Your search resulted in 1208 documents. Displaying 25 entries per page.
Is there a need for re-sealing cut ends of envelope-treated softwood framing timber to protect against attack from Coptotermes spp. (Isoptera)?
2004 - IRG/WP 04-10524
The claim that Australian Coptotermes acinaciformis (Froggatt) do not appear to initiate attack on timber from the end grain, thereby negating the need for treating exposed cut ends of softwood framing material (35 x 90mm) which has a Tanalith™ T envelope, was investigated. Specimens of commercial Pinus radiata framing timber (untreated) and Pinus elliottii (untreated, envelope-treated) were pa...
M Lenz, J W Creffield, S Runko
Will political initiatives stop the use of preservative-treated wood in Sweden?
1990 - IRG/WP 3578
The Swedish government has initiated several investigations on how to reduce the use of different chemicals. Among these chemicals are creosote, arsenic, chromium and organotin. A special investigation was carried out concerning wood preservatives resulting in different proposals on how to reduce the use of preservatives and preservative treated wood. The most important proposals were an "environm...
J Jermer, M-L Edlund
A chemical and mycological evaluation of fused borate rods and a borate/glycol solution for remedial treatment of window joinery
1983 - IRG/WP 3225
The possibility of using fused borate rods (Impel Borpatron) and a borate/glycol solution (Boracol-40) for depot impregnation of window joinery has been examined in a co-operative project between The Swedish Forest Products Research Laboratory, The Swedish University of Agricultural Sciences and Prolignum AB. The fused Impel rod is a glassy rod composed of disodium octaborate which readily dissolv...
M-L Edlund, B Henningsson, A Käärik, P-E Dickèr
L-joint trials: Part 2: The relationship between colonisation by decay fungi and long-term performance
2002 - IRG/WP 02-20251
Many of the L-joint trials conducted at BRE were assessed during the early stages to establish the rate of colonisation by fungi, principally basidiomycetes. At that time, a system of assessment incorporating colonisation studies was proposed for inclusion within the European Standard EN 330 but was rejected for the final version of the standard. The long-term trials associated with the colonisa...
J K Carey
A method for the preliminary assessment of timbers for their treatability with preservatives under pressure
1977 - IRG/WP 3100
President Maurice Fougerousse has provided the following references to a IUFRO report, published in English, French and German, which may be of interest to IRG members:
'A method for the preliminary assessment of timbers for their treatability with preservatives under pressure', PANS Vol 23, No 2, 153 158, June 1977.
'Une methode d'evaluation preliminaire de l...
M Fougerousse
Interim report on the use of borate rods for the in-situ treatment of joinery
1980 - IRG/WP 3159
In the U.K. in recent years, it has been recognised that there is a major need for in-situ treatment of joinery at risk from or showing the early signs of decay. Several techniques have been developed to provide such a treatment, one of which is based on the insertion of anhydrous borate glass rods. The tests in hand are long term and this report is confined to the mycological isolation data from ...
D J Dickinson
A comparison of the leaching resistance of diammine-copper complexes and copper carbonate precipitated in wood
1997 - IRG/WP 97-30158
Previous studies have shown that during treatment of wood with ammoniacal copper solutions, both simple copper precipitates and diammine-copper complexes are formed. The objective of the present study is to determine the relative importance of both forms of copper, on such aspects as preservative leachability and biological performance. In the current experiment, the leachability of copper carbona...
Xiao Jiang, J N R Ruddick
Preservative effect of cellulose insulation material against some mould fungi and brown rot fungus Coniophora puteana in pine sapwood
1991 - IRG/WP 1484
The influence of mineral wool and loose-fill cellulose wool on biodeterioration of pine sapwood was studied. The test fungi were mould fungi Aspergillus versicolor, Cladosporium sphaerospermum, Penicillium sp. and Aureobasidium pullullans and brown rot fungus Coniophora puteana. Cellulose wool inhibited the growth of mould fungi on the face of wood contacted with insulation material at RH of 97 an...
H Viitanen
Effects of alkali treatment on some mechanical and chemical properties of creosote treated oaks
1991 - IRG/WP 2366
To date, there is a lack of information on the effects of chemical treatment on the performance of creosote preservative treated oak sleepers. This factorial experiment was designed to analyze three main effects: species (Quercus alba and Quercus rubra) creosote treatment (treated and untreated), and alkali (NaOH) soaking (0, 1, and 10 percent). The modulus of elasticity (MOE) and fiber stress at ...
P Chow, A J Reinschmidt, E J Barenberg, L C Chang
Lethal temperature for some wood-destroying fungi with respect to eradication by heat treatment
1984 - IRG/WP 1229
The lethal heat dosis as a function of temperature and time of exposure has been tested for mycelium and for wood infested by three strains of Serpula lacrymans and by Coniophora puteana, Poria monticola, Paxillus panuoides, Gloeophyllum trabeum and Gloeophyllum sepiarium. Even for Serpula lacrymans, which is well known for its sensivity to heat treatment, 30 min at 55°C were necessary to kill th...
M Miric, H Willeitner
L-joint trials: Part 3: Relative performance of a range of preservative products
2002 - IRG/WP 02-30292
Long-term trials using the L-joints described in BS EN 330 and AWPA Standard E9-97 have been in progress at BRE since 1982.
This paper records the current assessments of decay of L-joints in trials started between 1982 and 1994 with treatments applied to both Scots pine sapwood (Pinus sylvestris) and spruce (Picea sp.). Data are provided on a range of active ingredients including TnBTO, PCP, a...
J K Carey
Gas chromatographic determination of 1,8-naphthalimide, N-Hydroxy-1,8-naphthalimide (N,N-naphthaloylhydroxylamine) and the sodium salt of N-Hydroxy-1,8-naphthalimide
2003 - IRG/WP 03-20259
A number of naphthalimide (NI) derivatives are used as efficient laser dyes, in medicine or in scanning electron microscopy. Only N,N-naphthaloylhydroxylamine (NHA) has been shown to be an effective wood preservative against wood decay fungi and termite damage.
However, limited information is available concerning the analytical detection of NI-derivatives in treated timber. There is a clear need ...
E Melcher, F Green III
Occupant re-entry times following insecticidal remedial treatments of timber in dwellings
1995 - IRG/WP 95-50055
This work was carried out principally to obtain quantitative data on the aerial concentrations of permethrin and white spirit likely to arise following the remedial treatment of timber in buildings, using insecticidal formulations. Such data are needed to allow assessments to be made of the length of time buildings should remain unoccupied following such treatments prior to re-occupation, and the ...
R J Orsler, G E Holland, G M F Van Eetvelde
A technique for assessing the preventive efficacy against decay fungi of preservative treatments applied to wood
1988 - IRG/WP 2309
A method is described in which test blocks with envelope preservative treatments can be challenged by selected test fungi previously established on an untreated feeder block. The progress of the test fungus through the treated zone is monitored using novel baits or sensors inserted in holes drilled into blocks to within predetermined distances of the face being challenged. Preliminary results show...
J K Carey, A F Bravery
Potential toxicants for controlling soft rot in preservative treated hardwoods. Part 1: Laboratory screening tests using a filter paper technique
1977 - IRG/WP 290
Thirty-one miscellaneous formulations have been screened using a filter paper assay technique, for their efficacy in controlling the growth of Chaetomium globosum, Cephalosporium acremonium, and a mixed inoculum of finely ground soft-rotted wood obtained from preservative treated transmission poles. The formulations consisted of various organic compounds and inorganic preparations made from differ...
H Greaves
Remedial ground-line treatment of CCA poles in service. Results of chemical and microbiological analyses 6 months after treatment
1986 - IRG/WP 3388
CCA-treated poles in service with incipient internal soft rot were remedially treated by inserting borate rods, brushing with a boron/glycol solution and injecting boric acid paste, copper/creosote paste or a commercial product (DFCK paste). The spread of active chemicals in the treated zone as well as the change in microflora have been studied with time. After six months chemicals had spread to m...
B Henningsson, H Friis-Hansen, A Käärik, M-L Edlund
Termite Field Tests of Various Timber Species Treated with permethrin using supercritical carbon dioxide
2005 - IRG/WP 05-10560
Termite field tests were conducted on permethrin-treated Eucalyptus obliqua heartwood, Pinus radiata sapwood and P. radiata LVL. The permethrin was impregnated using either supercritical carbon dioxide (scCO2) or light organic solvent preservative (LOSP) systems. Comparative permethrin retentions were most accurately achieved in P. radiata sapwood, where no difference between impregnation systems ...
A Qader, L J Cookson, J W Creffield, D Scown
Bait box technique for remedial subterranean termite contro
1995 - IRG/WP 95-10115
The bait box technique, as described in this paper, was first used as a method to apply the dust toxicant, arsenic trioxide, to large numbers of aggregated subterranean termites. Over the last twelve years or so the technique has been refined, and in recent years, gained acceptance as an alternative subterranean termite control measure by members of the Australian pest control industry. This baiti...
J R J French, B M Ahmed, D M Ewart
Copper linoleate: A new low toxcity wide spectrum, heavy duty wood preservative
1995 - IRG/WP 95-30082
Copper linoleate, a "fixed" copper soap has been developed and evaluated in South Africa over a 30-year period. The initial product, an organic solvent based preservative has been tested in pine poles against termites and fungi. Results indiate that the product has performed well against existing heavy duty wood preservatives such as CCA and creosote in long term field trials (30 years). The paper...
D Conradie, P Turner, W E Conradie, A J Pendlebury, T Pizzi
Chlorothalonil: A new ground contact wood preservative
1992 - IRG/WP 92-3712
Extensive investigations have been conducted in recent years on the performance of chlorothalonil (tetrachloroisophthalonitrile) as a ground contact wood preservative. Efficacy information is presented on a soil block test with 11 Basidiomycetes, a fungus cellar evaluation, above-ground field testing against termites in Australia and Hawaii, and ground-contact field stakes installed in Florida (9 ...
P E Laks, T L Woods
Discoloration of pressure impregnated wood caused by Amorphotheca resinae
1990 - IRG/WP 1438
Amorphotheca resinae Parbery with the anamorph Cladosporium resinae (Lindau) von Arx & de Vries is a cosmopolitan fungus known from aviation kerosene, hydrocarbon contaminated soil and creosoted timbers. In Denmark it causes heavy discoloration on wood treated with waterborne chromate-containing preservatives e.g. CCA-oxide type. The teleomorph produces small spherical fruitbodies widespread o...
F Rune, A P Koch
Steam/hold/APM boron treatment - Treatability trials with green gauged radiata pine
1987 - IRG/WP 3439
Freshly sawn 100 x 50 mm radiata pine was green gauged, steam conditioned and preservative treated with a mixture of borax and boric acid using a modified Alternating Pressure Method (APM) treatment schedule. A 12 hour holding period between steam conditioning and treatment resulted in the necessary moisture loss and moisture re-distribution to facilitate treatment to NZ Timber Preservation Author...
P Vinden
Preservative-efficacy of boric acid-triethanol amine solution against wood-decay fungi
1994 - IRG/WP 94-30050
Laboratory preservative-efficacy tests were conducted using boric acid-triethanol amine (BTEA) solution in accordance with the JIS A 9201 (1991) test method excluding the standard weathering process. Sapwood specimens of Picea jezoensis or Fagus crenata to achieve nominal retentions of 0.40-41.2 kg/m³ of boric acid were exposed to Tyromyces palustris, Coriolus versicolor, Serpula lacrymans or Cha...
S Doi, M Mori, Y Mineki
Reinfestation of consolidated ancient wood by insects
1998 - IRG/WP 98-10290
Wooden artifacts are often attacked by wood-destroying insects. Therefore conservators have to stabilize numerous objects from such attack. Initially we studied the resistance of painting materials and consolidants on unaffected recent wood against wood-destroying insects (IRG/WP 97-10239). Further, we wanted an answer to the question: Are artifacts, formerly destroyed by wood-borers, reinfested b...
W Unger, A Unger, U Schiessl
A laboratory technique to measure the performance of preservative treated hardwoods in ground contact
1982 - IRG/WP 2172
A laboratory technique to measure the performance of preservative treated timber in ground contact is described. It uses partially sealed blocks of timber which are treated, leached and sawn into small stakelets for soil exposure in a fungal cellar. Performance is monitored by the loss of static bending strength with time, and a simple apparatus for measuring the deflection of a stakelet under a l...
E F Baines