Your search resulted in 184 documents. Displaying 25 entries per page.
Leachabilty and efficacy of fatty acid derived boron esters as wood preservatives - leachability and efficacy of fatty acid derived boron esters as wood preservatives
2004 - IRG/WP 04-30351
Borates have many advantages as wood preservatives. However, boron is susceptible to depletion under humid conditions and this restricts its outdoor use. In order to reduce boron leachability in treated wood, one of the anticipative approaches is to use organic fixed boron-based preservatives. This study investigated the leachability of six boron ester compounds as potential preservatives. Scots p...
A Mohareb, J Van Acker, M Stevens
Soil treatment tests with the three products of boric acid for the prevention of the hyphal growth of Serpula lacrymans
1992 - IRG/WP 92-3693
Laboratory soil treatment tests were conducted for the evaluation of fungicidal or fungistatic effect of boric acid products against Serpula lacrymans. Boric acid products tested were the following three: a thickened boric acid solution in triethanolamine, boric acid-silica gel complex granules, and a nonwoven fabric laminated with a polypropylene film and coated with boric acid granules on one si...
S Doi, A Yamada, Y Mineki, M Mori
Toxic values derived from EN 113 tests - are they determined by the virulence of a test fungus?
- Results from a round robin test -
1999 - IRG/WP 99-20176
The virulence of Coniophora puteana BAM Ebw. 15, the obligatory test fungus on softwood in tests according to EN 113, is known to be rather inconstant at least in some laboratories. The mass losses of untreated Scots pine sapwood blocks in an EN 113 test may range from below 20% to up to more than 50%. Possible reasons for these differences as well as the impact of a low virulence on the toxic val...
H Leithoff, R-D Peek, H V Borck, R Goettsche, H Kirk, M Grinda
The high decay resistance in the sapwood of the naturally durable Malaysian hardwood Belian (Eusideroxylon zwageri)
2001 - IRG/WP 01-10410
It has long been assumed that the observed natural durability of the heartwood in certain timbers is perhaps associated with a relatively lower decay susceptibility also of the sapwood of these species. While the heartwood of Belian is reputedly highly decay resistant among the tropical hardwoods of Southeast Asia, laboratory decay tests reported in this paper have also confirmed the high decay re...
A A H Wong, A P Singh
Variable tolerance of Ophiostoma spp. and Diplodia pinea to commercial antisapstain products
1998 - IRG/WP 98-10266
A recent survey of the occurrence of sapstain fungi in New Zealand, conducted at The University of Waikato, provided the opportunity to examine fungicidal tolerance amongst new isolates. It also enabled a comparison of tolerance amongst new isolates with those used in routine antisapstain screening trials at Forest Research.
A rapid antisapstain laboratory disc trial was used to determine the ext...
D R Eden, C M Chittenden, B Kreber, J G Van der Waals, R N Wakeling, R L Farrell, T Harrington
Serial techniques for producing fire-retardant wood products
1997 - IRG/WP 97-30127
A series of techniques including fire-retarders denoted by WFR-1, WFR-2. WFR and their applications in producing fire-retardant wood (WFR wood), fire-retardant plywood (WFR plywood), fire-retardant particleboard (WFR particleboard) and fire-retardant MDF (WFR MDF) were investigated The fire retarders were low toxic, decay resistant and less leachable. The treated wood and WFR panels were of excell...
Zhu Jia Qi, Liu Yan Ji, Gao Chao Ying
Evaluation of tropical wood by-products as a potential source for termite control products
2001 - IRG/WP 01-10408
Termites damaging in houses represent an ever growing threat in Europe, where the phenomenon has accelerated during the last ten years, as well as in the tropics, where infestations are permanent. To fight against this plague, the current methods used, through injection of organochloric or organophosphorized products into the timber structures and walls, are belonging to the past due to the toxici...
A Zaremski, S Robert, J-L Clement, D Fouquet
Preliminary tests on the effect of naturally occurring chemicals on termites
1983 - IRG/WP 1181
Twenty-eight naturally occurring chemicals consisting of monoterpenes, quinones and wood·extractives were tested against seven species of termite. Small pieces of filter pad and agathis wood chips measuring 5 mm by 10 mm were treated with the chemicals and exposed to the termites in polystyrene weighing bottles. Results of the tests revealed that the chemicals inhibited the feeding behaviour of t...
Nana Supriana
Gaseous boron treatments of wood and wood products
1992 - IRG/WP 92-3691
Treatment of wood and wood products by gaseous organoborates has now been under study for about 5 years. This technique has potential for boron treatment of a wide range of substrates from solid wood through to wood composite materials such as particleboard or wet and dry formed fibreboards. The vapour treatment technique is proving to be very flexible in that it can be adapted to integrate into a...
A J Bergervoet, R Burton, K Nasheri, D R Page, P Vinden
Subterranean termite foraging behaviour and the development of baiting methods used for termite control by the Division of Forest Products
1994 - IRG/WP 94-10058
Given the premise that alternatives to current subterranean termite control measures using organochlorine insecticides and arsenic trioxide have been actively researched by our Division for over ten years, emphasis on baiting methods in controlling these termites has been a major facet of our research. Recently, the new Australian Standard (AS 3660 -1993) was released which outlined the use of phy...
J R J French, J W Creffield, B M Ahmed
Environmental evaluation of products by life cycle analysis [La problématique de lévaluation environnementale des produits à partir de l'analyse de leur cycle de vie et de leur "écobilan"]
1993 - IRG/WP 93-50002
In the last years a significant evolution in terms of industrial environment emerged. It has been realized that regulations on specific pollutants, controls on industrial sites, although indispensable actions, had to be completed with extended approaches based on the assessment of products and integrated substance chain management. To take into account such an approach, methodological researches h...
G C Landrieu
Wood preservation in Brazil
1984 - IRG/WP 3321
The report gives statistics on the wood products industries, the forest products exported, the production of treated sleepers, poles, crossarms, fence posts and other wood products in Brazil for the years 1977 to 1981. The total numbers of vacuum/pressure plants, through the years 1902 to 1984, indicate that from 1960 there has been a steady increase in treatment requirements. Most of the plants a...
M S Cavalcante, R Cockcroft
Anti-fungal properties of pyrolytic oils derived from softwood bark
2000 - IRG/WP 00-30218
Thermal decomposition of balsam fir and white spruce mixed bark residues at 450°C and under vacuum (< 20 kPa abs.) results in high yields of pyroligneous liquors rich in phenolic content. This vacuum pyrolysis process has been scaled-up to a pyrolysis plant with a feed capacity of 3.5 t/h of softwood bark, which is the largest plant of this type in the world. The pyrolytic aqueous condensates ...
D Mourant, Dian-Qing Yang, Xiao Lu, C Roy
An anti-termite formulation for soil treatment with natural products and its efficacy against Coptotermes formosanus Shiraki
2003 - IRG/WP 03-30319
An anti-termite formulation of an environmental conservation type for soil treatment was developed. The formulation was composed of decanoic acid (n-capric acid, an fatty acid derived from coconut oil with ten carbons) as an active ingredient and other natural products. Experiments to examine the efficacy of the formulation against Coptotermes formosanus Shiraki were conducted at the termite field...
S Yoshida, T Nakagaki, A Igarashi, A Enoki
A new preservative - A double-edged sword
1990 - IRG/WP 3573
Increasing environmental pressures on the use of pesticides throughout the world will impact more on the use of all wood preservatives. In particular the use of traditional wood preservatives and methods of application are under close scrutiny. The industry is responding to the challenge of developing alternative products and systems but faces great problems due to the excellent performance and sa...
M Connell, J A Cornfield, G R Williams
Issues Facing Wood Preservation in Australia Today
2003 - IRG/WP 03-30327
Timber and timber products are a major part of the Australian building industry and preservative treatment is a common consideration for most timber users. Despite this however, there is a major lack of awareness by the users of the various issues associated with preservative treatment.
Australian treatment specifications are logical, concise and uncomplicated. There are three agencies in Austr...
J Norton
Future insecticidal treatments for wood products
1980 - IRG/WP 3140
Protective measures involving chemical treatment of wood use only a narrow range of toxic materials which are divisible into two groups, (i) those that are water-soluble, (ii) those that are soluble only in organic solvents. It is generally true to say that, as far as protection against insects is concerned, the former are stomach poisons while the latter are largely (though not exclusively) conta...
D J Cross
Field evaluation of anti-sapstain products
1987 - IRG/WP 3402
Product A based on methylenebisthiocyanate, product B based on methylenebisthiocyanate plus 2-thiocyanomethylthio-benzothiazole, product C based on 2-thiocyanomethilthio-benzothiazole and product D based on didecyl dimethil ammonium chloride plus 3-iodo-2 propynil butyl carbarnate were evaluated on Pinus radiata sawn timber as fungicides for sapstain and mould in the Sawmill Division of the Univer...
M C Rose, A Bedoya
Environmental characterisation of retification process by-products (liquid and gaseous wastes)
2005 - IRG/WP 05-50224-10
In order to reduce environmental risks during the service life of the treated wood and to find new alternative developments on the durability of wood, some research and technology development have been made on thermal treatment. The retification process is one of these processes. The retification process induces chemical modification of the lignin and cellulosic components and modifies the intrins...
G Labat, E Bucket, S Legay, C Yriex, P Marchal, E Raphalen, M Vernois, R Guyonnet, H Besset, E Fredon), G Vilarem, L Rigal, C Raynaud
Wood injurers found at wood processing plants in SR Sloveni
1981 - IRG/WP 1140
This report describes the stating of damages on wood and taking stock of wood injurers found in the warehouses of wood processing plants in SR Slovenia. The results of this research show that in the process of manufacture vast quantities of spruce-wood, pine-wood, beech wood, oak-wood, and poplar-wood are exposed to numerous injurers, both fungi and insects. The reasons for such a state lie in con...
R Benko
Preliminary investigation on the natural durability of Guayule (Parthenium argentatum)-based wood products
2000 - IRG/WP 00-40154
Conventional preservatives used to protect wood from insect and microbial damages are presently of major concern to human health and the environment. Finding alternative and economical preservatives has not been successful. Previous studies have shown that the resinous material extracted from the guayule plant (Parthenium argentatum, Gray) has both insect- and microbial-resistant properties. Unfor...
F S Nakayama, P Chow, D S Bajwa, J A Youngquist, J H Muehl, A M Krzysik
Preliminary desk research in the Netherlands on development of a Knowledge Based System for Life Cycle Assessment of wood products
1997 - IRG/WP 97-50093
TNO is currently coordinating an EC-project (LIFE-SYS WOOD) to develop a consistent approach to Life Cycle Assessment (LCA) of wood products. Existing and new LCA-inventory data of six wood products will be evaluated on reliability and consistency. After validation, LCA-results will be made available through a Knowledge Based System (by 1998-1999). The aim of the KBS is to make LCA-results availab...
P Esser, D Robson, R Vanhauten
Feeding response of field populations of Coptotermes species to softwood blocks treated with non-toxic water-proofing and anti-microbial products.
2003 - IRG/WP 03-10487
The feeding response of field populations of the subterranean termite, Coptotermes lacteus, to Pinus radiata wood blocks (50 x 40 x40 mm) treated with various combinations of non-toxic and odourless water-proofing materials based on natural high molecular weight esters (TimberTreatÒ) and a new water insoluble quaternary ammonium compound (‘anti-microbial’) is described. Treated wood blocks we...
J R J French, T Pynsent, M Susic
Experiences with environmental risk assessment within the Biocidal Products Directive
2005 - IRG/WP 05-50224-21
The Biocidal Products Directive (98/8/EC, the BPD) aims to authorize biocidal products based on risk assessment for both man and the environment. Active substances for wood preservation products and rodenticides were selected for the first list under the review program (Regulations EC 1896/2000 and EC 2032/2003) because several member states had experience with the evaluation and authorization of ...
P Blancquaert
Studies on the fungicidal effectiveness of a petroleum derived product as a creosote alternative
1986 - IRG/WP 3384 E
This work, appears first because of the necessity to find out a profitable use for a residual product of the petrol pyrolisis, and second, because the lack of high natural durability wood used until now-a-days to build posts and sleepers in creosote lacking countries. Our main objective was pointed to the characterization of this new product and to find out the effectiveness against the wood-destr...
A M Navarrete, M T De Troya