Blar i Publikasjoner fra Cristin - SINTEF Narvik på tittel
Viser treff 30-49 av 57
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Large-scale shear test of brash ice
(Peer reviewed; Journal article, 2022)A large-scale shear apparatus has been originally developed and built to test the mechanical properties of coarsegrained material. It was used to evaluate the shear behaviour of brash ice. The brash ice blocks were collected ... -
Low-temperature (-10 °C) curing of Portland cement paste – synergetic effects of 1 chloride-free antifreeze admixture C-S-H seeds, and room-temperature pre-curing
(Peer reviewed; Journal article, 2021)Cold weather drastically shortens the construction season in northern regions. Low ambient temperatures are known to have detrimental impacts on the reactivity and hardened performance of cementitious materials. This study ... -
Mechanical and durability properties of concrete subjected to early-age freeze–thaw cycles
(Peer reviewed; Journal article, 2021)Early-age frost damage to concrete used in winter construction or in cold environments negatively affects the development of the hydration process and the performance of the concrete, thereby reducing the service life of ... -
Methods for prediction of thermally-induced ice loads on dams and hydro-electrical structures
(Norut Narvik Report;19/2019, Research report, 2019) -
Microbial Community Dynamics during Biodegradation of Crude Oil and Its Response to Biostimulation in Svalbard Seawater at Low Temperature
(Peer reviewed; Journal article, 2021)The development of oil exploration activities and an increase in shipping in Arctic areas have increased the risk of oil spills in this cold marine environment. The objective of this experimental study was to assess the ... -
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis
(Peer reviewed; Journal article, 2021)We analysed the three-dimensional microstructure of sea ice by means of X-ray-micro computed tomography. Microscopic (brine- and air- pore sizes, numbers and connectivity) and macroscopic (salinity, density, porosity) ... -
Non-destructive testing of prestressed concrete bridges - Experiments from field test
(Chapter, 2022)Most of the structures in the transport infrastructure are built of reinforced concrete, and many of our large bridges are built of prestressed concrete. A large part of these were built before 1980, and could theoretically ... -
Numerical analysis of ice loads on Taraldsvikfossen dam
(Chapter, 2020)Static ice loads (ice actions) are a key design parameter for dams in cold climates. Since 2012,ice stresses have been measured at Taraldsvikfossen reservoir located in Narvik, Norway. Similar to earlier observations in ... -
Numerical prediction of ice rubble field loads on the Norströmsgrund lighthouse using cohesive element formulation
(Peer reviewed; Journal article, 2021)An attempt has been made to predict the ice rubble field load on Norströmsgrund lighthouse by using Cohesive Element (CE) formulation. Two sub-load events were selected to validate the numerical and material model used in ... -
Physical and mechanical properties of ice from a refrozen ship channel ice in Bay of Bothnia
(Chapter, 2020)Winter navigation in the North Sea is expanding with respect to vessel size and traffic volume. Icebreakers create routes for ice-going vessels by breaking the level ice cover. Repeated vessel passages in the fairways and ... -
Post-peak behavior of concrete dams based on nonlinear finite element analyses
(Peer reviewed; Journal article, 2021)Dam failures are catastrophic events and in order to improve safety, engineers must have good tools for analysis and an understanding of the failure process. Since there are few cases of real failures in concrete dams, ... -
Prediction of Strain in Embedded Rebars for RC Member, Application of Hybrid Learning Approach
(Peer reviewed; Journal article, 2023)The aim of this study was to find strains in embedded reinforcement by monitoring surface deformations. Compared with analytical methods, application of the machine learning regression technique imparts a noteworthy reduction ... -
Probabilistic finite element analysis of failures in concrete dams with large asperities in the rock–concrete interface
(Peer reviewed; Journal article, 2023)Common analytical assessment methods for concrete dams are unlikely to predict material fracture in the dam body because of the assumption of rigid body behavior and uniform- or linear stress distribution along a predetermined ... -
Reduksjon av smeltevann fra fisketransport
(Nofima rapportserie, Research report, 2023)Undersøkelser i prosjektet viser at det er store forskjeller mellom de ulike aktørene i bransjen med tanke på temperaturkontroll av fisk. Hovedutfordringen med avrenning ligger nok hos produsentene, der fisken generelt ... -
Redusere avrenning fra ferskfisk transport på lastebiler
(Lecture, 2022)By law, fresh fish is transported on ice in the EEA. This system is tried and proven and works perfectly except that upward of 1000 L of meltwater drain onto the road from a typical trailer load. This is most noticeable ... -
Remote bridge inspection using optical methods
(Chapter, 2022)Routine bridge inspections usually consist of visual observations. These inspections are time-consuming and subjective. There is a need to identify new inspection techniques for infrastructure that reduce traffic disturbance, ... -
Semi‑autonomous inspection for concrete structures using digital models and a hybrid approach based on deep learning and photogrammetry
(Peer reviewed; Journal article, 2023)Bridge inspections are relied heavily on visual inspection, and usually conducted within limited time windows, typically at night, to minimize their impact on traffic. This makes it difficult to inspect every meter of the ... -
Shewanella baltica in a Microbial Fuel Cell for Sensing of Biological Oxygen Demand (BOD) of Wastewater
(Peer reviewed; Journal article, 2024) -
Simulation of brash ice behaviour in the Gulf of Bothnia using Smoothed Particle 1 Hydrodynamics formulation
(Peer reviewed; Journal article, 2021)The repeated passage of ships through ice-infested waters create a field of broken ice pieces. The typical size of the broken ice pieces is generally <2.0 m. This area might be referred to as a brash ice field. The movement ...