Your search resulted in 3683 documents. Displaying 25 entries per page.
Wood-destroying Rhinotermitidae (Isoptera) in the oriental region
1984 - IRG/WP 1236
Species of the family Rhinotermitidae are important wood-destroying termites. From the Oriental zoogeographical region, 85 species of the family are reported of which some are wide spread and cause extensive damage to wood, wooden articles and other cellulosic products. The distribution, biology, ecology and pest status of the important wood-destroying species, in the Oriental region, are given in...
O B Chhotani
36 years of wood preservative tests in Tanzania
1992 - IRG/WP 92-3731
The performanee of major wood presevatives which are used widely commereially are given. These include creosote, CCA's and 5% Pentachlorophenol dissolved in heavy industrial diesel. Tests are conducted at three ecologically different using pine stakes. Results show that the striking performance of creosote and CCA's is noticeable at above 128 kg/m³ and 16 kg/m³ respectively....
K K Murira, P F Nangawe
A method of predicting the average life of field tests on preservative-treated stakes
1977 - IRG/WP 297
The paper presents an analysis of the results of completed field stake tests on untreated and preserved timber, and develops a method of predicting the average life of incomplete stake tests on wood preservatives from the failures that have occurred so far....
D F Purslow
The use of zirconium as an inert fixative for borates in preservation
2001 - IRG/WP 01-30256
Stand-alone borates have been used in internal protected situations as wood preservatives for about 60 years. They have not been deemed acceptable for external situations because of their leaching characteristics. Work carried out to reduce the leachability of borates has been reviewed briefly here, and a specific fixation agent based on zirconium has been tested in standard leaching and decay tes...
J D Lloyd, J L Fogel, A Vizel
Performance of chromated copper arsenate-treated aspen fence posts installed in Forintek's Eastern test plot from 1951 to 1963
1984 - IRG/WP 3272
Aspen poplar fence posts were pressure treated by the full cell process using three formulations of copper chrome arsenate wood preservative. A total of one hundred and fifty nine of the posts were installed in service in Forintek's Chalk River post plot from 1951 to 1962. During the 1982 general inspection of the post plot all 159 posts were still in service. A groundline inspection was ...
C D Ralph
Risk assessment and the approval of wood preservatives in the United Kingdom
1995 - IRG/WP 95-50040-23
An approval system operates in the United Kingdom (UK) for the regulation of wood preservatives. The regulatory authority uses a risk assessment approach to evaluate how far the potential for harm to people and the environment from wood preservatives is likely to be realised in practise, and hence the controls required for products to be, used safely. The evaluation for approval purposes also take...
R M Turner
Questionnaire: Facility for accelerated stake tests in unsterile soil
1981 - IRG/WP 2166
An acceptable name for this type of test facility has not yet been devised, but it has previously been referred to as a FUNGUS CELLAR or as a TROPICAL DECAY HOUSE. The attached pamphlet (What's New in Forest Research No.65) describes in broad terms the facility used for this purpose at FRI in New Zealand. Over the last two or three years several laboratories and commercial firms have inst...
J A Butcher
Biological control of blue stain on wood with Pseudomonas cepacia 6253. Laboratory and field test
1989 - IRG/WP 1380
Pseudomonas cepacia strain 6253 was tested as a biological control agent on wood samples under laboratory conditions, as well as in the field. In the laboratory this bacterium controlled blue stain on Pinus radiata, but field test were not totally satisfactory. However, after 2 months of field test, the test samples were 1/3 to 1/2 less stained then the control samples....
R Benko
Interaction mechanisms of F/Cr/As/B type preservative and wood
1981 - IRG/WP 3183
The paper reports results of investigations on the fixation of the components of a F/Cr/As/B preservative in wood and its lignin and cellulosic components....
N Ermush, I Andersone
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation (Introductory letter)
1981 - IRG/WP 3184
H Willeitner
Copper binding capacity of modified wood flour
1992 - IRG/WP 92-3709
Wood flour was modified by reaction with oxidising agents and CCA preservative. The copper chromium and arsenic were removed from the CCA treated wood flour by an acid leaching procedure. The modified wood flours were allowed to react with copper acetate solution and the level of copper fixation achieved was determined. The modified wood flours had greater affinity for copper ions present in solut...
N C Milowych, W B Banks, J A Cornfield
Wood preservation research at the Technical University in Zvolen - Slovakia
2004 - IRG/WP 04-10538
Presented paper gives basic information about wood protection in Slovakia and research in the field of wood preservation at the Technical University in Zvolen – the Faculty of Wood Sciences and Technology. The degradation processes in wood and wooden composites caused by fungi,
environmental factors and fire, the identification of these processes, the protection of wood with fungicides and ot...
L Reinprecht
Notes on the resistance of tropical woods against termites
1985 - IRG/WP 1249
This paper deals with a descriptive account on the effect of experimental methods, matrix, species of termites, solid wood and wood extract on the resistance and repellency of woods against three species of termites, i.e. Cryptotermes cynocephalus Light; Coptotermes curvignathus Holmgren and Reticulitermes lucifugus (Rossi). Two methods of experiment were used, the Forced Feeding Test and the Feed...
Nana Supriana
Evaluation of a solid remedial wood preservative containing boron and fluorine
1993 - IRG/WP 93-30022
The fungicidal and termiticidal effectiveness of a new rod form of diffusible remedial wood preservative, containing disodium octaborate tetrahydrate/sodium fluoride and marketed as Polesaver Rod, was evaluated in laboratory tests against three species of basidiomycete fungi (Coniophora olivacea, Pycnoporus coccineus, Perenniporia tephropora) and two species of subterranean termites (Coptotermes a...
K J McCarthy, J W Creffield, L J Cookson, H Greaves
Assessment of wood preservation facilities in Canada
1989 - IRG/WP 3557
This document sets out an assessment procedure for the current status of the wood preservation industry in Canada in relation to the Technical Recommendations (TR) documents for the Design and Operation of Wood Preservation Facilities published by the Government of Canada in April 1988. A questionnaire has been prepared in consultation with industry and the Canadian Institute of Treated Wood. An a...
G Das, V N P Mathur
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation
1981 - IRG/WP 3185
H Willeitner
HCB - a new preservative combination for wood pole maintenance
1996 - IRG/WP 96-30122
New combination of heavy creosoted boron (HCB) applied on hardwood and softwood logs at different moisture content revealed successful diffusion of boron in all sapwoods within 7 days and in all sapwoods plus hardwoods within 15 days. The new cost effective paste sterilizes wood through diffusion and suitable for pole maintenance at groundline and above groundline e.g. cut ends, drilled holes, woo...
A K Lahiry
Isolation and identification of the fungal flora in treated wood
1976 - IRG/WP 144
J F Levy
Restriction for use and waste management for pressure treated wood - The current situation in Norway
2001 - IRG/WP 01-50175
The Norwegian Environmental Authorities have this winter sent out a draft on restrictions in production and use of heavy metals in preservative treated timber. If it is passed, it will lead to drastic changes in the use of preservatives in Norway from this autumn. The environmental authorities and the preservative industry are both at present discussing waste management for CCA and creosote treate...
F G Evans
Literature survey on the permanence and distribution of salt-type wood preservatives
1969 - IRG/WP III 1B
The objective of this survey is generally to review some of the more important published work dealing with the distribution and permanence of salt-type waterborne wood preservatives in treated timber. The survey is limited to the major chrome-containing formulations and the classification system proposed by Becker (1964) has been adopted throughout.
CK - chromium, copper (copper, chrome); CKA - c...
Anonymous
Methods of treatment of wood preservatives. The selection of appropriate preservation process with particular reference to mixed tropical forest resources. A key address
1982 - IRG/WP 3177
All wood is biodegradable. Many timber species have, however, sufficient natural durability to permit their use, particularly in protected situations, without any special precautions. Many others, of course, are readily attacked by insects and where there is sufficient moisture and air, by wood-decaying fungi. It is these timber species which benefit most from treatment with wood preservatives. Ev...
C R Levy
Spot-tests for TnBTO and AAC preservatives
1984 - IRG/WP 3279
Nineteen indicator systems were examined as potential alternative spot-tests for preservative penetration in TnBTO- (bis-tributyltin oxide) or AAC- (alkyl ammonium compound) treated wood. Results indicated phenylfluorone as an acceptable alternative to pyrocatechol violet for assessment of TnBTO, and cobaltous thiocyanate or a bromocresol green/quinine sulphate mixture as alternatives to bromophen...
D V Plackett
Waterborne silicones as wood preservatives
1995 - IRG/WP 95-30062
For more than thirty years silicones are used as water repellents for masonry. Their excellent properties make them also attractive for non-mineral substrates like wood. Although it was always thought that silicones are not able to perform on wood, a new type of aqueous silicone materials proofed the opposite: Excellent water repellency and astonishing durability were achieved. This paper describe...
R Hager
Restrictions or environmental taxes as regulatory means - How will they influence the use of pressure treated wood?
1998 - IRG/WP 98-50101-28
In all the Nordic countries except Norway, we have environmental restrictions on the use of pressure treated wood. In Norway we expect environmental taxes on a large number of various products in 1998/99 - probably also pressure treated wood with one or more of the heavy metals copper, chromium and arsenic.
The paper will discuss how this can influence the use of pressure treated wood and cause a...
F G Evans
Thermotolerant mould growth in dehumidifier kilns in New Zealand
1996 - IRG/WP 96-10169
Growth of Aspergillus fumigatus and Paecilomyces variottii is common on wood dried in dehumidifier kilns that operate within a temperature range of 35-55°C. Aspergillus fumigatus causes an unacceptable blue / grey discolouration of the woods surface and prolonged exposure to spores during handling of mouldy wood can cause health problems amongst timber workers. A survey of dehumidifier kiln opera...
R N Wakeling, J G Van der Waals