Your search resulted in 274 documents. Displaying 25 entries per page.
Laboratory trial to identify potential in-forest treatments to control fungal pre-infections of radiata pine logs
2000 - IRG/WP 00-30220
Development of fungal infections of radiata pine logs by wood degrading fungi commences immediately after tree felling. In general, subsequent antisapstain treatments are unable to control fungal degrade on logs where the pre-treatment log storage time exceeds 2-5 days. However, use of an in-forest treatment of logs may be advantageous to log exporters to control fungal pre-infections during the p...
D R Eden, B Kreber, R N Wakeling, J G Van der Waals, C M Chittenden
Losses of preservatives from treated wood during service. Results from a questionnaire
1994 - IRG/WP 94-50031
From environmental as well as from performance point of view it is of interest to know how much of the preservatives in treated wood that is leached out or evaporated from the wood during service. Many laboratory studies are carried out on leaching from small samples in distilled water or water with different pH. These studies give a good picture of the relative leaching from wood treated with dif...
M-L Edlund
Blue stain in timber in service. Results of further IRG collaborative tests to compare different artificial weathering systems
1981 - IRG/WP 2146
The previous work described in Document No IRG/WP/286 examined 3 preservatives (1% phenyl mercury succinate - PMS, 5% pentachlorophenol - PCP and 1.5% Preventol A4 - PA4) subjected to 5 different artificial weathering systems (BAM Xenotest, Cuprinol Marr, EMPA Xenotest, Gori Atlas and PRL Marr) and after natural weathering at 5 sites (BAM, Cuprinol, EMPA, Gori and PRL). Results showed good correla...
A F Bravery, D J Dickinson
Collaborative field trial out-of-ground contact
1982 - IRG/WP 2179
At the 12th meeting of the IRG in Sarajevo, Yugoslavia it was decided after considerable discussion that the best way to proceed with the work of the subgroup was to centre it around a co-operative field trial based on the L-joint test detailed in IRG/WP/2157. At the same time it was agreed that interested laboratories would also conduct their own methods, particularly the German planner test and ...
D J Dickinson, A F Bravery, J K Carey
Surface retentions of PCP, TCMTB and MTC obtained during a field trial of antisapstain formulations
1993 - IRG/WP 93-20002
Formulations containing NaPCP or TCMTB and MTC were included as reference products in a recent field trial of antisapstain formulations in Queensland. Retentions of these actives on the surface of treated sawn Pinus elliottii were monitored by ultrasonic solvent extraction of excised samples and analytical determination by high performance liquid chromatography. Distribution of actives with depth ...
D E Ferlazzo, M D Needham, M J Kennedy
Blue stain in service on wood surface coatings. Part 1: The nutritional requirements of Aureobasidium pullulans
1992 - IRG/WP 92-1556
The nutritional requirements of Aureobasidium pullulans was examined with regard to nutrient sources that are potentially available in fresh and weathered wood. The study was designed to determine how far wood cell wall components need to be broken down during weathering before they provide a useful nutrient source for Aureobasidium pullulans. Various carbon sources were tested, with eight differe...
P R Sharpe, D J Dickinson
Settlement of fouling organisms on CCA-treated Scots pine in the marine environment
1997 - IRG/WP 97-50094
As part of an EU project to investigate the effects of CCA loading on non-target marine fouling animals, exposure panels of Scots pine treated to 12, 24 and 48 kgm-3 CCA and untreated controls were submerged at seven coastal sites (Portsmouth, UK: Kristineberg, Sweden: La Tremblade (2 sites), France: Ria Formosa, Portugal: Sagres, Portugal: Athens, Greece). Inspections were made at 6 and 12 months...
C J Brown, R A Eaton
Service life of outdoor wooden constructions. Expectations of private house owners in Sweden
2001 - IRG/WP 01-10401
Wood is traditionally used in indoor as well as outdoor applications. However, if not kept dry, wood is easily attacked by wood degrading micro-organisms. Thus the service life is heavily affected by construction design, choice of wood and wood treatment. For most constructions there is an expected service life. The expectations concerning wooden constructions and what kind of wood is chosen to fu...
M-L Edlund, J Jermer
An environmental aspect relating to leachability of CCA from hardwood and softwood poles in Bangladesh
2001 - IRG/WP 01-50167
Leachability of CCA and the service performance of 8 softwood and 5 heartwood poles in service after 5 to 17 years in Bangladesh have been studied. The study included determination of retention of CCA-C in outer 6 mm zones at groundline (GL) and above groundline (AGL) along with the observation of decay and conditions of soils. The mean leaching of CCA-C derived from retention differential at GL a...
A K Lahiry
A field trial of water repellents as anti-sapstain treatment additives
1987 - IRG/WP 3417
The assessment of water repellents as anti-sapstain treatment additives has been included in a recent FRI research programme investigating improved surface protection of New Zealand Pinus radiata. Laboratory work has shown variation in water repellent effectiveness with chemical type and subsequently a field trial was established to examine the performance of selected water repellent/anti-sapstain...
J A Drysdale, D V Plackett
Quality assured wooden sidings - Criteria, performance evaluations and current status
2000 - IRG/WP 00-20216
Quality assured wooden sidings were brought to the Swedish market in 1998. The system was worked out during a six year period in a close cooperation between the sawmill industry and several research institutes. Centuries of use have given a wealth of experience of spruce boards as a siding material, showing that it works well in most cases but also that its longevity is highly variable, depending ...
F Englund, I Johansson, J Ekstedt, R Nussbaum
Performance of Tuff Brite C™ and other formulations against blue-stain, mold and brown-stain in freshly-sawn rubberwood (Hevea brasiliensis) in the humid tropics of Peninsular Malaysia
1997 - IRG/WP 97-30163
The relative anti-sapstain and anti-mold efficacies, including brown-stain development in freshly-sawn rubberwood (Hevea brasiliensis) in the Malaysian tropics, between selected water-based product concentrations of formulations Tuff Brite CTM without/with added Borax (at 1.5/0, 1/1.5, 1.5/1.5 and 2%/1.5%), PQ8TM without/with added Borax (at 2.5/0, 1.5/1.5, 2/1.5 and 2.5%/1.5%) and NeXgenTM/NeX-Br...
A H H Wong, T L Woods
Laboratory Evaluation and Field Trial of Chlorothalonil and Copper-based Preservatives and Leaching Performance of Copper in Copper Treated Wood
2002 - IRG/WP 02-30279
Soil block test and field trial of some Chinese plantation wood species pine and poplar treated with chlorothalonil formulations and copper-based preservatives such as ACQ-B and copper citrate (CC) were conducted. The results of soil block test indicated that chlorothalonil formulations and ACQ-B as well as CC are very effective for controlling the 2 fungi species Corious versicolor and Poria plac...
Mingliang Jiang, Ping Wang, Chungen Piao, Zhaobang Li, Quan Lu, Lei Liu
Diffusion modeling of inorganic wood preservative leaching in service
2005 - IRG/WP 05-50224-5
To evaluate the potential environmental and health implications of leaching of inorganic wood preservatives in service under different conditions, there is a need for a predictive model that provides estimates of the rate and extent of leaching over a wide range of product dimensions and exposure conditions. In this paper, we show that the leaching behavior of inorganic preservative components fr...
L Waldron, P A Cooper, Y T Ung
Artificial weathering as an aid to assessing the effectiveness of chemicals for preventing blue stain in service - a co-operative study
1984 - IRG/WP 2215
The paper reports co-operative studies carried out within Working Group II of the International Research Group on Wood Preservation to assess the effects of different artificial weathering systems on the performance of fungicides to control blue-stain in service. It has been shown that Atlas, Xenotest and Marr equipments operated according to particular standard schedules can give essentially the ...
A F Bravery, D J Dickinson
Remedial treatment of creosoted railway sleepers of redwood by selective application of boric acid
1980 - IRG/WP 3134
An ideal preservative for remedial treatment must primarily be characterized by two requirements. First, it must have an ability to diffuse and distribut evenly into the wood and secondly, it must be fixed properly so that it does not leach out too fast. However, these two characteristics conflict with each other, and the choice of preservative must of necessity be a compromise. Wood preservatives...
C Bechgaard, L Borup, B Henningsson, J Jermer
Preservative treatment of rubber wood (Hevea brasiliensis) to increase its service life
2005 - IRG/WP 05-40320
Rubber wood (Hevea brasiliensis) possess excellent properties for interior designing, wood working and furniture making. But it is very much susceptible to sap stain and mould fungi which decreases the service life. For profitable uses , it is necessary to increase the service life of rubber wood. To protect the rubber wood from wood degrading agents, the sawn timber were treated with Borax – b...
K Akhter
Ten Year Marine Borer Exposure Trial of Chlorothalonil and Emulsified Preservatives in Australia
2003 - IRG/WP 03-30314
Results of a ten-year marine exposure trial at Townsville and Port Stephens are presented. Sawn Pinus radiata and natural round Eucalyptus obliqua specimens were treated with preservatives including creosote (HTC), pigment emulsified creosote (PEC), chlorothalonil, and the oil emulsions of CCA called PROCCA and HYCON. Basic zinc chloride treatment was also exposed at Townsville. Some of the findin...
L J Cookson, D Scown
Deterioration of wood viewed from iron nail
1991 - IRG/WP 2368
Deterioration of nail was graded by a five - rank numerical - rating. The rating of nail moisture content and decay of wood were inspected in a mortal-wall of 34-year-old house. The wood was mostly in decay, when the rating of the nail was above about 4, and the moisture content was above about 20%. Nailed wood specimens kept in several humidity room of 20°C for 4 years showed that the rating of ...
H Imamura
Possibility and problems of characterizing treated wood after service with regard to disposal
1993 - IRG/WP 93-50006
For the disposal of wood waste under ecological conditions, information about its hazardous potential and the logistic aspects for its handling is needed. The main criterion to evaluate the hazardous potential besides the determination of the type and quantity of active ingredients in the wood will be the degree of mixture with different treated or untreated timber. Assortments can be homogeneous ...
A Voss, H Willeitner
Remedial ground-line treatment of CCA poles in service. A progress report after 28 months' testing
1988 - IRG/WP 3481
Remedial treatments of CCA-treated poles in service with incipient soft rot were carried out with boron rods, boron/glycol solution, boric acid paste, copper/creosote paste and a commercial product (DFCK paste) respectively. The micro-flora before remedial treatment and 6 months after as well as the spread of chemicals in the poles were reported in Document No: IRG/WP/3388. In this progress report...
B Henningsson, H Friis-Hansen, A Käärik, M-L Edlund
Application of non-destructive techniques (durometric and ultrasonic) to evaluate the degradation of woods in service by Gloeophyllum trabeum
2001 - IRG/WP 01-20220
In order to establish the degree of degradation of wood used in construction, it is necessary to employ non-destructive methods (ultrasonic, durometric, densitometric). In this study, ultrasonic and Pilodyn durometric techniques have been applied to try to establish parameters of relationship between the values obtained by both, for their immediate application to wood in service. As a method of re...
M T De Troya, L Palaia, A Navarrete, V Galvañ, R Molina, A Guijarro, J Camacho
Service Life Prediction of Wood Claddings by in-situ Measurement of Wood Moisture Content
2004 - IRG/WP 04-20304
The Danish Technological Institute is in co-operation with industry partners running a project aiming at predicting the service life of different wood protecting systems.
The project focuses on examining the moisture reducing effect of different wood claddings and the ability to maintain the appearance of the surfaces, when the wood is used in service class 3.
A façade construction is exposed t...
B Lindegaard, N Morsing
Suitability of propiconazole (R 49362) as a new-generation fungicide
1989 - IRG/WP 3529
Propiconazole (R 49362), an anti-fungal triazole-compound of Janssen Pharmaceutica, has been extensively tested to determine its potential use as a wood preserving fungicide. Various tests in both private laboratories and official institutes indicate a good activity against Basidiomycetes (brown and white rot) and Ascomycetes (blue stain-in-service). The active ingredient seems very resistant to w...
A R Valcke
The potential for reuse of treated wood poles removed from service
1993 - IRG/WP 93-50001-18
Poles removed from service in Ontario and Quebec, Canada were characterized by age, wood species, preservative type, residual preservative, dimensions and condition. Based on this charactarization, the potential for reuse as round poles or posts, sawn posts, timbers and lumber, cedar roof shingles and firewood was assessed. A pilot study was conducted to evaluate the recovery and grade of lumber p...
P A Cooper