Browsing NTNU Open by Author "Hovde, Per Jostein"
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Accelerated climate aging of building materials and their characterization by Fourier transform infrared radiation analysis
Jelle, Bjørn Petter; Nilsen, Tom-Nils; Hovde, Per Jostein; Gustavsen, Arild (Journal article; Peer reviewed, 2012)Building materials and their durability and aging are essential to the performance of buildings and their building physical aspects over time. Accelerated climate aging investigations are carried out in order to study the ... -
Coated Wooden Claddings and the Influence of Nanoparticles on the Weathering Performance
Fufa, Selamawit Mamo; Jelle, Bjørn Petter; Hovde, Per Jostein; Rørvik, Per Martin (Journal article; Peer reviewed, 2012)Accelerated climate aging experiments and cup measurements have been performed to investigate the effect of adding TiO2 nanoparticles and nanoclay to acrylic stain coatings against the influence of weathering. The coated ... -
Durability, Reaction to Fire Properties and Environmental Impact of Treated and Untreated Wooden Claddings
Fufa, Selamawit Mamo; Jelle, Bjørn Petter; Hovde, Per Jostein (Journal article; Peer reviewed, 2013)This work summarizes the output of durability, reaction to fire properties, and environmental impact of wooden claddings subjected to treatments modified with TiO2 and clay nanoparticles. The objective was to investigate ... -
Effects of TiO2 and Clay Nanoparticles Loading on Weathering Performance of Coated Wood
Fufa, Selamawit Mamo; Jelle, Bjørn Petter; Hovde, Per Jostein (Journal article; Peer reviewed, 2013)The weathering performance of Norway spruce coated with acrylic water based paint mixed with TiO2 and clay nanoparticles were investigated. Uncoated specimens and specimens coated with unmodified paint were used as references. ... -
Fourier Transform Infrared Radiation Spectroscopy Applied for Wood Rot Decay and Mould Fungi Growth Detection
Jelle, Bjørn Petter; Hovde, Per Jostein (Journal article; Peer reviewed, 2012)Material characterization may be carried out by the attenuated total reflectance (ATR) Fourier transform infrared (FTIR) radiation spectroscopical technique, which represents a powerful experimental tool. The ATR technique ... -
Impregnated Wooden Claddings and the Influence of Nanoparticles on the Weathering Performance
Fufa, Selamawit Mamo; Jelle, Bjørn Petter; Hovde, Per Jostein; Rørvik, Per Martin (Journal article; Peer reviewed, 2012)This work was an investigation of the effect of nanoparticles on the durability of wood specimens exposed to artificial weathering. TiO2 and clay nanoparticles were mixed with preservative (Wolmanit CX-8) for improving the ... -
Investigations of Accelerated Climate Aged Wood Substrates by Fourier Transform Infrared Radiation Material Characterization
Jelle, Bjørn Petter; Rüther, Petra; Hovde, Per Jostein (Journal article; Peer reviewed, 2012)Fourier transform infrared (FTIR) material characterization by applying the attenuated total reflectance (ATR) experimental technique represents a powerful measurement tool. The ATR technique may be applied on both solid ... -
Reaction to Fire and Water Vapour Resistance Performance of Treated Wood Specimens Containing TiO2 and Clay Nanoparticles
Fufa, Selamawit Mamo; Steen-Hansen, Anne Elise; Jelle, Bjørn Petter; Hovde, Per Jostein (Journal article; Peer reviewed, 2014)The effect of TiO2 and/or clay nanoparticles on water vapour permeability and the reaction to fire performance of coated and impregnated spruce wood were studied. Water vapour permeability properties were used to assess ... -
Studies of Wooden Cladding Materials Degradation by Spectroscopy
Gupta, Barun Shankar; Jelle, Bjørn Petter; Hovde, Per Jostein; Rüther, Petra (Journal article; Peer reviewed, 2011)Claddings or facades are the outer part of building envelopes. In this study, wooden claddings are exposed to natural and accelerated weathering. The natural climate exposure was performed at a field test site located in ... -
Weathering Performance of Spruce Coated with Water Based Acrylic Paint Modified with TiO2 and Clay Nanoparticles
Fufa, Selamawit Mamo; Jelle, Bjørn Petter; Hovde, Per Jostein (Journal article; Peer reviewed, 2013)This work examines the effect of wood specimens coated with water based acrylic coatings modified with TiO2 and clay nanoparticles against weathering strain. The long-term durability of the specimens towards climate strain ... -
Wood coating failures against natural and accelerated climates
Gupta, Barun Shankar; Jelle, Bjørn Petter; Hovde, Per Jostein; Gao, Tao (Journal article; Peer reviewed, 2015)Monitoring, assessment and prediction of service life of materials are a serious challenge for the building and construction sector. According to ISO 15686 (2008), laboratory testing must be performed alongside field testing ...