Your search resulted in 1309 documents. Displaying 25 entries per page.
Detection of termite attack in wood using AE monitoring
1990 - IRG/WP 2355
An acoustic emission (AE) monitoring method for detecting termite activity in wood was applied to lumber of 3 by 3 cm to 10 by 10 cm square, 1 m long. Furthermore, the propagation of AEs due to the feeding activities of termites in the specimens and the locations of AE sources were analyzed. Also discussed was the feasibility of the method applied to posts out in the field of subterranean termites...
Y Fujii, M Owada, M Noguchi, Y Imamura, M Tokoro
Termite Response to Agricultural Fiber Composites: Hemp
2005 - IRG/WP 05-10548
Industrial hemp, Cannabis sativa, is a fiber usable in manufacture of nutritional products, rope, textiles, paper and building products. Due to the illicit recreational uses of Cannabis sativa varieties with high tetrahydrocannabinol content (marijuana), hemp is not grown commercially in the United States. However, it is grown in many other nations, and has been proposed as a replacement for sugar...
J K Grace
A behavioral assay for measuring feeding deterrency of a slow-acting biocide, A-9248, against the Formosan subterranean termite (Isoptera: Rhinotermitidae)
1988 - IRG/WP 1366
Concentration-dependent feeding deterrency of a slow-acting compound, A-9248 (diiodomethyl para-tolyl sulfone) was studied in a choice test against the Formosan subterranean termite, Coptotermes formosanus Shiraki. A-9248 was a feeding deterrent at concentrations ³8,000 ppm. Initially, Coptotermes formosanus fed on wood treated with 1,000-6,000 ppm A-9248 but learned to avoid the treatment as a r...
N-Y Su, R H Scheffrahn
Investigation of microwave as a means of eradicating dry rot attack in buildings
1992 - IRG/WP 92-1545
A microwave-apparatus developed for treatment of building-structures infested by dry rot was tested in the laboratory. The test-conditions simulated treatment of either infested timber or infested brickwork. Sawdust samples, both wet and dry, infested by viable mycelium of Serpula lacrymans were packed in glass-tubes. The tubes were then placed in the middle of either 20 cm thick wooden beams or 3...
C Kjerulf-Jensen, A P Koch
An evaluation of CCA, CCB and CCP preservatives using a "sandwich test"
1991 - IRG/WP 2370
The last two years has seen some important changes in standards and preservative types used in Scandinavia, which have led to a wider choice for specifiers. In order to identify those treatments suitable for replacement or reinforcement of decayed constructional timbers, it was felt necessary to modify the standard EN 113 test. Impregnated blocks were sandwiched between two untreated blocks, previ...
A P Koch, L B Sheard
Chemical Analysis of Southern Pine Pole Stubs Thirty-Nine Months Following Treatment with Three Methylisothiocyanate-Based Fumigants
2004 - IRG/WP 04-30349
Agricultural fumigants have been commercially used in the United States for over 20 years to control internal decay in utility poles and other wooden structures. Of the four fumigants which are currently used in the remedial treatment of utility poles, three are based on methylisothiocyanate (MITC) as being the principal fungitoxic component. Two of these MITC-based fumigants, liquid metham sodi...
R J Ziobro, J Fomenko, D J Herdman, J Guzzetta, T Pope
The first two years of an area wide management program for the Formosan subterranean termite in the French Quarter, New Orleans, Louisiana
2000 - IRG/WP 00-10357
The Formosan subterranean termite, Coptotermes formosanus, is a serious pest in several parts of the world and is the most destructive insect in Louisiana. The density of the Formosan subterranean termite in the French Quarter, New Orleans, Louisiana, USA is very high. A large area pilot test for area wide management of this insect was begun in 1998 in the French Quarter to reduce densities of ter...
D R Ring, A L Morgan, W D Woodson, A R Lax, X P Hu, E D Freytag, L Mao
Model of termite distribution in Portugal - Follow-up
2003 - IRG/WP 03-10470
In Portugal, subterranean termites of the genus Reticulitermes are indigenous and a well-established pest of wood in service. Mapping their distribution has therefore become important. A field sampling campaign was established along a North-South transect based on 50x50 km cells (Universal Transverse Mercator grid system, UTM). A variety of typical habitats, ranging from forest sites of Eucalyptu...
T Nobre, L Nunes
Preliminary field and laboratory findings regarding the efficacy of a novel anti-marine wood borer agent
2000 - IRG/WP 00-10380
Blocks of sapwood of Pinus nigra were treated by vacuum impregnation with Biocide A to retentions of 0.5, 1 and 2 kg m-3. Similar blocks were vacuum-pressure impregnated with CCA to retentions of 2, 24 and 38kg m-3. The blocks were exposed subtidally in Mourilyan Harbour (Queensland, Australia). After 5 and 10 months exposure, blocks were removed, examined for superficial signs of attack by wood b...
A Praël, S M Cragg, R A Eaton
Termite physical barriers: Update on retrofitting Granitgard around 'mock-up' buildings after three years
1995 - IRG/WP 95-10118
This field experiment was installed three years ago (March 1992) to evaluate the effectiveness of Granitgard, the commercial name of a grade of crushed granite aggregate or "screenings", as a physical termite barrier when retrofitted around 'mock-up' buildings. The field site is located at Walpeup in the semi-arid mallee region of north-west Victoria (360 km from Melbourne), and ...
B M Ahmed, J R J French
Preference of the Formosan subterranean termite for wood previously damaged by conspecifics
1988 - IRG/WP 1338
In a laboratory choice test, groups of termites from five colonies of Coptotermes formosanus Shiraki were presented with wood blocks which had sustained previous termite damage: 1) by nestmates, 2) by conspecifics from another colony, 3) by another termite species, Reticulitermes virginicus Banks, and 4) no damage. Coptotermes formosanus preferred wood previously damaged by conspecifics over that ...
J P La Fage, K S Delaplane
Work programme of CEN/TC 38 (April 1999) and European publications
1999 - IRG/WP 99-20165
Scope of the CEN/TC38: Standardization of the characteristics of natural or conferred durability of wood and its derived materials against biological agents, including the characteristics of protection products and associated processes to obtain this durability. This applies in particular to: - the identification of hazard classes-, - the test methods (wood preservatives and treated wood and wood ...
R Hüe
A Soil Bed Test of the Effect of CCA Penetration on the Performance of Hem-fir Plywood
2004 - IRG/WP 04-30332
An accelerated decay test was set up to compare the performance of CCA-treated Western hemlock/amabilis fir plywood treated to meet the preserved wood foundation (PWF) retention standard with various patterns of preservative penetration. Short lengths of treated plywood and comparable untreated material were installed in a soil bed. After eleven years of exposure, the CCA treatments were all sou...
P I Morris, J K Ingram
Survey of maintenance management of a residence
2001 - IRG/WP 01-10405
The following points were clarified from the responses to the questionnaire. Termite damage was most common in the bathroom, washroom, and entrance, in that order. Termite damage was most commonly found beneath floors, followed by floor surfaces, and inside walls, in that order. Damage in framing was minimal. Damage in all structural components was most common in the Kyushu region, with the most s...
Y Yamaguchi, M Azuma, Y Hikita, K Nishimoto
Chemical, physical and biological factors affecting wood decomposition in forest soils
2003 - IRG/WP 03-20281
Organic matter (OM) decomposition is an important variable in determining the potential of forest soils to sequester atmospheric CO2. Studies using OM from a particular location gives site-specific decomposition information, but differences in OM type and quality make it difficult to compare results among soils and forest ecosystems. By using a “standard” OM in decomposition studies, OM qual...
M Jurgensen, P Laks, D Reed, A Collins, D Page-Dumroese, D Crawford
The use of a physical field model to study the effects of remedially treated timber on the growth of perennial ryegrass (Lolium perenne) and rye (Secale cereale), and the accumulation of toxic preservative constituents in Lolium perenne
1995 - IRG/WP 95-50040-02
Low cost laboratory model systems can be used to give relatively rapid indications of the environmental effects of preservative treated timber in soil contact. This paper details the effects of remedially treated timber on the growth of crops of Lolium perenne and Secale cereale seeded on soilbeds of different texture in close proximity to remedially treated creosoted pole sections. Lolium perenne...
D C R Sinclair, G M Smith, A Bruce, H J Staines
Bending creep test of plywoods under long term exposure to fungal attack
1981 - IRG/WP 2163
Bending creep test and decay test were coupled in order to evaluate the durability of structural plywoods and preservative efficacy. Experimental blocks, 5.0 x 1.2 cm² section x 35.0 cm length, were impregnated with distilled water and inoculated with mycelial fragments of test fungus. Polyethylene bags stretched with metal frame were used as decay chambers. The chambers containing inoculated blo...
M Takahashi
Biological control of sapstain fungi in wood
1996 - IRG/WP 96-10158
Sapstain fungi can cause serious damage to wood and wood products, resulting in a significant economic loss for the wood products industry. The purpose of the present investigation was to determine whether the sapstain in wood caused by sapstain fungi could be biologically controlled. Biological control of sapstain fungi in wood was demonstrated in field trials with nonpigmented isolates of Cerato...
S C Croan
Termites in Eastern Canada: A brief review and assessment
1987 - IRG/WP 1333
The distribution of termites in Canada is reviewed, with particular emphasis on the eastern subterranean termite Reticulitermes flavipes (Kollar) in Ontario province. Municipal and provincial termite control programs are discussed and current treatment practices are described. Previous research on Reticulitermes flavipes in Ontario is briefly reviewed, with reference to a number of unpublished rep...
J K Grace
The shower test method. A leaching test for assessing preservative losses from treated timber under simulated open storage conditions
1993 - IRG/WP 93-50001-04
In the late 1980's against the background of increasing environmental concern a laboratory based accelerated leaching test method for assessing preservative losses-from stored, treated timber was developed by the Dutch organisation for applied Scientific Research (TNO). This test method quantifies the amount of specific preservative components which leach from treated timber under simulat...
J B G A Havermans, W J Homan, M J Boonstra
Assessing the performance of wood preservatives from biological tests - the European approach
1994 - IRG/WP 94-20040
The impetus for the European Standardisation Committee to undertake the development of a performance standard for characterising the effectiveness of wood preservatives from biological tests, lies in the Construction Products Directive. This is effectively the European Community law which provides the basis for Construction Products to be traded across all member states without technical or regula...
A F Bravery
Effect of treatment process on performance of copper-chrome-arsenate. Part 2: Field stake tests
1995 - IRG/WP 95-40046
Pinus radiata sapwood stakes 20 x 20 x 400 mm³ were treated with CCA Type C using a range of concentrations and three treatment processes; Bethell, Lowry and Rueping. Preservative retention was determined by chemical analysis of treated material. Following fixation stakes were installed in a randomised plot in the Whaka graveyard located on the FRI campus. Stakes were inspected at yearly interval...
M E Hedley, J Anderson, J B Foster, B E Patterson
Leaching results of shower test on L-joints with boric acid, bifluoride and TBTO rods
1995 - IRG/WP 95-50051
As part of the EC-project "Improvement of a local preservation process for wood products with reduced environmental impact", TNO has performed a leaching test on L-joints treated with pills with boric acid (Defence corner), bifluorides (Woodpil 55) and TBTO (Woodcap). The L-joints were exposed in an adapted shower test during 10 days, using 70 liters of water per day. The experiment is designed to...
P Esser, M J Boonstra, W L D Suitela, A J Pendlebury
Estimation of the population of a sound colony of Coptotermes lacteus (Froggatt)
1988 - IRG/WP 1353
Selecting an area with a high termite hazard is deemed essential in locating field sites in order to screen potential termiticides and wood preservatives. Yet, quantifying termite populations in such sites remains imprecise. There are major problems associated with estimating populations of termites in mound colonies (either free-standing or in trees), and these are briefly discussed. In this pape...
D M Ewart, J R J French
Soft-rot problems with treated hardwoods: A paper for discussion and establishment of a programme of work
1974 - IRG/WP 331
At the 5th meeting of IRG in Lahti (June 1973) it was decided that an ad hoc group should be formed to study these problems. It was decided that it's activity could be usefully directed in two main areas; a) in the encouragement and direction of existing research in this field, and b) in the organising of a collaborative field trial involving interested parties using locally important har...
D J Dickinson