Your search resulted in 298 documents. Displaying 25 entries per page.
Review on protection of timber bridges in Norway and other countries
2017 - IRG/WP 17-40809
Wood plays a major role in design and construction of modern bridges in Norway. Typical elements of those bridges are double impregnated glued laminated members, stress laminated timber decks, slotted-in steel plates, metal cladding of the surfaces of loadbearing members, and cross girders made of steel. Selected examples of timber bridges in Norway are presented. This review paper gives an overvi...
K-C Mahnert, U Hundhausen
Functional silicones used for wood protection: preliminary study
2017 - IRG/WP 17-30720
Due to worldwide regulation the wood preservation domain is constantly changing. Silicones are used for different industrial applications as hydrophobic agents. This property could enable to reduce water uptake of wood treated with these compounds. Treated wood could then be less prone to dimensional variation and fungal attack, those parameters being driven by variations in wood’s moisture cont...
C Reynaud, F Marchal, F Pochon, M Kutnik
UV-curable coatings developed for aesthetic and biological protection of wood outdoors
2017 - IRG/WP 17-40821
To avoid wood greying, dimensional variations, and degradation by biological agents wood is protected with preservation products and coatings when used outdoors. For some wood species used for cladding, a treatment with a preservation product is required, and is frequently additionally protected with a coating. In this study, Mäder Group developed a new UV-curable coating for outdoors application...
C Reynaud, A S Schuller, M Kutnik, L Podgorski
Biocontrol of wood decay insects and nematodes as an alternative to traditional chemical treatments
2018 - IRG/WP 18-10914
The protection of wood has been defined until relatively recently, as the application of a chemical to increase its durability. On the other hand, society is becoming more and more demanding in terms of the use of products which have the minimum ecological impact. This has led many countries to reduce the list of biocidal products that can be used (European Biocides Regulation), therefore it is ne...
L Robertson, J F Galván, F Llinares, R Viñambres, M T de Troya
Liquefied wood polyols: Ecofriendly bio-based preservative for sustainable protection of wood from Termite attack
2018 - IRG/WP 18-10916
The major problems encountered in both indoor and outdoor utilization of wood are biological decay due to termite. The modification of wood with liquefied wood polyols has been found to be effective against termite attack. The liquefaction of wood aims to utilize woody wastes which are being generated during primary and secondary processing of wood in wood based industry. One of promising approach...
A Kumar, A John, T S Mehra, A K Pandey, S Singh Chauhan
Hibernation or spring awakening? – The research on wood durability and protection in marine environment
2018 - IRG/WP 18-10929
Wooden structures in marine applications are exposed to severe degradation conditions caused by mechanical loads and wood degrading organisms. The present paper presents the use of wood in marine environments in Europe from a wood protection perspective and gives an overview over relevant research topics. It compiles the most relevant literature with an emphasis on new wood protection methods and ...
A Treu, K Zimmer, C Brischke, E Larnøy, L R Gobakken, F Aloui, S M Cragg, P-O Flæte, M Humar, M Westin
Superior kempas hardwood protection with two proprietary microemulsion termiticdes based on permethrin and cyermethrin against Coptotermes termite attack under H2 an H3 weathered conditions found in buildings
2018 - IRG/WP 18-10931
SARPECO® and AXIL® solutions are water-based wood preservatives approved for dipping treatment providing 25 years of termite protection for solid wood and wood-based products in Europe and for more than 10 years in Indonesia. SARPECO® and AXIL® solutions are patented formulations based on concentrated microemulsions (ME) diluted with water as a dipping treatment but also for vacuum pressure tr...
D Messaudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Liquefied wood polyols: a bio-based preservative for protection of wood from fungal decay
2018 - IRG/WP 18-30725
The liquefaction of wood is one of promising approaches in utilization of woody waste which is generated during primary and secondary processing of wood and liquefied wood having various application including bio-based preservatives. The biological degradation of wood due to fungi is the major problem encountered in indoor and outdoor utilization of wood. In this study, woody waste recovered from ...
A Kumar, G Vijaylakshmi, S Singh Chauhan
Effects of wood protecting biofinish and linseed oil on fire behaviour and leachability of the fire retardant
2018 - IRG/WP 18-30728
A wood protecting biofinish is based on a protective and decorative fungal-based coating and a linseed oil impregnation (called Xyhlo biofinish). This biofinish enables the long-term use of wood in outdoor applications without using toxic chemicals.
The fire resistant properties of materials used in buildings are very important. Since Xyhlo biofinish is relatively new, only little information is ...
S Rensink, E J van Niewenhuijzen, M F Sailer
Recent findings clarifying the mechanism of brown-rot decay protection in acetylated wood
2018 - IRG/WP 18-40827
This paper summarizes the findings obtained during my PhD research over the past three years. The results provide insights which help to understand the enhanced brown-rot decay resistance of acetylated wood with particular emphasis on the role of water. The protection acetylation provides is derived from moisture exclusion within the acetylated cell wall, but the exact mechanism by which water is ...
G Beck
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
Polyesterification of wood using sorbitol and citric acid under aqueous conditions
2018 - IRG/WP 18-40851
The aim of this research is to determine if the polyesterification of sorbitol and citric acid in wood has a future potential as a wood modification process. Pine wood was impregnated with an aqueous solution containing citric acid and sorbitol and was thereafter cured at 103, or 140°C for 18 hours. The dimensional stability and leaching resistance were studied for both modification temperatures....
E Larnøy, A Karaca, L R Gobakken, C A S Hill
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
Environmental protection and long term in-service sustainability of preserved wooden poles is secured by non-toxic barrier protection system – History and case studies in South Africa
2018 - IRG/WP 18-50340
Non-toxic flexible sheeting systems have been developed to encapsulate the ground contact regions of preserved wooden poles and prevent their premature failure in South Africa since 1992 but the technology also has a long history of resistance by individuals with vested interests in the built-in redundancies of such poles. The concept has, however, been simultaneously validated by many independent...
A A W Baecker
Chemical defense of trees and wood natural durability: from protection to valorization
2019 - IRG/WP 19-10943
Natural durability of wood is defined as “the inherent resistance of wood against various wood-destroying organisms” (European standard EN 350-1). This property is due in particular to heartwood extractives. However, the wood natural durability is included in a wider defense system, and other organs such as bark and roots also host protective compounds. Studying the mechanisms on which global ...
E Houel, D Stien, N Amusant
COPPER NAPHTHENATE: A Product for All Seasons: Protecting the Americas’ Infrastructure for Over 100 Years and Potential for Expanded Usage in Europe
2019 - IRG/WP 19-30738
This paper is a brief review of the history and use of the wood preservative Copper Naphthenate, with a focus on use patterns within the USA and opportunities for expansion in Europe and Canada. This paper reviews how copper naphthenate has performed to preserve and protect cellulosic and wooden items essential to critical infrastructure, and why it is the ideal choice for use in the replacement o...
M H Freeman, J A Brient, M Manning
Biosourced hybrid phenolic resins as coatings for the protection of wood and wood composites
2019 - IRG/WP 19-30745
Biosourced phenolic resins, based on the phenol-formaldheyde (PF) type, were prepared for their application as coating for wood and wood composites protection, especially against fire. The resins were synthesized by combining an organic polymeric matrix with another inorganic phase. The organic phase was prepared substituting phenol by natural phenolic compounds such as lignin and tannins. The ino...
P L de Hoyos-Martínez, R Herrera, J Labid, F Charrier El Bouhtoury
Wood Protection Through Diffusion: Dimensional Stabilisation with Amine Oxides
2019 - IRG/WP 19-30747
Wood is a phenomenal construction material. In addition to its great physical properties and its beautiful appearance, it possesses many environmental-friendly virtues like the sequestration of carbon dioxide. It is however subject to dimension changes when submitted to fluctuating moistures levels, which can lead to warps, cracks and the peeling of paints. Many water repellents can slow down the ...
S Pepin, P Blanchet, V Landry
Exemplary aboveground hardwood protection from Coptotermes curvignathus under weathered conditions conferred by proprietary microemulsion-based cypermethrin (SARPECO®) and permethrin (AXIL®) biocides
2019 - IRG/WP 19-30749
SARPECO® (with cypermethrin) and AXIL® (with permethrin) solutions are water-based wood preservatives approved for dipping treatment providing 25 years of termite protection for solid wood and wood-based products in Europe and for more than 10 years in Indonesia. SARPECO® and AXIL® solutions are patented formulations based on concentrated microemulsions (ME) diluted with water as a dipping tre...
D Messaoudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Using X-ray scattering to elucidate the mechanisms behind the moisture and fungal decay resistance of epoxybutene modified wood
2019 - IRG/WP 19-40854
Chemical modification of the hydroxyl groups of wood can improve the properties of wood by providing moisture and biological resistance, as well as dimensional stability. Southern pine solid wood was chemically modified to various weight percentage gains (WPG) with epoxybutene (EpB, 8%-38% WPG). After modification, specimens were extracted with a toluene: ethanol (2:1) solution for 2 hours or wate...
R E Ibach, N Plaza
Potential Use of the Pigment from Scytalidium cuboideum and Chlorociboria aeruginosa as an UV-light Protection Additive in Oil Finishes
2019 - IRG/WP 19-40868
UV-light degradation of wood is one of the top reasons for consumer replacement of outdoor wooden structures. This type of degradation is seldom mechanical, and is instead often motivated by loss of aesthetics (graying). There are numerous commercial products available on the market that deal with this loss of color, many of which contain added pigments to ‘rejuvenate’ or ‘revitalize’ grey...
S M Vega Gutierrez, D W Stone, R He3, P T Vega Gutierrez, Z M Walsh, S C Robinson
Protecting wood exterior infrastructures above ground in Spain. The importance of protection by design in the performance
2019 - IRG/WP 19-40874
Across Spain is very common to find wood exterior infrastructures build mainly in sawn and glue-laminated wood. Most of these exterior wood infrastructures use softwood wood species such as: fir, spruce, larch and pine. In Spain exterior wood infrastructures, became more and more popular since nineties, when sawn and glue-laminated wood were utilized for building exterior wood infrastructures in o...
D Lorenzo, M Touza, J Fernandez-Golfín, A Lozano, J Benito, M T Troya, L Robertson
The impact of additional interior layers to the moisture dry-out and mould growth risk of CLT walls
2019 - IRG/WP 19-40876
The objective of this study was intended to determine the maximum allowable initial moisture content for CLT walls having both exterior and interior thermal insulation. A laboratory test was conducted, for which four test walls with two different insulation solutions and two different initial moisture contents were built. Based on the test results a simulation model was configured and simulations ...
V Kukk, J Kers, T Kalamees
Engineered wood constructions in Brazil: the challenge of protection against biodeterioration for market growth
2019 - IRG/WP 19-40878
This paper presents some thoughts about Brazilian wood constructions market regarding to biodeterioration and protection against biodeterioration, especially termites. Despite of being a forestry country, there is no tradition in wood engineered buildings and some prejudice must be overcome.
New companies are interested in this market and as a continental country, different problems regarding of...
L F T di Romagnano, S Brazolin, G A da Silva, G A C Lopez
Wood protection techniques and natural weathering: their effect on aesthetics and preference of people
2019 - IRG/WP 19-50351
Current research successfully contributes to improving wood protection techniques. However, the vast majority of research on preventing degradation of wood ignores a critical aspect of making successful products and processes – user selection of materials, which may largely depend on the aesthetical qualities. Wood treatments change the tactile and visual properties of wood substantially and the...
D Lipovac, M D Burnard, A Sandak, J Sandak