Your search resulted in 831 documents. Displaying 25 entries per page.
Ancillary properties of vapor boron-treated composites
2001 - IRG/WP 01-40210
This paper discusses the water absorption, thickness swelling, and internal bond strength of North American composites treated using a vapor boron treatment process. For oriented strandboard, high boron loadings led to lower internal bond strength and lower thickness swelling. Water absorption results were variable but no deleterious effect of treatment was noted. For medium density fiberboard, th...
W A Jones, H M Barnes, R J Murphy
Envelope treatment to protect softwood timbers from damage by subterranean termites
2003 - IRG/WP 03-30313
Two aboveground field trials were conducted in Australia to determine the effectiveness of envelope treatments of deltamethrin and permethrin for the protection of softwood framing timbers against termite damage. Radiata pine Pinus radiata D.Don and slash pine Pinus elliottii Englem., were treated with Tanalithä T (a novel solvent) to achieve 5-mm-depth envelopes. Details of a field trial against...
B C Peters, J W Creffield
A behaviour of CCA penetration of fir (Abies bornmulleriana Mattf.) at different ramp times and constant vacuum/pressure applications
2006 - IRG/WP 06-40346
A behaviour of CCA penetration of Bornmulleriana fir (Abies bornmulleriana Mattf.) at different ramp times and constant vacuum/pressure applications was illustrated for the main flow directions by the experimental pictures....
I Usta, R Despot, M Hasan
Protection of OSB against termites by incorporation of different actives via glue line treatment
2008 - IRG/WP 08-30453
Different organic actives and zinc borate were incorporated into OSB during the manufacturing process to enhance the resistance against termites. Tests according to EN 117 revealed excellent performance of thiacloprid. Other organic actives such as permethrin might be effective when used in higher amounts. Zinc borate failed the test by far....
S Donath, P Spetmann, T Jaetsch, T Zahlmann
Penetration of deltamethrin in micro-emulsion formulation after injection in wood
1996 - IRG/WP 96-40068
In the Netherlands (and some other European Countries) the remedial treatment of death watch beetle is still a problem. This is because the larvae of this insect penetrate the central heartwood of mainly large oak beams. The heartwood is difficult to treat. The preventive treatment of wood boring insects has only recently been permitted in the Netherlands. Since 1989 injection of insecticides is r...
P Esser, W L D Suitela
The effect of treatment temperature on the biological performance of CCA treated wood
1990 - IRG/WP 3624
Birch and Scots pine sapwood blocks were treated with several concentrations of CCA at three different temperatures: 5, 20 and 35°C. The treated wood was maintained at the appropriate temperature for the fixation period. Leached and unleached samples were then exposed in a soft rot monoculture test using Chaetomium globosum and a brown rot monoculture test using Coniophora puteana. The treatment ...
S M Gray
Soil contamination at the wood preservation industry: Treatment technologies
2001 - IRG/WP 01-50166-16
The soil is a specific compartment of the biosphere, because it is not only a geochemical sink for contaminants, but it also acts as a natural buffer, controlling the transport of chemical elements and substances to the atmosphere, hydrosphere, and biota. Soil contamination problems are expected at wood preservation sites, particularly at those which use(d) inorganic wood preservatives or creosote...
A B Ribeiro, L M Ottosen
The Effect of Heat on the Retention of Ammoniacal Copper Quat (ACQ-AB) onto Scots Pine (Pinus Sylvestris L.) Wood
2008 - IRG/WP 08-40390
In this study, the sapwood of Scots pine (Pinus sylvestris L.) were treated with ammonical copper quat type (ACQ-AB), which is one of the environmentally friendly wood preservatives, by using soaking method as a functions of various temperatures and time. The results indicated that the retention behaviour of ACQ onto the wood was considerably affected by temperature of ACQ solution and treatment t...
M Hakki Alma, A Mukremin Kara
Bamboo preservation in Vietnam
2009 - IRG/WP 09-40457
This paper presents the current state of bamboo preservation in Vietnam. The report focuses on the importance of bamboo preservation in relation to the bamboo resource and utilization, the major methods for preservation (such as non chemical und chemical methods), and emphasises the today’s pressing problems of research, standards as well as information for the bamboo preservation industry in Vi...
Tang Thi Kim Hong
The resistance of wood coated with different solvent-borne paints against colonisation by decay fungi
2009 - IRG/WP 09-40468
This paper examines different solvent-borne paints characteristics and their decay resistance when applied on pine wood surface. It was determined by the standard ENV 839 procedure. The part of samples were subjected to accelerated ageing according to the EN 84 standard. The discussed commercial paint systems were typical stains or penetrating oil-based products, with or without biocides....
B Mazela, P Hochmańska
Heat treatment of wood strands for OSB production: Effect on the mechanical properties, water absorption and dimensional stability
2002 - IRG/WP 02-40238
The effect of heat treatment on the mechanical and physical properties of commercial OSB strands was evaluated. Heat treatment was applied under inert atmospheric conditions to wood strands. The aim of this study was to examine the heat treatment parameters to achieve significant reduction of thickness swelling (upon exposure to moisture in service) without causing excessive
reductions in stren...
G J Goroyias, M D C Hale
Investigation of some technical properties of heat-treated wood
2003 - IRG/WP 03-40266
The objective of this study was to investigate some technical properties of heat-treated wood.
Wood heat-treated according to a process intended for wood in above-ground end-uses (European hazard class 3) was subject to the following:
· A delamination test according to EN 391 with glulam beams made of heat-treated pine (Pinus sylvestris) and spruce (Picea abies) laminations, assembled with PR...
C Bengtsson, J Jermer, A Clang, B Ek-Olausson
Vapour boron treatment of wood based panels: Further studies on mechanical properties
1993 - IRG/WP 93-30028
Samples of medium density fibreboard, chipboard and oriented strandboard were treated to two retentions of boric acid by vapour phase methods. The results of short term mechanical tests on this material were discussed by Hashim et al. (1992). The present paper discusses results with long term studies on bending and impact resistance with panel types. Long term tests of impact resistance showed no ...
R Hashim, R J Murphy, D J Dickinson, J Dinwoodie
Treating Eucalyptus tereticornis wood with boron: Optimizing treatment conditions
2005 - IRG/WP 05-40309
Even though Eucalyptus tereticornis wood is suitable for small timber purposes, being non-durable, it needs to be treated with preservative chemicals. As it is a heavy, hard and difficult to treat species, the possibility of using diffusible boron compounds was investigated. The present study explored the effect of impregnation conditions such as treatment schedule, concentration of treatment solu...
T K Dhamodaran, R Gnanaharan
Non Toxic Remedial Treatment of Bamboo Structures/Furniture
2010 - IRG/WP 10-40516
Molds and beetles often attack bamboo furniture and structures when used in untreated or inadequate preservative treatment. Remediation or eradication of infestation often involves expensive chemicals (fumigants) and specialized methods, which are not available in villages. Novel inexpensive methods using easily available chemicals were developed for controlling such infestations. Whereas applicat...
S Kumar
Chapter 1 - Introduction to bamboo
2007 - IRG/WP 07-10635-01
In this introductory chapter the botanical position, distribution, utilization,
outlooks, production, research, importance, propagation, natural
durability, preservative treatment, importance of preservative treatment,
treating principles, research on preservative treatment of bamboos and
the objectives of this book have been described briefly under individual
caption....
A K Lahiry
Resin bleed after light organic solvent preservative treatment - the effect of drying method and process type
1986 - IRG/WP 3378
The effects of drying method and treatment process type on resin bleed were investigated. High-temperature drying of resinous radiata pine (Pinus radiata D. Don) heartwood resulted in improved wood permeability, higher preservative uptake, and greater resin bleed when treated by the Rueping process. Resin bleed was reduced substantially when timber was treated by the Lowry process, and totally eli...
P Vinden
Highly virulent wood-rotting Basidiomycetes in cooling tower timbers
1995 - IRG/WP 95-10125
Over the past ten years most industrial cooling towers changed their water treatment systems in order to meet environmental requirements. Since this alterations wood rot attack has been reported more frequently. Several Basidiomycete fungi were isolated and determined. Amongst the most important ones are strains of Physisporinus vitreus (Pers.:Fr.) P. Karst., Phellinus contiguus (Fr.) Pat. and Don...
J Van Acker, M Stevens, V Rijckaert
Novel wood modification processes for window and cladding products
2004 - IRG/WP 04-40285
Because of the low natural durability and low dimensional stability of European wood species, the usage of wood for window frames has decreased dramatically during the last decade. In a joint project of several German research institutes and the window industry, following wood modification systems were compared.
heat treatment (3 different materials from 2 companies)
acetylation (pine sapwood an...
A Krause, C Hof, H Militz
Bending Properties of FRT OSB
2012 - IRG/WP 12-40600
Fire retardant treated (FRT) oriented strandboard (OSB) and plywood of different widths were tested in static bending to determine width effects. Results were consistent with previous width effect studies and showed that increasing specimen width results in a decrease in sample MOR properties among all the sample groups tested in this study. Increasing sample width for OSB samples leads to more ...
J M Hill, H M Barnes, S Q Shi
Observations on the uptake and penetration of various liquids in clear heartwood and sapwood of Pinus radiata D.Don
1983 - IRG/WP 3224
Volumetric uptake of water (aqueous copper-chrome-arsenic (CCA)) or methanol, applied by bulk hydrostatic pressure to air dried clear heartwood specimens of Pinus radiata D. Don, far exceeds that of a wide variety of polar and non-polar solvents. In air dried sapwood, the volumetric uptake of CCA tends to be less than that achieved for most solvents including methanol. No comprehensive explanation...
J E Barnacle
The distribution of introduced acetyl groups and a linseed oil model substance in wood examined by microautoradiography and ESEM
2000 - IRG/WP 00-40169
Microautoradiography, a photographic method that shows the localization of substances labelled with radioactive isotope, and Environmental Scanning Electron Microscopy (ESEM) were combined to enhance sensitivity, resolution and reliability for examination of the distribution of introduced substances in wood. The preparation of microautoradiographs is less complicated when investigated with ESEM an...
M Rosenqvist
Preservative performance of copper naphthenate (SANPRESER-OGR) in brush treatment of timber
1991 - IRG/WP 3663
Preservative efficacy of copper naphthenate (SANPRESER-OGR) was evaluated in the laboartory and field trials when timber was treated by brushing. Results of field trial indicated that service life of the brush-treated timber could be approximately 10 years or longer under ground contact conditions, although life span was slightly varied with timber species and test sites. After four years&apos...
Y Sugai, K Hamada, M Kitada, K Tomoi
Bending properties of treated western hemlock plywood
1996 - IRG/WP 96-40064
This study investigated the mechanical properties of western hemlock plywood after treatment with waterborne preservatives and redrying. Unlike previously reported results for southern pine plywood, western hemlock plywood was more sensitive to redrying temperature than to preservative treatment. Generally, western hemlock plywood was affected by temperature and other variables. Losses in mechanic...
H M Barnes, A Khouadja, D E Lyon
Radio frequency heating times for sterilization radiata pine solid piles
2017 - IRG/WP 17-40815
In this work was sterilized wood packaging material of radiata pine, stacked as solid piles without stickers, for determining the heating times using radiofrequency treatment. The experiments were performed in a radio frequency semi-industrial equipment. The results showed that the radio frequency heating times increases with wood volume and that radio frequency treatments were faster than convent...
H Esquivel, V Sepúlveda, J Torres, L Salvo, R A Ananías