Your search resulted in 671 documents. Displaying 25 entries per page.
Onset of mould growth – the effect of climate variability and different geographic locations
2010 - IRG/WP 10-20446
This paper presents a study on how climate conditions at numerous locations in Sweden affect the risk of onset of mould on wood sheltered outdoors. The results indicate that the risk is clearly higher in the south compared to the north of Sweden. These differences are mainly explained by colder and dryer winter periods in the north which is unfavorable for development of mould. The results also sh...
M Häglund, T Isaksson, S Thelandersson
Non-destructive evaluation of termite and decay damaged to timber-in- service
2010 - IRG/WP 10-20451
A leading joint research project was financed by the ARC, engaging some of the leading Universities in Australia, to look at field techniques to determine if timber-in-service is infested with termites and decay fungi after which microwave technology will be employed to eliminate the termites and/or decay in-situ. The next step will be to quantify the damage caused on the sectional dimensions of t...
C Adam, B M Ahmed Shiday, G Brodie
The biological durability approach for wood product performance and service life prediction
2010 - IRG/WP 10-20457
The performance of wood-based products under conditions that enable biodegradation are of concern to all who envisage sustainable use of forest based products. This concern is also the basis of classification of wood species on the basis of their biological durability. Engineers are looking for options to transfer such classification into practical service life values for constructions and related...
J Van Acker, J Van den Bulcke, L De Boever
Service life prediction for exterior timber cladding
2010 - IRG/WP 10-20460
This discussion paper considers service life prediction for timber and the work within the pan-European WoodExter project. The project aims to develop a model for service life prediction of exterior timber cladding, to enable better end use selection of material suitable for delivering the required service life of cladding and to provide information for professionals wanting to understand and use ...
E Suttie, F Englund
Assessment of Boracol 200RH (FrameSaver) as a remedial treatment to control decay in pre-decayed model timber frame units
2010 - IRG/WP 10-30529
Model timber frame units constructed from untreated radiata pine were pre-wetted to approximately 40% moisture content and inoculated with Coniophora puteana and Oligoporus placenta. Units were transferred to a controlled environment room maintained at 25°C and 95% RH for 7 and 10 weeks to allow two levels of decay to become established in units. Following pre-decay, units were disassembled, clea...
Mick Hedley, Dave Page, Jackie van der Waals
Antifungal Effect of Bark and Wood Extracts of Condalia hookerii (Rhamnaceae), Ebenopsis ebano (Fabaceae) and Helietta parvifolia (Rutaceae) on Trametes versicolor
2010 - IRG/WP 10-30532
This research detail the growing inhibition effect on Coniophora puteana and Trametes versicolor fungi caused by hot water sawdust and bark extracts of three semi-arid land species Condalia hookerii, Ebenopsis ebano and Helietta parvifolia diluted in malt extract agar medium at 2000 ppm and 10000 ppm. After 12-14 days incubation the inhibition growing effect was measured based on the difference be...
A Carrillo, J G Marmolejo, F Garza, V Bustamante, M Garza
Analysis of phenolic extractives from various Tunisian species trees -Study of its potential valorisation
2010 - IRG/WP 10-30552
Phenol extractives are naturally synthesized compounds taken from several trees. It is well demonstrated that the presence of phenol compounds is positively correlated with the durability of wood. This property is very interesting for outdoor uses of wood with a limited treatment. Phenol compounds may also be used in the formulation of glue. In the aim to improve the knowledge on Mediterranean tr...
I Oueslati, F Charrier, K Seffah, A Moubarik, N Ayed, A Zerizer, B Charrier
Chemical protection of historic timber structures: Results and future needs
2010 - IRG/WP 10-40487
The paper concentrates on the analysis of the effectiveness of chemical protection for timber structures in the Russian State Museums “Kizhi” (Karelia) and “Vitoslavlitsy” (Novgorod).
The condition of historic timber was tested at the monuments treated with PCP, borax, potassium carbonate, boric acid, Pinotex chemicals in the 1970-80. Long-term analysis revealed that in many cases the...
M Kisternaya, V Kozlov
Impact of wood species on the performance of exterior wood coatings
2010 - IRG/WP 10-40519
To prolong the service life of a wooden construction the protective function of a coating is of utmost importance. The chemical composition as well as the wood-coating interface affects the performance of this protective layer and obviously wood species have an impact too. This paper discusses the influence of wood species on the overall coating performance. Therefore, a range of opaque waterborne...
I De Windt, J Van den Bulcke, J Van Acker
Riverbed Construction Technology using Thinned Timbers for Carbon Dioxide Sink in Korea
2010 - IRG/WP 10-50271
The Climatic Change Convention is a big burden in limiting the energy usage like the blood of economy. The certification standard about the carbon storage of timbers after harvesting them is expected to be an important role in setting the goal for future reduction of the green house gas(CO2). The extension of a timber's life span through its preservation is one of technologies for carbon sink...
Dong-heub Lee, Won-Joung Hwang
Towards designing eco-friendly buildings with in-built termite protection
2010 - IRG/WP 10-50273
The increase in greenhouse gases, leading to global warming, is considered by a consistent scientific worldview not due to natural variation, but due to the growing concentration of carbon dioxide (CO2), methane (CH4) and other atmospheric pollutants. Global emissions of carbon dioxide from fossil fuel combustion and cement production rose from 22.6 billion tons in 1990 to an estimated 31.2 billio...
J R J French, B M Ahmed Shiday, B Maggiolo, D Maggiolo
Chapter 3 - Identification of bamboo
2007 - IRG/WP 07-10635-03
To ensure the exact identification of bamboo species of Bangladesh
possibly easy and non-instrumental distinguishing characters have
been described for prompt and easy assimilation by all level of
people usually involved in the system of bamboo protection
practices or in the modern bamboo management system. The
important bamboo species of Bangladesh have been described with
their external mo...
A K Lahiry
A Method for Studying Boron Redistribution and Leaching in Timber Framing
2011 - IRG/WP 11-20476
In typical New Zealand timber framed house construction, the timber framing has a vapour permeable building wrap applied to the exterior and a cladding applied over 20 mm battens. An interior lining usually of gypsum plasterboard is then fixed once the timber framing has a moisture content of < 20%. Timber framing within the building envelope is not expected to be wet in-service or exposed to a le...
J A Drysdale, N Marston, M E Hedley
Influence of wood swelling agents on penetration and copper leaching of copper-ethanolamine based wood preservatives
2011 - IRG/WP 11-30556
Copper ethanolamine based preservatives are currently the most important solutions for impregnation of wood in ground contact in Europe. One of the issues related to those and similar water based solutions is insufficient penetration to refractory wood species like Norway spruce. In order to elucidate this issue, commercial copper ethanolamine based solution was supplemented with five different wo...
M Humar, N Thaler, B Lesar
Phytosanitary standards and the potential for acceptance of chemical treatments as a phytosanitary measure
2011 - IRG/WP 11-30558
Regulations governing international trade in forest products must balance the economic and social benefits of trade with the potential risks of transporting invasive species. The International Plant Protection Convention (IPPC) is an international agreement intended to manage this process. It develops international phytosanitary standards (ISPMs) that are recognised by the World Trade Organisation...
A Uzunovic, R Stirling, J J Morrell, P I Morris, C F Schauwecker
Termite resistance of timber envelope treated with imidacloprid then modified by typical building site operations
2011 - IRG/WP 11-30570
Imidacloprid is a new envelope insecticide approved by Australian regulatory authorities for framing timber. It is a non repellent insecticide. Results are reported for timber envelope treated with imidacloprid and altered post treatment with typical building site operations to expose untreated surfaces. These modifications included, cutting, notching and drilling. Pinus radiata timber samples w...
K Day, A Siraa, P Lobb
Protective Levels of Borates in timber Foundation Piles 5 – 18 Years after In-situ Remedial Treatment in Areas with Wet Clay Ground Conditions. The Jerbor and Eurobor Protocol, Part 1.
2011 - IRG/WP 11-30571
Timber has been used as foundation piles and grillages for decades or even centuries. Since the late 1970s a method for investigate, analyze and treat building timber foundations in soft clay grounds against decay fungus with a biocide have been developed and used by the late professor Allan Jerbo. Settling of buildings in soft clay grounds is continuously monitored and if damages to the building ...
M Theorin, K-M Bandh
Effectiveness of Water Based Bentonite-Borate Slurry for In-situ Remedial Protection of Historic Wooden Piles: The Eurobor Protocol, Part 2
2011 - IRG/WP 11-30574
The study of the biocide product Eurobor®, water mixture of boric acid, borax and sodium bentonite, aimed to verify previous findings regarding borates penetration from a clay-water mixture of foundation timber. The product was applied on samples from 100 year old timber foundation from the city of Göteborg. Although in ground for this long the timber was in acceptable god condition due to groun...
M. Theorin, K. Fimmerstad, K-M. Bandh
Thermally modified timber (TMT) for decking applications – determination of relevant surface properties
2011 - IRG/WP 11-40544
In recent years thermally modified timber (TMT) entered various market segments. It is used for facades, horticultural equipment, garden furniture, and also for kitchen and bathroom cabinets. However, flooring turned out to be the most important application for TMT, either as interior parquet or as exterior decking. Besides durability and dimensional stability, which had been the initial target pr...
L Meyer, C Brischke, C R Welzbacher
A Critical Review and Survey of the US Wooden Pallet Industry: Focusing on Market Segmentation & N. American Trends
2011 - IRG/WP 11-40545
This paper reviews the history and current and predicted future use values in N. America. Included in this work is historical data on rationality and wood species used to manufacture wooden pallets in the USA and an ongoing current market survey sent to the 1000 largest manufacturers and re-manufacturers in the USA based on SIC Code 2448(Standard Industrial Code Classification). Although CHEP, the...
M H Freeman
Implementation of a Quality Assurance System for thermally modified timber (TMT) by the Association of Central European TMT-Producers
2011 - IRG/WP 11-40558
Due to increasing market shares of thermally modified timber (TMT) in Europe, a working group of ten central European TMT manufacturers (TMT-WG) was founded in 2010 to cover public relations and marketing activities. Since the present level of product testing and property declaration was not satisfying, a “task group TMT-quality” was put into action in 2010 to develop a comprehensive quality a...
C R Welzbacher, W Scheiding
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
Limited variability in biological durability of thermally modified timber using vacuum based technology
2011 - IRG/WP 11-40567
The SmartHeat® thermal timber treatment is a new technology based on the process parameters being steered very precisely mainly due to the vacuum applied and heating system involved. Timber treated with this technology shows a potential for less variability of biological durability in one batch. Several batch treatments were sampled and assessed on statistical variability of decay resistance agai...
J Van Acker, S Michon, J Van den Bulcke, I De Windt, B Van Swaay, M Stevens
Re-use of casting timber
2011 - IRG/WP 11-50283
Re-use of casting timber could be a way of saving timber resources, particularly in countries where most timber for construction purposes has to be imported. The objective of the present study was to investigate residual concrete on casting timber re-used five times. Moulds were made of sections of Norway spruce, untreated and treated with a casting oil and a wax formulation applied by a vacuum-pr...
I Johansson, S Breyne, H Egnell, J Jermer
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