Your search resulted in 37 documents. Displaying 25 entries per page.
Development of a disinfection treatment for oak logs to be imported from the USA
1984 - IRG/WP 3283
The European veneer industry depends greatly on oak supplies from the USA. To prevent the accidental introduction of the American Oak Wilt Disease (Ceratocystis fagacearum) into the member states of the EC, a disinfection treatment was developed for oak logs under consideration of the technical requirements of veneer production. Laboratory experiments and field trials in Germany and in the USA sho...
W Liese, M M Ruetze
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
A study on the effectiveness of didecyldimethylammonium chloride to protect wood from attack by termites
1993 - IRG/WP 93-30009
A laboratory bioassay was conducted on the ability of didecyldimethylammonium chloride (DDAC) to protect Pinus radiata D.Don wood specimens from attack by two of Australia's most economically important species of subterranean termite, Mastotermes darwiniensis Froggatt and Coptotermes acinaciformis (Froggatt). Sapwood specimens of Pinus radiata, treated to achieve nominal retentions of 0.5...
J W Creffield
A quantitative weathering study of wood surfaces modified by chromium VI and iron III compounds
1989 - IRG/WP 2330
Thin veneers of Pinus radiata were treated with dilute aqueous solutions of chromium VI and iron III compounds and exposed to natural weathering for 35 days. Zero-span tensile strength and weight losses of treated veneers were compared with losses observed in untreated specimens In a study designed to demonstrate the applicability of strength and weight loss measurements to the rapid quantitative ...
P D Evans, K J Schmalzl
A field evaluation of modified and unmodified alkylammonium compounds
1987 - IRG/WP 3436
Laboratory soil block studies of alkylammonium compounds (AAC's) at Forintek and other research establishments have shown that they can prevent decay by standard wood-destroying fungi. Their performance in field tests, however, has been disappointing. Following investigation of possible causes for this poor field performance, stakes treated with modified AAC's were installed at W...
J N R Ruddick
A 53-year old field trial to evaluate the performance of a range of chemical treatments on eucalypt poles
1989 - IRG/WP 3526
Hardwood pole stubs of Eucalyptus maculata, Eucalyptus pilularis, Eucalyptus saligna and Eucalyptus paniculata were examined for termite attack and fungal decay after 53 years in ground contact. The trial compared eight different chemical treatments with untreated pole stubs of the four species investigated. Untreated Eucalyptus paniculata, a Class I durability species, performed particularly well...
R S Johnstone, R A Eaton
An immunoassay for benzyldimethyldodecylammonium chloride, a multipurpose disinfectant and fungicide
1997 - IRG/WP 97-30149
A competitive enzyme-linked immunosorbent assay (ELISA), based on polyclonal antibodies, was developed to measure benzyldimethyldodecylammonium chloride (BDDAC). The anti-BDDAC polyclonal antibodies recognized free BDDAC in an indirect competitive ELISA. The detection limit. based on the 20% inhibition (IC20), was 0.18 µg/ml and the 50% inhibition (IC50) was 1.1 µg/ml. The antibodies recognised ...
J Bull, A N Serreqi, Tao Chen, C Breuil
Effect of soil chemistry and physical properties on wood preservative leaching
1998 - IRG/WP 98-50111
When treated wood is placed in contact with soil, complicated mass transfer and chemical reactions occur which causes the preservative components to leach from the wood. There are several factors that are known to affect the amount of chemical leached from wood. These are properties of the preservative and carrier, preservative retention, degree of fixation, exposure time, grain orientation, surfa...
Joan-Hao Wang, D D Nicholas, L S Sites, D E Pettry
The influence of cement and calcium compounds on the performance of CCA preservatives
1983 - IRG/WP 3221
The influence of cement and calcium compounds on the durability of untreated and CCA treated wood is considered. Calcium compounds were found to reduce the toxicity of a CCA preservative to a soft rot fungus at copper to calcium ratios of 1:1 and 1:10 using a cellulose filter paper technique. Further studies are outlined and some possible mechanisms by which cement and calcium compounds may affect...
R J Murphy
Alkyl dimethyl benzyl ammonium chloride: toxicity to Coniophora puteana when formulated in water and organic solvent
1986 - IRG/WP 2250
Results from agar block tests using Coniophora puteana demonstrate that the biological activity of alkyl dimethyl benzyl ammonium chloride is affected by the nature of the carrier solvent in which it is applied. In contrast to some earlier work, an alkyl ammonium compound in organic solvent formulation was identified that had significantly greater activity than its aqueous equivalent. A simple sol...
D P Blow
Adsorption of ACQ components in wood
2010 - IRG/WP 10-30522
To investigate the chemical adsorption capacity of copper-monoethanolamine (Cu-Mea) components on wood, the Na+ cation exchange capacity (CEC) of red pine (Pinus resinosa Ait.) was determined and compared to the adsorption capacity of free Mea and Cu-Mea complexes. The CEC increased with increasing pH. Free Mea adsorption as a function of pH followed the sodium adsorption curve except at pH over 9...
Myung Jae Lee, P Cooper
Methylene Chloride compared with white spirit as a treatment solvent for wood preservation – results from decay and termite studies
2013 - IRG/WP 13-30611
Non-aqueous solvents have a long history in the treatment of wood products in various parts of the world. The most familiar solvent treatment is the ‘light organic solvent preservative’ (LOSP) treatment based on low density solvents such as white sprit. Until recently white spirit was the only non-aqueous solvent approved for use in wood preservation in New Zealand. Australia also permitted...
A Siraa, P Lobb, C Molloy