Your search resulted in 3419 documents. Displaying 25 entries per page.
Development of markers to predict decay durability of heat treated wood
2010 - IRG/WP 10-40496
Effect of heat treatment temperature on elemental composition of Scots pine sapwood (Pinus sylvestris) has been investigated in the range of temperatures between 220 and 250°C. Results revealed an important increase of carbon content, while oxygen content significantly decreases. Independently of the heat treatment temperature, elemental composition is strongly correlated with the mass losses due...
Ž Šušteršic, A Mohareb, M Chaouch, M Pétrissans, M Petric, P Gérardin
Wood Protection in Croatia – Situation from the Acquisition of Independence till Today
2010 - IRG/WP 10-40501
In the last eighteen years in Croatian wood-working industry, respectively wood protection industry, many good changes happened. In such a short period of time Croatian industry changed their “product philosophy”. After the fatherland war and acquisition of independence the most logs and sawn wood products have been exported from Croatia. With such “kind of philosophy” Croatian wood-workin...
R Despot, M Hasan
Wood protection by means of electro osmotic pulsing technology (PLEOT)
2010 - IRG/WP 10-40505
Wood protection is mainly based on chemical protection of wood. The disposal of wood preservative treated material causes restrictions in its later use or recirculation into the eco-cycle. A new protective system, electro-osmotic pulsing technology on wood, called PLEOT, is tested in a fungi test and in soil contact. Mass loss and moisture content of Scots pine sapwood samples was calculated after...
A Treu, E Larnøy
Ecological methods and products for wood protection used for restoration and conservation of built heritage cultural assets to increase natural durability and duration of exposure in open air museums
2010 - IRG/WP 10-40506
Wood is a perishable material, hygroscopic and fuel, which cause attention to selecting the wood species that is going to be exhibited in relation to humidity and soil. With variable depending on its humidity and moisture from the atmosphere or soil, wood is a good living environment for fungi and insects, but suffer biodegradation processes and dimensional changes. Observations over time on wood ...
M Pruna, D Purice, D Dumitru Copacean
Effect of Nano-Silver Treatment on Densified Wood Properties. Part One: Swelling, Recovery Set, Bending Strength
2010 - IRG/WP 10-40533
In this research the effect of Nano-Silver treatment on compressed wood properties, was studied. Wood specimens were cut from Popolus alba (poplar) and impregnated with Nano-Silver and water. Then the saturated samples were compressed through radial direction in a hot press under pressure of 6 MPa, for 1 and 4 hours. The temperatures of press were 150°C and 175°C. Swelling (24h), recovery set ...
G Rassam, H Reza Taghiyari, B Jamnani, M Ali Khaje
Comparative Study of Heat Treatment of Beech Wood in Hot Water and Steam Medium
2010 - IRG/WP 10-40536
Heat treatment of wood is an effective method to improve the dimensional stability and durability against biodegradation. Heat treatments of beech wood in 2 different mediums (hot water and steam) in 180ºC were compared in physical, mechanical and anatomical properties. Mass loss in hydrothermally treated wood was higher than hygrothermally treated samples. Mechanical properties (MOR, MOE and CS)...
A Talaei, K Yaghoobi, A N Karimi
Climate change and wood protection, increasing demand of long life wood products and decreasing production of treated wood
2010 - IRG/WP 10-50269
Several new topics related to wood protection sector has appeared in Japan, as the awareness of climate change becomes bigger and bigger. The “Basic act for housing (2006)” and the “Long-life housing promotion act (2009)” were enforced to form a safe and high quality housing stock and to form a long-service-life housing respectively. Despite of the favorable background for wood protection ...
K Yamamoto, H Kato
Wood protectors sensitivity of Fusarium circinatum, a quarantine organism in Europe
2011 - IRG/WP 11-10755
In the last decade, two new organisms with a high potential damage in Conifer forests have been detected in Europe. They are the nematode Bursaphelenchus xylophilus and the fungus Gibberella circinata (anamorf: Fusarium circinatum), and have driven the European Union to protect the stands from propagation and dispersion of these new pathogens.
The nematode was detected first in Setubal (Portugal)...
Y Serrano, S Cobacho, A Navas, M Conde, R Raposo, M T Troya
A comparative study and evaluation of methodologies used for determining wood preservative penetration
2011 - IRG/WP 11-20475
A series of methods for determining penetration of wood preservatives into the wood structure have been developed for either quality control (QC) or research and development purposes. QC methods range from monitoring the solution uptake, applying colour indicators or sampling specific wood samples followed by wood acid digestion/atomic absorption spectroscopy (AAS) or solvent extraction/chromatogr...
R Craciun, R Moeller, J Wittenzellner, T Jakob, J Habicht
Wood protection by nano silver against white rot
2011 - IRG/WP 11-30554
This research was done with the aim of investigation on the natural durability of poplar (populous deltoides) in natural situation and treated with nano silver against the white rot. Testing samples was treated with the method of modified soaking and nano silver in 3 treating level of 0,200 and 400ppm.
In this study effect of coriolus versicolor fungus (identificated as white rot) on populous del...
V Tazakor Rezai, A Usefi, M Soltani
Tannin resin-boron for outdoor wood protection and fire retardancy
2011 - IRG/WP 11-30567
Boron in the form of boric acid is well known for its efficacy against wood destroying organisms, as well as for its high leachability from treated wood when in outside exposure. Moreover, due to the European directive 2008/58/EC, boric acid is only authorized at low levels. In order to keep considering boric acid as an interesting active ingredient for wood protection, the issue is now to fix it ...
M-F Thévenon, G Tondi, N Leménager, S Wieland, A Pizzi
ISPM No. 15 and the Incidence of Wood Pests: Recent Findings, Policy Changes, and Current Knowledge Gaps
2011 - IRG/WP 11-30568
Largely as a result of international trade, hundreds of species of bark- and wood-infesting insects have become established in countries outside their native range. Many of these exotic insects have caused severe economic and environmental impact to urban and forest trees in the receiving countries. Most bark- and wood-infesting insects have been transported to new countries by means of the wood...
R A Haack, E G Brockerhoff
The potential of propolis and other naturally occurring products for preventing biological decay
2011 - IRG/WP 11-30575
The potential of using a range of naturally occurring plant extracts and propolis from bee hives for enhancing the durability of timber in service as well as helping with the conservation of archaeological timbers is considered in this paper. Results reported demonstrate that there is some degree of protective effect noted, suggesting a viable treatment option might be developed based on a deeper ...
D Jones, N Howard, E Suttie
Design, synthesis, characterisation and effectiveness of ‘Locked-in-Boron’ chemicals for H3.2 level of wood protection
2011 - IRG/WP 11-30577
Boratrane molecules with five-membered and six-membered molecular ring systems, and with various ring substituents were synthesised, characterised and formulated for wood treatment for accelerated laboratory bioassays using wood decay fungi as test organisms. Six-membered ring boratranes showed lower efficacy in laboratory assays than five-membered ring boratranes. One alkyl-substituted boratran...
R Franich, H Kroese, S Gallagher, S Hill, B Kelly, G Billett, R Meder, W Rae
The potential of silicone-based formulations to enhance wood properties through industrial treatment for outdoor use
2011 - IRG/WP 11-30578
High hygroscopicity is one of the main weaknesses of wood as far as its susceptibility to biodegradation, and specifically to fungal decay. New wood preservation technologies are constantly entering the wood protection market, competing with traditional, biocide-based preservation. Silicones are commercially used as hydrophobic agents on stones and concrete. They belong to the restricted number of...
F Simon, F Marchal, F Pochon, M Kutnik, I Le Bayon
Challenges and new developments in testing electro osmotic pulsing technology (PLEOT) by means of conventional laboratory methods
2011 - IRG/WP 11-40555
A new wood protection system, electro-osmotic pulsing technology, called PLEOT, is tested in lab trials using different test setup. The technology is tested on Scots pine sapwood and beech wood samples exposed to brown- and white rot fungi. Mass loss and moisture content is calculated after testing and a chitin analysis are performed on the sample powder.
Two different electrodes are used in ord...
A Treu, E Larnøy
Effects of Heat-Treatment in Hot Water and Steam Mediums on Gas Permeability of Beech Wood
2011 - IRG/WP 11-40557
Heat-treatment, as a major method of wood modification, improving dimensional stability, and natural durability, has been studied greatly from different aspects. The effect of heat-treatment on gas permeability, as an important physical property of wood, in two different mediums of hot water and steam, as well as in two buffers of 7 and 8, is the main topic of the present study. Hydrothermal treat...
H Reza Taghiyari, A Talaei, A Karimi
Utilization of thermodesorption coupled to GC-MS to study kinetics of thermodegradation of different wood species
2011 - IRG/WP 11-40559
Thermdesorption coupled to Gas Chromatography coupled to Mass Spectroscopy (TD-GC-MS) has been investigated to identify volatile degradation products generated during wood heat treatment by mild pyrolysis. For this purpose, wood samples of different softwood and hardwood species have been heat treated under nitrogen for different temperatures comprised between 180 and 230°C during 15 min. in the ...
K Candelier, M Chaouch, S Dumarçay, A Pétrissans, M Pétrissans, P Gérardin
Moisture protection and performance during 5 years exposure of 19 wood coating systems on a cladding in Vienna
2011 - IRG/WP 11-40561
A cladding with vertical boards of Norway spruce (Picea abies) comprising different coating systems had been exposed to natural weathering oriented south west in Vienna for 5 years. Weathering behaviour of the boards was assessed in intervals and wood moisture content was measured over the first 22 months of exposure. The moisture protective properties of the coating systems were assessed using la...
G Grüll, I Spitaler, M Truskaller
Optimization of the bi-oleothermal treatment process for wood preservation and fireproofing
2011 - IRG/WP 11-40566
The bi-oleothermal© process (combination of oil and heat treatment) is a well mastered alternative method for wood protection. However, the fire behavior and resistance to decay of bi-oleothermally treated wood are not good enough to ensure performance which meets the service standards for outdoor applications such as cladding or decking expected by the market. The aim of the present research pro...
F Simon, M Kutnik, M Goyer, M-F Thévenon, C Alfos, M Céron
Effect of Nano-silver Treatment on Densified Poplar Wood Properties. Part Two: Spring Back, Compression set, Impact Load Resistance and Hardness
2011 - IRG/WP 11-40568
This paper is the second part of the study of applying nano-silver treatment before densification of poplar wood (Popolus alba). The specimens were prepared in four groups of: 1) nano-silver impregnated 2) water impregnated 3) dried with no impregnation and 4) the control specimens. The impregnation process was done by empty cell process. Then, the groups of 1 to 3 were compressed in a hot press a...
G Rassam, H Reza Taghiyari, B Jamnani, M Ali Khajeh
Effects of nano-silver on brittleness of heat-treated solid woods
2011 - IRG/WP 11-40572
The present study is aimed at the effect of heat-treatment of normal as well as nano-silver-impregnated Populus nigra, Populus deltoides, and Fagus orientalis on brittleness. Specimens were impregnated with 200 ppm water-based solution of nano-silver particles under 3 bars in a pressure vessel using empty-cell process. For heat treatment, both nano-silver-impregnated and normal specimens were kept...
H Reza Taghiyari, B Moradi Malek, A Karimi
The overview of ISPM 15 implementation in Croatian wood-working companies
2011 - IRG/WP 11-30576
Croatia is a small European county, but in the same time a great country according to it’s tradition in the forestry and wood working industry. However, around 48% of it’s territory is afforested. As the export is one of the main directions in the Croatian development conception, the production and distribution of wood package intended for the international trade, is one of the most important ...
R Despot, V Jambrekovic, M Hasan
TRU-CORE Process for Treatment of Refractory Species and Engineered Wood Products
2011 - IRG/WP 11-40573
The TRU-CORE Process is a novel, chemically-based technology for rapidly delivering globally accepted wood preservatives and insecticides deep into the core of wood and wood-based composites in a waterborne carrier. Protectant materials which can be utilized with the TRU-CORE Process include a variety of carbon-based fungicides and insecticides. An important feature of the TRU-CORE Process is it...
A S Ross
In-situ experimental treatment and consolidation of degraded timber elements from a XIX century building
2012 - IRG/WP 12-10767
This paper presents the in situ experimental conservation work performed on three timber structural elements from a XIX century building: two floor beams and one roof beam. The palace was built in 1877 in the centre of Lisbon initially with residential purposes. It has four floors, with timber structural horizontal elements, stairs and roof beams (generally of Pinus sylvestris L.). The exterior wa...
D F Henriques, J de Brito, L Nunes