Browsing Institutt for konstruksjonsteknikk by Title
Now showing items 1380-1399 of 2546
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Investigating the Effects of High Strength Concrete Properties on Capillary Absorption and Adhesion in Offshore Concrete Rehabilitation
(Master thesis, 2023)Ved å utforske offshore betongstrukturer, er denne masteroppgaven viet til å avdekke kompleksiteten knyttet til heft mellom reparert betong og reparasjonsmaterialer. Med spesielt fokus på egenskapene til høyfast betong, ... -
Investigation and Comparison of Methods Accounting for Asynchronous Seismic Ground Motions for Bridges
(Master thesis, 2017)Eurocode 8, part 2, presents various methods to incorporate asynchronous seismic excitation for bridges. Common practice is to use time history analyses due to their high level of accuracy; however, they are computationally ... -
Investigation of Cracking Behavior in Reinforced Concrete Panels with Bond-slip Reinforcement
(Master thesis, 2016)This thesis aims to investigate the crack pattern of two reinforced concrete panels subjected to a tensile load. Numerical models for two reinforced concrete panels were established in the finite element program DIANA10. ... -
Investigation of dynamic wind loads on a long-span suspension bridge identified from measured acceleration data
(Journal article; Peer reviewed, 2020)The traditional wind load assessment for long-span bridges relies on assumed models for the wind field and aerodynamic coefficients from wind tunnel tests, which usually introduce some uncertainties. Recent studies have ... -
Investigation of high-strength steel component subjected to stretch-bending: effect of forming history
(Journal article; Peer reviewed, 2014)The behaviour of a closed top-hat section made of Dogal 800 DP subjected to stretch-bending is studied both experimentally and numerically. The top-hat section was made by forming of a sheet using a FlexformTM fluid cell ... -
Investigation of hydrogen embrittlement behavior in X65 pipeline steel under different hydrogen charging conditions
(Journal article; Peer reviewed, 2022)The hydrogen effect on a X65 carbon steel was investigated by tensile tests under both ex-situ and in-situ hydrogen charging conditions. The fractured samples were characterized and compared using a combination of scanning ... -
Investigation of leaching in steel fiber-reinforced shotcrete exposed to fresh and saline groundwater in a subsea road tunnel
(Peer reviewed; Journal article, 2022)The field and laboratory investigations performed in the Frøya subsea road tunnel, constructed between 1998 and 2000, focus on the degree of leaching undergone by steel fiber-reinforced shotcrete in fresh and saline ... -
Investigation of mechanical properties for medium-dense hardwoods, focusing on beech, birch and oak.
(Master thesis, 2020)En undersøkelse av de mekaniske egenskapene til et utvalg hardtre av medium tetthet er blitt gjennomført. Innledningsvis er bakgrunnsteori om tre og trestrukturen presentert. Treslagene som ble undersøkt i studien var bøk ... -
Investigation of RC Structural Behaviour of Wall-Equivalent Dual System through Non-Linear Analyses. - Undersøkelse av den konstruksjonsmessige oppførselen til veggekvivalent dobbeltsystem i armert betong ved hjelp av ikke-lineære analyser
(Master thesis, 2016)The purpose of this thesis is to evaluate the non-linear response of a wall-equivalent dual-system structure. The procedure of the analyses follows the guidelines incorporated in the current Norwegian seismic design code ... -
Investigation of resistivity, porosity and pore solution composition in carbonated mortar prepared with ordinary Portland cement and Portland-fly ash cement
(Master thesis, 2018)This project investigated how carbonation affected resistivity in mortars made with different cement types. The goal was to explain this by investigating the pore solution composition, the pore structure and the moisture ... -
Investigation of the products of the dolomite reaction in Portland cement pastes
(Chapter; Peer reviewed, 2017)The formation of potentially deleterious reaction products from the reaction of dolomite fines in Portland cement pastes was investigated. It was shown that the reaction of dolomite fines did not follow the commonly accepted ... -
Investigation of thermal transport in polymer composites with percolating networks of silver thin films by the flash diffusivity method
(Journal article; Peer reviewed, 2017)The flash diffusivity method, also known as laser flash analysis (LFA), is commonly used to obtain the thermal diffusivity (α) and thermal conductivity (κ) of materials, due to its relative simplicity, rapid measurements, ... -
An Investigation on the Current Collection Quality of Railway Pantograph-catenary Systems with Contact Wire Wear Degradations
(Peer reviewed; Journal article, 2021)In railway pantograph-catenary systems, the contact surfaces undergo wear in long-term operations, directly affecting interaction performance and potentially deteriorating the current collection quality. The effect of ... -
Investigations of the long-term extreme buffeting response of long-span bridges using importance sampling Monte Carlo simulations
(Peer reviewed; Journal article, 2022)Several studies have shown that site measurements of the buffeting responses of long-span bridges do not always agree with predictions from analytical models. The observed discrepancy is believed to be explained by the ... -
Investigations on the feasibility of the CWE method to verify potential alkali release from aggregates in Norwegian field concrete
(Chapter, 2021)Concrete elements exposed for 26 years to seawater spray and deicing salts along a road close to Sandnessjøen in Norway were investigated. Concrete cores from 4 elements with different binder compositions (A: 100 % Portland ... -
Investigative Study on Method for Approximating Nonlinear Material Behavior in Reinforced Concrete Structures Subjected to Seismic Ground Motions
(Master thesis, 2019)Ikke-lineære tidsplansanalyser blir generelt ansett som den mest nøyaktige metoden for å anal- ysere responsen til konstruksjoner utsatt for seismiske laster. Dessverre er denne typen analyser svært krevende beregningsmessig, ... -
Iron speciation in blast furnace slag cements
(Peer reviewed; Journal article, 2021)Slag-containing pastes and concretes were analysed by element-specific synchrotron-based techniques to determine the speciation of iron on crushed materials through spatially resolved micro-spectroscopic studies. The ... -
Is it possible to measure the tensile strength and fracture toughness simultaneously using flattened Brazilian disk?
(Peer reviewed; Journal article, 2021)The Flattened Brazilian Disk test was designed for measuring both the tensile strength and fracture toughness of rocks. Using cohesive zone modelling, we found that the method is practically not suitable for extracting the ... -
Isogeometric analysis of finite deformation nearly incompressible solids
(Peer reviewed; Journal article, 2011)This paper addresses the use of isogeometric analysis to solve finite deformationsolid mechanics problems, in which volumetric locking may be encountered. The current workis based on the foundation developed in the project ... -
Isogeometric Finite Element Analysis based on Bézier Extraction of NURBS and T-splines
(Master thesis, 2011)This thesis will give a theoretical overview of B-splines, as well as NURBS and T-splines which are based on B-splines, and also the concept of Bézier decomposition of these spline functions. Bézier decomposition will ...