Your search resulted in 472 documents. Displaying 25 entries per page.
Moisture behaviour and biological durability of high performance flax fibre reinforced composites
2017 - IRG/WP 17-40803
For natural fibre composites in structural and load bearing applications long reinforcing fibres are required. Therefore, much research is performed on flax fibre reinforced composites to optimize them for high performance use. In most cases such research focuses on the mechanical properties, yet the assessment of moisture behaviour, dimensional stability and biological durability is an important ...
N Defoirdt, J Van den Bulcke, F Bensadoun, J Ivens, I Verpoest, J Van Acker
Studying Weathering Performance of Coatings on Thermally Modified Wood
2017 - IRG/WP 17-40805
Thermal modification and degree of improved properties depends on wood species and treatment parameters. Southern pine and spruce are the two common wood species for decking, fences and siding in North America. This study was the first to evaluate coating performance when applied on oil-heat-treated southern pine and spruce wood samples. Water uptake, colour and gloss changes of samples were analy...
M Nejad, M Dadbin, P Cooper
Durability of energy efficient wooden buildings: a building physical point of view
2017 - IRG/WP 17-40812
The drive for more energy efficient and sustainable buildings resulted in an increased popularity of wooden buildings, even in countries with a masonry tradition. Often guidelines and prescriptions then are copied from other countries. Different climatic boundary conditions and tradition of finishing, though, do require different moisture tolerance criteria. This is clearly the case for water vapo...
S Roels, J Langmans
Water absorption characteristics of CLT
2017 - IRG/WP 17-40817
CLT is initialism of Cross Laminated Timber. CLT is generally large-sized panel which can use many woods efficiently, so it is attracted attention recently in Japan. Therefore, many studies about CLT are carried out. However, there are few studies about durability of CLT. Avoiding water infiltration is important for durability of wooden building. CLT has many edge-glued points which has risk of w...
D Yokoi, H Ishiyama, Y Hirano
Influence of sea water on timber and metal joints
2017 - IRG/WP 17-40818
In the Great East Japan Earthquake that occurred in March 2011, many buildings suffered from seawater immersion caused by the tsunami. Saito's study revealed that corrosion progresses on metal plate that experienced seawater immersion 1). However, the detailed mechanism of corrosion progresses has not yet been clarified. Therefore, in this study, salinity which is one of causes of corrosion w...
T Nishimura, H Ishiyama, F Hirose, N Wada
Mechanical, Physical and Biological Properties of Sandwich Biocomposites Panels manufactured from Food Packaging Waste
2017 - IRG/WP 17-40791
Recently, recycling of Tetra Pak® packaging material has attracted many attention, particularly in composite industries. In this work, novel biocomposites sandwich structures were manufactured using TetraPak waste materials as core component and various kind of natural and artificial woven fabrics as skin elements. Mechanical, physical and biological performances of the developed composite panels...
A S O Mohareb, A H Hassanin, K Candelier, M F Thévenon, A Kilic, Z Candan
Building with wood in the Arctic
2018 - IRG/WP 18-50335
During the last five years there has been a significant increase in interest in Canada in the Arctic, with research on the Franklin exploration of the mid19th century searching for the North West Passage, which coupled with the impact of Global warming on the loss of sea ice has rendered the North West Passage now navigable during the summer months. Building with wood in the Arctic has proved extr...
J N R Ruddick
Colour changes in unpainted wooden façades – Fifty Shades of Grey
2018 - IRG/WP 18-10903
In Norway the use of weathered unpainted, wooden façades has increased in popularity the last 20 years, both in single family houses as well as in multi-story and non-residential buildings. The benefit of using unpainted wood as façade material can be several: low maintenance costs, low environmental impact and low carbon footprint as well as contemporary and trendy aesthetic appearance.
The va...
K Zimmer, L R Gobakken, O Flindall, M Nygaard
In-service performance of wood claddings and windows – a Norwegian survey
2018 - IRG/WP 18-20632
The overall aim of the study was to strengthen the empirical data on decay frequency and in-service performance of claddings and windows in Norway. Data from a survey of claddings and windows from 38 Norwegian houses is presented. The main findings for wooden claddings: 1) predominance of decay was detected in east facing claddings, while the largest decayed areas were located on south facing clad...
L Ross Gobakken, G Alfredsen
Transfer of research results on the performance of wood and wood-based composites in outdoor applications into praxis
2018 - IRG/WP 18-20634
Forest-based industries have the potential to become an engine for a sustainable and competitive bioeconomy in Danube region. To reach this goal FORESDA projects was proposed. Main aim of respective project is transforming the traditional forest-based areas into innovative, modern and sustainable manufacturing areas; develop innovation-friendly ecosystems aiming to significantly improving and reco...
B Lesar, J Gričar, D Kržišnik, M Humar
Protocol of intervention against subterrranean termites in urban areas
2018 - RG/WP 18-20640
Subterranean termites are a problem of Mediterranean countries since their climatology favours their development. In Spain, termite attack is very important in cultural heritage and even in new construction, as they can cause serious damage to structural elements (pillars, beams, decks, etc.), carpentry (doors, windows, etc.) and wooden goods (furniture, paintings, libraries, etc.), causing not on...
J Galván, D Lorenzo, C Villagrá, L Robertson, R Viñambres, M T Troya
Material Resistance and Chemical Composition of Italian Stone Pine (Pinus pinea)
2018 - RG/WP 18-20645
Relevant properties of stone pine (Pinus pinea) wood have been only fragmentarily addressed in the past, which has been recognized as a limiting factor for its potential applications. The amount of the respective wood species on the market will likely increase in the future. The sorption properties, permeability to water, extractives content and durability against fungi of Pinus pinea sapwood and ...
M Humar, M De Angelis, M Romagnoli, V Vek, I Poljanšek, P Oven, N Thaler, B Lesar, D Kržišnik
Performance of acetylated wood in aquatic applications
2018 - IRG/WP 18-40822
Acetylation of wood to enhance its resistance against wood decaying fungi and insects has been studied extensively under both laboratory and terrestrial field trials. Also several studies are investigating the performance of acetylated wood in marine and fresh water exposures. This paper updates nine year marine tests with acetylated radiata pine in Hejlsminde (Denmark) and presents data on 3 year...
F Bongers, S Palanti, A Gellerich, J J Morrell, J Creemers, J Hague
Long-term performance of DMDHEU-treated wood exposed in ground, above ground and in the marine environment
2018 - IRG/WP 18-40825
Chemical wood modification with N-methylol compounds such as 1.3-dimethylol-4.5-dihydroxyethyleneurea (DMDHEU) has been studied intensively since the 1990s. Research of the past years focused on treatment of Scots pine (Pinus sylvestris L.) and European beech wood (Fagus sylvatica L.) and was shown to be applicable to improve specific material properties. A high resistance against wood-destroying ...
L Emmerich, H Militz, C Brischke
Enhancing service life performance of oak decking and cladding using organosilicon treatments
2018 - IRG/WP 18-40838
The Life+ project SILEX, in full “Improving sustainability of construction materials using innovative Silicon based treatment” started in April 2013 and was finalized mid 2017. The aim of this project was to demonstrate that a new class of compounds can be used for wood treatment for an extended service life combined with enhanced new testing methodology. Ultimately, it was the intention to de...
J Van Acker, J Van den Bulcke, J-P Lecomte
Performance of wood exterior structures above ground in Spain built with softwood species. The situation case of a shelter bridge
2018 - IRG/WP 18-40844
Across Europe is very common to find wood exterior structures build in sawn and glue-laminated wood. Most of these exterior wood structures use softwood wood species such as: fir, spruce, larch and pine. In Spain exterior wood structures, became more and more popular since nineties, when sawn and glue-laminated wood were utilized for building exterior wood structures in overall Spain. This paper s...
D Lorenzo, M Touza, J Fernández-Golfín, A Lozano, J Benito
Preventivephysical barriers against subterranean termites species for building protection: How to implement innovative materials to reach efficacy requirements
2018 - IRG/WP 18-40845
As the European regulation dealing with the use of biocides (BPR) for preventive protection of buildings against subterranean termites is leading to more and more pressure on physico-chemical barriers currently used (PT18), some existing developments are focusing attention on physical biocides-free barriers. The main target is then to avoid the use of active ingredients, to stay out of the BPR sco...
N Delourme-Fonseca, P Poveda, F Simon
Developments within COST Action FP1303 related to the modification of wood
2018 - IRG/WP 18-40847
COST Action FP 1303 (Performance of bio-based building materials) was established in 2013 with the main aim to improve the knowledge on the performance of bio-based materials used as building products and the assessment of factors influencing these, with the aim of increasing their service life. This Action has helped in understanding the interlinked relationships between durability, product aesth...
D Jones
Long service life or cascading? The environmental impact of maintenance of wood-based materials for building envelope and their recycling options
2018 - IRG/WP 18-50336
A major restraint in choosing bio-based materials (i.e. wood-based) for external use, is the lack of confidence that architects, designers and customers have toward these materials. In particular, the limit state of bio-based materials, which defines the frequency of maintenance operations, might be reached earlier for wood than for other materials (i.e. concrete). On the other hand, resource and ...
M Petrillo, J Sandak, P Grossi, A Kutnar, A
Enhancing knowledge transfer in the wood protection sector
2018 - IRG/WP 18-50338
In order to meet the needs for the developing bio-based economy, maintaining and expanding the market potential for wood raw materials and wood products in indoor and outdoor construction uses remains a key activity for industries in the biotechnological and forestry sector respectively. A major restraint in this respect is the drastically deviating views and expectations on quality and performanc...
C Brischke, G Alfredsen, S Bollmus, M Humar, D Jones, L Meyer-Veltrup, L Nunes
Performance of untreated timbers in above ground decking tests: Preliminary results from an international collaborative trial
2019 - IRG/WP 19-10940
The ability to accurately predict wood decay risks under varying environmental conditions has long been of interest to timber users. Accurate predictions are difficult owing to the myriad of variables associated with the decay process including wood species, wood inhabiting organisms, timber building element design and environmental conditions. Despite these difficulties, decay predictions have be...
L P Francis, J Norton, E Melcher, A H H Wong, J Kok Lai, M Klamer, M J Konkler, J J. Morrell
Study on “Washing” used in Traditional Wooden Building in Japan -Survey in KawaraMachi Area, Gifu Prefecture
2019 - IRG/WP 19-10948
This study is about the actual method of Japanese lattice washing on the traditional buildings of KawaraMachi area, based on interview survey. KawaraMachi area is located on the river side of the Nagaragawa River, so since long years ago it flourished as a center of economic activities, by river transportation. Many wooden buildings influenced by these backgrounds exist in the city. These streets ...
K Tanaka, H Ishiyama
Comparative performance of wood/wood-based claddings predicted by four hygrothermal simulation tools
2019 - IRG/WP 19-20646
A number of hygrothermal numerical simulation packages are available, either wholly or partially dedicated to heat, air and moisture transfer simulations of building materials and wall assemblies. The objective of this work was to compare the hygrothermal responses and the moisture performance of western red cedar and composite wood claddings of a wood frame wall as predicted by four hygrothermal ...
M Defo, M Lacasse, A Laouadi
Performance of wood decking after 5 years of exposure: verification of the combined effect of wetting ability and durability
2019 - IRG/WP 19-20647
Wood is one of the most important construction materials and its use in building applications has further expanded in recent decades. In order to enable even more extensive and reliable use of wood, factors affecting wood’s service life need to be understood. More recently, a new concept to characterize the durability of wood-based materials and to predict the service lives of wood was proposed,...
M Humar, D Krzisnik, B Lesar, C Brischke
Durability by design – a case study of the performance of wooden decks after 9.5 years of natural weathering
2019 - IRG/WP 19-20648
The service life expected for wood decking manufactured with poorly durable wood species, left untreated and exposed to severe environmental conditions such as high humidity and active biological agents, is usually assumed to be short (less than 10 years). The current classification of wood’s natural durability is based on EN standardised tests which do not fully reflect the real end-use conditi...
M Kutnik, M Montibus