Your search resulted in 573 documents. Displaying 25 entries per page.
Limited variability in biological durability of thermally modified timber using vacuum based technology
2011 - IRG/WP 11-40567
The SmartHeat® thermal timber treatment is a new technology based on the process parameters being steered very precisely mainly due to the vacuum applied and heating system involved. Timber treated with this technology shows a potential for less variability of biological durability in one batch. Several batch treatments were sampled and assessed on statistical variability of decay resistance agai...
J Van Acker, S Michon, J Van den Bulcke, I De Windt, B Van Swaay, M Stevens
Life Cycle Assessment Comparison of Treated Wood to Alternate Materials – Overview, Results and Lessons
2011 - IRG/WP 11-50282
Life Cycle Assessment (LCA) has proven useful in documenting the “green” benefits of various treated products compared to the commonly used alternates. To date, six LCA comparisons have been done or are nearing completion using ISO14040 and 14044 principles and data from US EPA databases. In almost all cases, the impact indicators for treated wood products show considerably smaller adverse e...
T Stephen, P E Smith, C R McIntyre
Re-use of casting timber
2011 - IRG/WP 11-50283
Re-use of casting timber could be a way of saving timber resources, particularly in countries where most timber for construction purposes has to be imported. The objective of the present study was to investigate residual concrete on casting timber re-used five times. Moulds were made of sections of Norway spruce, untreated and treated with a casting oil and a wax formulation applied by a vacuum-pr...
I Johansson, S Breyne, H Egnell, J Jermer
TRU-CORE Process for Treatment of Refractory Species and Engineered Wood Products
2011 - IRG/WP 11-40573
The TRU-CORE Process is a novel, chemically-based technology for rapidly delivering globally accepted wood preservatives and insecticides deep into the core of wood and wood-based composites in a waterborne carrier. Protectant materials which can be utilized with the TRU-CORE Process include a variety of carbon-based fungicides and insecticides. An important feature of the TRU-CORE Process is it...
A S Ross
In-situ experimental treatment and consolidation of degraded timber elements from a XIX century building
2012 - IRG/WP 12-10767
This paper presents the in situ experimental conservation work performed on three timber structural elements from a XIX century building: two floor beams and one roof beam. The palace was built in 1877 in the centre of Lisbon initially with residential purposes. It has four floors, with timber structural horizontal elements, stairs and roof beams (generally of Pinus sylvestris L.). The exterior wa...
D F Henriques, J de Brito, L Nunes
Antifungal activity of wood extractives from waste products of steam distillation of Aniba rosaeodora
2012 - IRG/WP 12-10779
Aniba rosaeodora, is a slow growing evergreens of the Lauraceae family which are indigenous over a wide range of the Greater Amazon Region (the Guianas and Venezuela, Brazilian Amazon…). The essential oil obtained from the wood has a characteristic aroma and is a long-established ingredient in the more expensive perfumes. Around the olfactive characteristic of the essential oil is due to the pre...
N Amusant, A Digeon, E Hoüel, J Beauchène
Performance of boron diffused wood products used indoors for 144 months in Bangladesh
2012 - IRG/WP 12-30581
In this service performance study of boron diffused hardwoods, boron in the form of boric acid (H3BO3) was applied separately through paste and through wet cloth. The born diffused woods were kept indoors for 144-months in Bangladesh to ascertain the performance of treated wood against wood destroying insects. The new easy application processes of cost effectual boric acid have been found effectiv...
A K Lahiry, T Lahiry
Mould resistance of bamboo timber treated with tebuconazole-loaded micells
2012 - IRG/WP 12-30586
In this paper both anti-mould test through inhibition zone and mould resistance test on bamboo samples were carried out evaluate mould resistant effect of tebuconazole (TBA) loaded micells. Results showed that TBA loaded micells prepared with a ratio of TBA to PEG113-b-PCL28 50:25 had the best mould resistance, followed by micells prepared with a ratio of TBA to PEG113-b-PCL28 50:50. PEG113-b-PCL2...
Sun Fangli, Chen Anliang, Bao Binfu, Zhou Yueying, Zhang Shaoyong, Zhang Xu
Thiacloprid as a glueline termiticide for veneer based wood products
2012 - IRG/WP 12-30592
Thiacloprid is an insecticide commonly used in the agricultural industry. No evidence of its commercial use in wood has been discovered by the authors. Results are reported for veneer based wood products treated with thiacloprid via the glueline. Thiacloprid was tested against Coptotermes acinaciformis following the brick assembly technique as described in the Australasian Wood Preservation Com...
K Day, A Siraa, P Lobb
Glueline fungicides in veneer based engineered wood products - results from laboratory work for the H1.2 hazard class in New Zealand
2012 - IRG/WP 12-30593
The use of glueline insecticides in plywood and laminated veneer lumber is commonplace in several countries. However, few glueline fungicides are registered for commercial use with previous work suggesting that achieving control of decay from the glueline is very challenging. This paper summarises two tests completed on Pinus radiata plywood with a new glueline fungicide comprising the active in...
A Siraa, K Day, P Lobb
Influence of heat treatment intensity on the structural integrity of 14 timber species
2012 - IRG/WP 12-40586
Thermally modified timber (TMT) is characterized by improved durability and dimensionally stability, but strength properties, especially the dynamic ones, are compromised at the same time. Because dynamic standard tests require high efforts and time, the high-energy multiple impact (HEMI) –test was developed for the fast and reliable characterisation of the structural integrity of TMT, showing a...
C R Welzbacher, C Brischke, G Maier
Effects Of Wood Preservative On Mechanical Properties Of Glulam Manufactured From Lower Density Malaysian Tropical Timber
2012 - IRG/WP 12-40590
This study is to investigate the effect of wood preservative on the mechanical properties of glulam timbers made from low density Malaysian hardwood timbers. Utilization of lower density Malaysian tropical timber for structural applications have not exploited extensively due to their inferior strength. By converting into treated glued laminated (glulam) timbers it could offer the possibility of th...
L Francis, Z Ahmad
Guideline for Environmental Product Declaration for Thermally Modified Timber
2012 - IRG/WP 12-50287
Environmental Product Declarations (EPD) intend to enable the comparison of the environmental attributes of products that meet equivalent functional requirements. This guideline describes the proceedings of EPD for thermally modified timber (TMT). The main objective is the general survey on requirements on EPD which are based on European and international standards.Up to now only a few EPDs for na...
L Clauder
Efficiency of the Amazon Forest Oils as Preservatives to the Attack of cellulolytic fungi in Pine Wood
2012 - IRG/WP 12-30599
The bobbins of wood are used for storage and field installation of cables from the electricity and telecommunications sectors. There are legal requirements governing the Brazilian ways of treating the wood used in these sectors, aimed at preventing pollution and protecting nature. When exposed to severe environmental conditions in Brazil these products are degraded and occurs many operational prob...
S Silveira, I M S Mendes, R S Paiva, J E Volponi, R C G Comar, R S Cruz
Seed oil and defatted cake proximate composition of non timber product Annona squamosa (Annonaceae) grown in Benin
2012 - IRG/WP 12-30607
Annona squamosa L. is a small tree which grows wild in many places in the tropical regions, locally called “xwingle” in Benin. Its produces edible fruits, typically globular or heart-shaped which are highly appreciated and the seeds are not used. In the course of work about identifying new oil sources from a large number of oil bearing seeds grown in Benin, we report here on the chemical compo...
T S Djenontin, J Dangou, P Lozano, D Pioch, D C K Sohounhloue
Survival of Bursaphelenchus xylophilus exposed to different active ingredients of wood protectors
2013 - IRG/WP 13-10802
The pine wilt nematode (PWN) Bursaphelenchus xylophilus (Steiner and Buhrer 1934) Nickle, 1970 is a quarantine organism with a high potential to damage Conifer forests in Europe. This has driven the European Union to protect forest stands from the propagation and dispersion of this pathogen.The nematode was first detected in Europe in Setubal (Portugal) in 1999 and eradication measures were taken....
S C Arcos, M T Troya, L Robertson, F Llinares, M Conde, A Navas
Quasi-in-situ durability tests on oak timber bridges
2013 - IRG/WP 13-20510
This study aims on developing a method for determination of wood durability on samples taken from real structures in service. Therefore quasi-in-situ durability tests have been conducted exemplarily on timber bridges made from English oak (Quercus robur L.). Drilling cores were found to be a feasible alternative to standard specimens for laboratory durability tests against pure cultures of Basidio...
C Brischke, C J Behnen, M-T Lenz, K Brandt, E Melcher
Testing the performance of timber using 27 different field test methods
2013 - IRG/WP 13-20517
Numerous test methods to determine the durability of timber and timber products have been described in relevant literature. However, only some of these methods have been standardized and thus only very few are regularly used for resistance tests in the field. Since results from extensive comparative field studies have shown differences in moisture performance between different test methods, the ai...
L Meyer, C Brischke, J Rieken
Extraction and analysis of DNA from green and seasoned timber as basic methods for determination of wood species and origin
2013 - IRG/WP 13-20523
Against the background of the European timber trade regulation EUTR, commenced to law by March 2013, the determination of wood species and tracing of its origin is getting a great importance. A promising approach for establishing fast and reliable tracking systems for wood products is DNA analysis. A critical point is the extraction of analysable DNA from the wood and its lignified cell walls. Thu...
K Jacobs, H Mende, W Scheiding
Virulence of two Laboratory Test Strains and one Natural Isolate of Rhodonia (Oligoporus) placenta against Thermally Modified Pine and Beech Wood
2013 - IRG/WP 13-20524
Rhodonia (Oligoporus) placenta is known as a relative aggressive basidiomycete fungus against thermally modified timber. In durability lab tests, this often results in a lower durability class, compared to other test fungi. In the reported work, the virulence of three different strains of Rhodonia placenta for untreated and thermally modified timber was determined and compared. Therefore, two lab ...
K Plaschkies, W Scheiding, K Jacobs, N Rangno
Potential valorization of wood extractives from waste products of steam distillation of Aniba rosaeodora: antitermitic activity
2013 - IRG/WP 13-30629
Aniba rosaeodora, is a slow growing evergreens of the Lauraceae family which are indigenous over a wide range of the Greater Amazon Region (the Guianas and Venezuela, Brazilian Amazon…). The essential oil obtained from the wood has a characteristic aroma and is a long-established ingredient in the more expensive perfumes. The wood is also composed with alkaloid compounds like anibin. These compo...
N Amusant, A Digeon
A Vision of the Chilean Treated Wood Industry
2013 - IRG/WP 13-40619
Chile is an important actor in the world wide forestry industry, activity which represents 3,1% of the Gross National Product (GNP). The wood products sector, which includes pulp and paper, is the second source of export in Chile with USD 6,500 millions income per year. Native species are the main forestry source with 15,9 millions has., but the principal commercial activity is based on 2,3 mil...
F J Latorre, T A Hanke
Application of a model for the prediction of fungal degradation of thermally modified beech timber by Trametes versicolor
2013 - IRG/WP 13-40622
Colour measurement technology is found to be feasible for characterization of the property changes of thermally modified timber (TMT). In opposite to time-consuming and expensive laboratory tests a non-destructive test represents an improvement for the manufacturer of TMT. Therefore the aim of this study was to develop a method which allows sorting the different treatment intensities after the man...
Clauder, L., Richter S., Unger, W., Pfriem, A
Modelling the risk for mould growth on timber stored outdoors protected from rain
2013 - IRG/WP 13-20529
A mould resistance design (MRD) model was used to calculate the maximum duration of storage of timber outdoors under cover (protected from rain) before the onset of mould growth on the surface of wood. The prediction model is based on laboratory tests performed in constant and cyclic climates and were also confirmed against exposure tests in attics and crawl spaces. The prediction model presented ...
E Frühwald Hansson, S Bardage, S Thelandersson
In-ground durability of wood-based products – Comparative assessment of graveyard field tests and terrestrial microcosms
2014 - IRG/WP 14-20538
Traditionally wood durability and the effectiveness of wood preservatives are determined in so-called graveyard tests (according to EN 252 or AWPA E7). For laboratory testing, terrestrial microcosms (TMC) can serve as an alternative. Both tests have been applied for different types of wood-based materials, preservative treated, modified and unmodified wood. However, the usability of laboratory res...
A Soetbeer, L Meyer, C Brischke, P Larsson-Brelid, J Jermer