Recent additions

  • Evaluering av optimal erstatning av naturlig tilslag med resirkulert betongtilslag for å oppnå tilstrekkelig bestandighet 

    Sjåfjell, Jørgen Johnsen (Master thesis; Mastergradsoppgave, 2021-05-20)
    Bygg- og anleggsindustrien er en stor bidragsyter til global oppvarming grunnet produksjon av bygningsmateriale, transport samt bygnings- og rivningsaktivitet. Materialets kretsløp og sirkulær økonomi kan drastisk redusere forurensning og etterspørselen av naturlige ressurser. Bruk av resirkulert tilslag (RCA) er en av mulighetene til hvordan en kan redusere forbruket av naturlige ressurser for ...
  • Besparelse med bruk av SD-anlegg 

    Normann, Ingjerd Pettersen (Master thesis; Mastergradsoppgave, 2021-05-14)
    Denne oppgaven er en studie av hvordan SD-anlegg kan gi besparelser i både eksisterende og nye bygg. Rapporten ser på besparelser i form av energi og andre potensielle besparelser, som hvor mye tid et SD-anlegg frigir i løpet av en arbeidsdag og organisering av ferieavvikling. Innledningsvis er det gjort en gjennomgang av teori som er relevant for oppgaven, med fokus på SD-anleggets hierarki, ...
  • Experiments With Sea Spray Icing: Investigation of Icing Rates 

    Deshpande, Sujay; Sæterdal, Ane Solbakken; Sundsbø, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-11)
    Sea spray icing on ships and marine structures depends on a complex correlation between metocean parameters and vessel characteristics. Sea spray icing rates have mostly been investigated and given as a function of general metocean parameters. The existing models suffer from the lack of experimental data. More experimental data are required for better prediction models and understanding of the icing ...
  • Experimental Investigation of Deicing with Seawater 

    Sæterdal, Ane Solbakken; Visich, Aleksandra; Deshpande, Sujay; Sundsbø, Per-Arne (Chapter; Bokkapittel, 2023-06-19)
    Increased traffic and interest in arctic regions necessitate measures to ensure the safety and functionality of vessels. Sea-spray icing is one of the significant hazards for small- and medium-sized vessels in polar waters. Ice cover can restrict access to essential parts of a vessel and compromise its stability. Existing deicing measures, such as heat or chemical application and manual ice removal, ...
  • Running out of excuses? Norwegian political and policy discourses justifying oil and gas development in the Arctic 

    Ballo, Bjørn Moen; Kristoffersen, Berit; Sidortsov, Roman (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-08)
    In this article, we analyse how energy security are woven into political discourses among Norwegian policymakers after the Russian invasion of Ukraine and the consequences of this for intergenerational justice and environmental concerns more broadly. Preceding justifications centred on state revenue and domestic economic growth, the current discourse focuses on the European need for security of ...
  • Same same, but different – or how construction informatics gets taught at universities in Norway and Sweden 

    Merschbrock, Christoph; Onstein, Erling; Danielsen, Peter E.; Johansson, Peter (Chapter; Bokkapittel, 2023)
    In response to the increasing demand for construction informatics (CI) expertise, universities in the Nordic countries have developed new educational offers. This study explores how CI related education is being delivered by three different universities, two in Norway and one in Sweden. By comparing curricula and interviewing CI teachers, this paper contributes to the recent debate on the international ...
  • Evaluating of melting-ice process in a vertical pipe with consideration of net sensible heat 

    Nguyen, Hung Thanh; Gjerløw, Eirik; Huynh, Minh-Thu T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-19)
    In ice-melting process, motion of liquid–solid interface is complicated due to moving boundary, which is also called Stefan interface problem. Although the Stefan model has been widely utilized, it frequently overestimates the melting rate. In the present study, the net-sensible-heat of the phases are taken into account as an additional physical effect to the Stefan model for one-phase case and ...
  • Enhanced performance of microbial fuel cells using electrochemically treated carbon felt anode 

    Poureshghi, Fatemeh; Calay, Rajnish K; Das, Subhashis (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-10)
    The microbial fuel cell (MFC) technology is emerging as an effective technology for wastewater treatment to remove and detect many pollutants and simultaneously generate power. The anode is an essential component for bacterial attachment and extracellular electron transfer (EET). Thus, anode performance is critical for improving an MFC system's overall performance. Materials that are electronically ...
  • Assessing shielding material Performance: Benchmarking of Monte Carlo codes for oil shale and Basalt-Boron fiber concretes Hando Tohver a,* , Andrius Slavickas b , Maryna Holiuk c , Andrejs Krasn¸ i 

    Tohver, Hando; Motlep, Riho; Krasnikovs, Andrejs; Novakova, Iveta; Gulik, Volodymyr; Slavickas, Andrius; Holiuk, Maryna; Vaišnoras, Mindaugas (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-12)
    Cement-based concretes are commonly used for managing radioactive waste due to their low cost and radiation shielding properties. However, the potential of using oil shale ash as an additive in waste packaging material has been overlooked. This study focuses on benchmarking and developing a Monte Carlo based modeling methodology using multiple transport codes (MCNP, SERPENT, SCALE, OpenMC, and ...
  • A Study of Dynamic Wind Effects on High-Rise Building with Tube-in Tube System in Norway 

    Pham, Son Hoang; Abujayyab, Abdelrahman Bassam (Master thesis; Mastergradsoppgave, 2023-05-15)
    According to a new high-rise strategy, Norway is expected to have more tall buildings. However, due to a lack of knowledge and experience in high-rise technology, the country has not built many such structures yet. To address this issue, a study was conducted to analyze the response of a high-rise building to dynamic wind load, considering the low seismic activity in the region. The study is divided ...
  • Hypotese verifisering av tilslagstype innflytelse på CMOD av fiber betong. 

    Klausen, Richard-Mathias (Master thesis; Mastergradsoppgave, 2023-05-15)
    Tilsetting av fiber i betong har vært noe som lenge har vært benyttet for å tilføre strekkegneskaper i betongen og hindre blant annet riss i betongen. Det har i de siste årene vært et ønske om å undersøke om det er forsvarlig å bruke fiber betong i bærende konstruksjoner, og ikke kun i fundamenter og sprøytebetong som fiber har normalt sett vært benyttet til. Etter publiseringen av NB.38 i 2020 har ...
  • Konseptløsning for klimaskjerming på Jernvassdammen 

    Hjallar, Ingrid Evita Antonsen (Master thesis; Mastergradsoppgave, 2023-05-15)
    Denne oppgaven har utforsket konseptet om å bygge en klimaskjerm rundt Jernvassdammen i Nord-Norge, med integrerte solcellepaneler som en del av skjermen. Motivasjonene bak dette konseptet er å skape en «vinn-vinn situasjon» der både dammens fysiske integritet og bærekraftige energiproduksjon blir fremmet. Oppgaven har evaluert tilstanden til Jernvassdammen og funnet at selv om betongkonstruksjonen ...
  • Durability of low carbon concrete verified by various curing conditions for freeze-thaw testing 

    Husby, Martin-André Stormdalshei (Master thesis; Mastergradsoppgave, 2023-05-15)
    This study investigated the feasibility of producing low carbon concrete (LCC) using supplementary cementitious materials (SCMs) and evaluated their impact on concrete F-T durability. Variations in the curing conditions were done to see the effect it had on the F-T resistance. These results were then supported by compressive- and chloride migration testing. The performance of different concrete ...
  • Evaluering Interface betingelsen, randkraver og samt frysning/melting front ved fasesendring material i hus-kompositt-veggen, basert på eksperiment temperatur data 

    Ji, Yiran (Master thesis; Mastergradsoppgave, 2023-05-14)
    Effektiv bruk energi i et hus/bygg er en drivende utvikling i byggenæring i de siste år. Det er en komplisert-omfang-og sammensatt problem for byggteknologi. For nevnt noe problemstiller, hvordan/hvilken energi kilde som elektrisk, fjernvarme, sol-, vind- som dekker huse behov og samt ha en gunstig effekt på natur, kostnad, og samfunnsforhold. Og, hvordan får vi optimal/gunstig fordeling energi i ...
  • Effect of pH, COD, and HRT on the Performance of Microbial Fuel Cell Using Synthetic Dairy Wastewater 

    Banerjee, Aritro; Calay, Rajnish K; Das, Subhashis (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-30)
    Microbial fuel cells (MFC) are emerging technologies that can produce electricity while treating wastewater. A series of tests were carried out to evaluate the efficiency of this technology for treating dairy wastewater (DWW). The experiments used Shewanella baltica as an exoelectrogen in a small single MFC to treat simulated DWW. The impacts of various operational factors, specifically pH, ...
  • Luftfuktighet i bolighus 

    Hansen, Mona (Master thesis; Mastergradsoppgave, 2023-05-14)
    Denne masteroppgaven er en litteraturstudie av luftfuktighet i bolighus, i tillegg til en case studie i bolighus knyttet til luftfuktighet ved planter. Oppgaven dekker litteraturstudie knyttet til forskning og fakta både i Norge og internasjonalt. Ifølge verdens helseorganisasjon (WHO) oppholder en person seg 90 % av tiden innendørs. Luftfuktighet er en av faktorene som er avgjørende for at inneklima ...
  • Iron ore dust as a natural pigment in concrete with RCA for artwork application 

    Novakova, Iveta; Buyle, Boy-Arne; Ørmen, Lene Baadsvig (Chapter; Bokkapittel, 2022)
    A The innovative idea of utilization of iron ore dust (IODust), characterized by red hue typical for Narvik, came up during designing artwork for The Arctic University of Norway campus Narvik. The use of waste from iron ore production as a natural pigment was completed by partial replacement of natural aggregates (NA) by recycled concrete aggregates (RCA) to achieve a higher level of material ...
  • Analysis of early-age properties of geopolymers with various waste materials 

    De Muynck, Dario; Heyndrickx, Marie-Laure (Master thesis; Mastergradsoppgave, 2023-05-14)
    As the demand for concrete increases to meet the expanding need, the environmental impact of its production cannot be ignored. The use of ordinary Portland cement (OPC) is known to deplete natural resources and release large amounts of CO2 into the atmosphere. Geopolymer concrete (GPC), made from waste and industrial by-products, has shown the potential to overcome the environmental issues associated ...
  • Analyse og optimalisering av varmesystem ved Vigør Rehabiliteringssykehus 

    Berntsen, Alexander (Master thesis; Mastergradsoppgave, 2023-05-12)
    Grunnet økningen i energipriser og økt press om å nå klimamål, har energiøkonomisering i bygg blitt et samfunnsaktuelt tema. Masteroppgaven bruker Vigør Rehabiliteringssykehus vannbårne varmeanlegg som et eksempelstudie, der formålet med oppgaven er å forenkle driften, redusere energiforbruket og kutte energikostnadene tilknyttet varmeanlegget. Siden 2000-tallet er et er gjort en rekke forsøk på å ...
  • DEVELOPMENT OF METHOD AND CRITERIA FOR EVALUATION OF DRY-WASHING EFFICIENCY WITH RE-CON ZERO EVO 

    Novakova, Iveta; Norman, Sven-Henrik; Bista, Dipen (Chapter; Bokkapittel, 2022)
    Society recognises the need for the preservation of nature and the need for better resource utilisation. Integration of good practice in the building industry is mainly targeted at reducing or completely eliminating waste. One of the waste sources in the concrete industry is created in washing facilities and consists of returned concrete, washing water and cement slurry. Concrete trucks are washed ...

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