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norskInstitutt for bygg, energi og materialteknologi: Nye registreringer
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A Study of Dynamic Wind Effects on High-Rise Building with Tube-in Tube System in Norway
(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.
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Evaluation of optimal replacement of natural aggregates by recycled concrete aggregates to achieve sufficient durability
(Conference object; Konferansebidrag, 2022)The use of recycled concrete aggregate (RCA) is one way to reduce the depletion of raw materials for the production of concrete. In this article RCA was tested and evaluated. Concrete with 25 to 80 % of RCA was examined in terms of its durability performance, particularly capillary absorption and shrinkage. Capillary absorption testing showed that RCA has better or identical results as the reference ... -
Investigating Effects of pH on Microbial Growth in Continuous Stirred Tank Bioreactors
(Conference object; Konferansebidrag, 2017) -
A Review on Emerging Cementitious Materials, Reactivity Evaluation and Treatment Methods
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-05)Alternative to traditional concrete, sustainable concrete reduces cement content, waste management issues, and CO2 emissions. To achieve sustainable concrete, waste materials can be used as supplementary cementitious materials (SCMs) to partially replace cement. Fly ash, ground-granulated blast furnace slag, and silica fume have been heavily studied as SCMs. However, due to the retirement of coal-fired ... -
Isolation and Characterisation of Electrogenic Bacteria from Mud Samples
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-17)To develop efficient microbial fuel cell systems for green energy production using different waste products, establishing characterised bacterial consortia is necessary. In this study, bacteria with electrogenic potentials were isolated from mud samples and examined to determine biofilm-formation capacities and macromolecule degradation. Matrix-assisted laser desorption/ionization time-of-flight ... -
Design basis for Arctic infrastructure facilities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-18)A discussion related to the selection of a proper design basis for Arctic infrastructure facilities is presented. The design basis, which must be sufficiently robust to ensure safe operations of the facilities during their planned lifetime, should include relevant information available from the local and indigenous people of the area. The need to properly document all data and assumptions made ... -
Bridging Law Application to Fracture of Fiber Concrete Containing Oil Shale Ash
(Journal article; Tidsskriftartikkel, 2023-07-23)Concrete is a widely used material in various industries, including hazardous waste management. At the same time, its production creates a significant carbon footprint. Therefore, intensive research is being conducted to create more eco-friendly concrete, for example, partially replacing cement with by-products such as oil shale ash (OSA) or improving properties by adding dispersed fibers such as ... -
Standardisering av informasjonsflyten i tegningsløse modellbaserte prosjekter innenfor byggetekniske fag
(Master thesis; Mastergradsoppgave, 2022-05-18)Byggebransjen utvikles kontinuerlig, både med tanke på utførelse og verktøyene som benyttes på byggeplass men også hvordan selve prosjekteringsprosessen gjennomføres. Bruken av BIM i større prosjekter blir mer og mer vanlig, men potensialet som ligger i BIM som verktøy utnyttes i mange tilfeller svært lite effektivt. Det blir i mange prosjekter produsert både modell og tegninger for å sikre ... -
Effect of Microwave Radiation on the Compressive Strength of Solid Ceramic Brick
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-13)Microwave radiation is widely utilized in construction practice, especially for drying building materials, remediating damp masonry, or sterilization of biotic pests that have infested building structures. The available scientific and technical literature reports that certain materials exposed to microwave radiation do not change their physical and mechanical properties, although this has not yet ... -
Byggteknisk droneinspeksjon
(Master thesis; Mastergradsoppgave, 2022-05-16)Hjelpemidler og utstyr i byggebransjen er i stadig endring. Muligheten for å kunne gjennomføre byggtekniske inspeksjoner på en bedre måte er på god vei, nemlig ved bruk av droner. Droneinspeksjoner har blitt mer vanlig i de siste årene, da særlig på grunn av kostnadsbesparelse og innovasjon. Tema for denne oppgaven er byggteknisk droneinspeksjon, og hvilke fordeler og ulemper er det ved bruk av ...
