Your search resulted in 40 documents. Displaying 25 entries per page.
Social and economocal impact of an extension of service life resulting of an adequate preventive treatment. Application to wooden components used in urban areas with a high density of population
1993 - IRG/WP 93-50001-15
Le document évalue les problèmes rencontrés en zone urbaine pour le sauvetage des constructions: coordination de la lutte, délimination des chantieres et des périmètres d'investigation, nuisances causées par les interventions, risques pour la santé, risques pour l'environnement. Coûts. Comparaison socio-économique du traitement préventif et des interventions à posteri...
A T De Lelis, G A C Lopez
The effect of chitosan on the growth and physiology of two wood inhabiting fungi
2006 - IRG/WP 06-10590
The effect of chitosan on the wood inhabiting fungi Sphaeropsis sapinea and Trichoderma harzianum was evaluated at cellular level. Increasing concentrations of chitosan caused an increase in the amount of peroxide in cultures of S. sapinea, which was accompanied by a simultaneous decrease in superoxide. The same effect was not observed in T. harzianum. The growth of both fungi was inhibited when h...
D Vesentini, T Singh
The Effect of Wick Action upon Moisture Distribution in Ellagate Treated Pinus radiata Wood
2006 - IRG/WP 06-40328
Sapwood stakes of Pinus radiata D. Don were treated with water-soluble tetraguanidinium, tetracholine and tetrakis-benzyltrimethylammonium ellagates. The effect of these treatments upon moisture distribution was investigated by wick action. Given that chemical reactions within the wood substrate between nutrients and treatment solutions may alter the properties of the wood with regard to moistur...
S R Przewloka, B J Shearer, J A Hann
Effect of chitosan on the morphology and ultrastructure of two wood inhabiting fungi
2007 - IRG/WP 07-10606
An investigation was undertaken to compare the antifungal effects caused by chitosan against two selected wood degrading fungi Sphaeropsis sapinea and Trichoderma harzianum on their growth, morphological and ultra-structural characteristics, using differential interference microscopy, epifluorescence microscopy and transmission electron microscopy.
The effect of chitosan on fungal morphology was ...
T Singh, A P Singh, G Daniel
Field Stake Tests with Copper-based Preservatives
2008 - IRG/WP 08-30459
The performance of field test stakes derived from commercially produced ground contact retention
copper quat preservatives based on either soluble copper complexed with ethanolamine, or from a water-based suspension of particulate micronized copper compounds, as well as untreated southern yellow pine controls, is compared at two decay test sites. After less than one year in field test some of t...
A Preston, L Jin, D Nicholas, A Zahora, P Walcheski, K Archer, T Schultz
COST Action E37. Sustainability Through New Technologies For Enhanced Wood Durability -
2008 - IRG/WP 08-40417
The main overall objective of the Action was to concentrate on the contribution of wood durability to sustainability through the development of systems for quality assurance and performance classification of modified wood and wood products as alternatives to wood treated with traditional preservatives. By this means it seeked to improve and consequently to increase the cost-effective use of compon...
R-D Peek, J Van Acker
A Comprehensive Review of Copper as a Biocide, with a Focus on Micronized Copper
2008 - IRG/WP 08-30486
This paper reviews the wood preservative biocide active ingredient copper and delvers into new and previously unpublished data regarding the new micronized formulations which are now in vogue and widespread use in N. America in all residential treated lumber markets. Included in this review is the overall discussion of copper containing formulations used for pressure treated wood used over the las...
M H Freeman, C R McIntyre
COST Action FP0904 – Increasing the Understanding of Thermo-Hydro-Mechanical Wood Behaviour and Processing
2013 - IRG/WP 13-40646
The polymeric components of wood and its porous structure allow its properties to be modified under the combined effects of temperature, moisture and mechanical action – so-called Thermo-Hydro-Mechanical (THM) treatments. Various types of processing techniques, including high temperature steam with or without an applied mechanical force, can be utilised to enhance wood properties, to produce eco...
D Jones, P Navi
Natural durability of Chilean commercial wood exposed to the action of marine borers
2015 - IRG/WP 15-10849
Results of field experiences of natural durability of ten commercial wood, exposed to the action of Bankia martensi (Stempell) in the South coast of Chile are presented. Tested species were seven types of native wood and three types of exotic ones. Test specimens of standard dimension of 0.02 x 0.045 x 0.23 m with three replications by species were used. The degree of attack was determined accord...
R Carmona C, C Osorio, A Almuna
Performance of bio-based building materials – viewpoints from the first year of COST Action FP1303
2015 - IRG/WP 15-20572
Maintaining and expanding the market potential for bio-based building products in indoor and outdoor construction uses remains a key activity for industries in the forestry and biotechnological sector, particularly in Europe. Whilst there are ongoing activities within IRG for collecting and populating a database on performance on wood, the performance data for many other (i.e. non-wood) "environme...
D Jones
Termite and insect resistance of acetylated wood
2015 - IRG/WP 15-40703
The benefits from acetylation of wood to enhance resistance against fungal decay and dimensional stability have been known for many years. Since 2007 Accsys Technologies has been commercially producing Accoya® wood that is based on acetylation of radiata pine. A number of studies on the resistance of acetylated wood to attack by wood destroying termites have been conducted, but there is no common...
F Bongers, M Kutnik, I Paulmier, J Alexander, H Militz
High-frequency monitoring of mass loss due to brown rot degradation of modified wood
2016 - IRG/WP 16-10862
Fungi growing in liquid culture undergoes three separate phases in which they i) adapt to the new environment, ii) grow unrestrictedly and exponentially, and iii) are inhibited to increase in number/mass due to lack of nutrients etc. Filamentous fungi have been shown to exhibit similar growth phases in a solid food substrate and have been modelled to grow in this way also in solid wood. In modifie...
R Ringman, A Pilgård, K Richter
Wood Protection and Environmental Performance of Products - Impacts COST Action FP1407 Aims to Bring
2016 - IRG/WP 16-50323
Though many aspects of wood modification (chemical, thermal, impregnation) treatments are known, the fundamental influence of the process on product performance, the environment, and end of life scenarios remain unknown. To contribute to the low-carbon economy and sustainable development, it is essential to integrate interactive assessment of process parameters, developed product properties, and e...
A Kutnar
Spanish termites standard UNE 56418:2016 “Protocol of action in urban areas affected by subterranean termite attacks”. Example of application of the standard in a real case in the old city of Vigo, Spain
2018 - IRG/WP 18-10912
Termites are wood destroying insects always present in the nature with an important wood decomposition function. In Europe are located in the Mediterranean area. In Spain is an important problem in urban areas. It is estimated about 80% of old historic cities in Spain are affected by subterranean termite attacks and it is the most important damage in wood structures and carpentries, in old buildin...
D Lorenzo, A Lozano, M Touza, J Benito, M T de Troya, J Galván, L Robertson
Developments within COST Action FP1303 related to the modification of wood
2018 - IRG/WP 18-40847
COST Action FP 1303 (Performance of bio-based building materials) was established in 2013 with the main aim to improve the knowledge on the performance of bio-based materials used as building products and the assessment of factors influencing these, with the aim of increasing their service life. This Action has helped in understanding the interlinked relationships between durability, product aesth...
D Jones