Söderström, Lars; Bakken, Solveig; Pedersen, Bård (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 1996:1, Research report, 1996) -
A common soil temperature threshold for the upper limit of alpine grasslands in European mountains
Bürli, Sarah; Theurillat, Jean-Paul; Winkler, Manuela; Lamprecht, Andrea; Pauli, Harald; Rixen, Christian; Steinbauer, Klaus; Wipf, Sonja; Abdaladze, Otar; Andrews, Christopher; Barančok, Peter; Benito‑Alonso, José Luis; Fernández Calzado, Maria Rosa; Carranza, Maria Laura; Dick, Jan; Erschbamer, Brigitta; Ghosn, Dany; Gigaur, Khatuna; Kazakis, George; Mallaun, Martin; Michelsen, Ottar; Moiseev, Dmitry; Moiseev, Pavel; Molau, Ulf; Mesa, Joaquín Molero; di Cella, Umberto Morra; Nadeem, Imran; Nagy, Laszlo; Nicklas, Lena; Palaj, Andrej; Pedersen, Bård; Petey, Martina; Puşcaş, Mihai; Rossi, Graziano; Stanisci, Angela; Tomaselli, Marcello; Unterluggauer, Peter; Ursu, Tudor‑Mihai; Villar, Luis; Vittoz, Pascal (Journal article, 2021)While climatic research about treeline has a long history, the climatic conditions corresponding to the upper limit of closed alpine grasslands remain poorly understood. Here, we propose a climatic defnition for this limit, ... -
Filler and Water Reducer Effects on Sedimentation, Bleeding and Zeta-Potential of Cement Paste
Peng, Ya; Pedersen, Bård; Ng, Serina; De Weerdt, Klaartje; Jacobsen, Stefan (Journal article; Peer reviewed, 2018)Bleeding and sedimentation quantify the stability of fresh cement paste, whereas the addition of fillers and water reducers affect the stability. The effect of various types of fillers and water reducers was investigated ... -
Long-term effects of nutrient enrichment controlling plant species and functional composition in a boreal rich fen
Øien, Dag-Inge; Pedersen, Bård; Kozub, Łukasz; Goldstein, Klara; Wilk, Mateusz (Journal article; Peer reviewed, 2018)Questions: How does long-term increase in nutrient availability affect species composition, species diversity and functional composition in boreal rich fens, and how does this differ from short-term effects? What are the ... -
Naturindeks for Norge: Evaluering av indikatorer innen åpent lavland
Johansen, Line; Carlsen, Thomas; Hassel, Kristian; Kallioniemi, Eveliina; Staverløkk, Arnstein; Pedersen, Bård; Wehn, Sølvi (NIBIO Rapport;, Research report, 2019) -
Respiratory Virus Detection and Clinical Diagnosis in Children Attending Day Care
Moe, Nina; Pedersen, Bård; Nordbø, Svein Arne; Skanke, Lars Høsøien; Krokstad, Sidsel; Smyrnaios, Anastasios; Døllner, Henrik (Journal article; Peer reviewed, 2016)Background: Respiratory viruses often have been studied in children with respiratory tract infection (RTI), but less knowledge exists about viruses in asymptomatic children. We have studied the occurrence of a broad ... -
Rheology of matrix and SCC with different mineral fillers and admixtures
Cepuritis, Rolands; Jacobsen, Stefan; Pedersen, Bård; Vikan, Hedda Vestøl; De Weerdt, Klaartje (COIN Projet report;41-2012, Research report, 2012) -
Setting reference levels and limits for good ecological condition in terrestrial ecosystems – Insights from a case study based on the IBECA approach
Jakobsson, Simon; Töpper, Joachim Paul; Evju, Marianne; Framstad, Erik; Lyngstad, Anders; Pedersen, Bård; Sickel, Hanne; Sverdrup-Thygeson, Anne; Vandvik, Vigdis; Velle, Liv Guri; Aarrestad, Per Arild; Nybø, Signe (Peer reviewed; Journal article, 2020)Effective evidence-based nature conservation and habitat management relies on developing and refining our methodological toolbox for detecting critical ecological changes at an early stage. This requires not only optimizing ... -
The Impact of Climate Change on Recent Vegetation Changes on Dovrefjell, Norway
Michelsen, Ottar; Syverhuset, Anne Olga; Pedersen, Bård; Holten, Jarle Inge (Journal article; Peer reviewed, 2011)The ongoing climate warming has been reported to affect a broad range of organisms, and mountain ecosystems are considered to be particularly sensitive because they are limited by low temperatures. Meteorological data show ...