Browsing Publikasjoner fra Cristin - SINTEF Narvik by Document Types "Journal article"
Now showing items 21-35 of 35
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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 ... -
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) ... -
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 ... -
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 ... -
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 ... -
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 ... -
Tracking changes in the fjord environment over a winter season using ice bulk salinity and δ18O
(Peer reviewed; Journal article, 2023)Ice that forms in the fjords of northern Norway often undergoes temperature fluctuations, rising above and below freezing, throughout winter and experiences variable conditions at the ice-ocean interface due to changes in ... -
Tracking changes in the fjord environment over a winter season using ice bulk salinity and δ<sup>18</sup>O
(Peer reviewed; Journal article, 2023) -
Weighted Hardy Operators in Complementary Morrey Spaces
(Peer reviewed; Journal article, 2012)We study the weighted -boundedness of the multidimensional weighted Hardy-type operators and with radial type weight , in the generalized complementary Morrey spaces defined by an almost increasing function . We prove a ... -
Weighted Hardy-Type Inequalities in Variable Exponent Morrey-Type Spaces
(Peer reviewed; Journal article, 2013) -
Workflow for Off-Site Bridge Inspection Using Automatic Damage Detection-Case Study of the Pahtajokk Bridge
(Peer reviewed; Journal article, 2021)For the inspection of structures, particularly bridges, it is becoming common to replace humans with autonomous systems that use unmanned aerial vehicles (UAV). In this paper, a framework for autonomous bridge inspection ...