Your search resulted in 529 documents. Displaying 25 entries per page.
Preservative Treatment of simul (Bombax ceiba) Veneers with Hot and Cold Water Solution of borax-boric acid by Soaking Process
2010 - IRG/WP 10-40528
Veneers of simul (Bombax ceiba) were treated with different concentrations of water- borne preservatives borax-boric acid (BB) by soaking process for different time periods. In the case of hot water treatment, it was found that the average retention of preservative chemicals increased gradually with the increasing treatment period from 20 minutes to 60 minutes. Similar trend was observed in the ca...
K Akhter, Md Abul Hashem, S Akhter
Comparative Study of Heat Treatment of Beech Wood in Hot Water and Steam Medium
2010 - IRG/WP 10-40536
Heat treatment of wood is an effective method to improve the dimensional stability and durability against biodegradation. Heat treatments of beech wood in 2 different mediums (hot water and steam) in 180ºC were compared in physical, mechanical and anatomical properties. Mass loss in hydrothermally treated wood was higher than hygrothermally treated samples. Mechanical properties (MOR, MOE and CS)...
A Talaei, K Yaghoobi, A N Karimi
Isolation and evaluation of Lactobacillus brevis from chilli waste for potential use as a wood preservative
2011 - IRG/WP 11-10749
Lactic acid bacteria were isolated from chilli waste and evaluated for their ability to arrest wood rotting basidiomycetes. In previous work a quick screening method using 96 well plates and measuring absorbance to determine fungal growth was developed specifically to investigate the efficacy of isolated bacteria against wood decay fungi. Using this method, one bacterium (isolate C11) was identif...
D O’Callahan, T Singh, I R McDonald
Cobblestone Church in Gross Gievietz: Historic Wooden Construction and Potential for Conservation and Use
2011 - IRG/WP 11-10760
A majority of cobblestone churches situated in the German Federal State Mecklenburg-Vorpommern demonstrates immense construction deficiencies and are threatened by decay. The historic cobblestone church located in Groß Gievitz, built in the 13th century, is one such church in which the roof beam constructions have degraded considerably due to deficiencies in reconstruction measures.
This paper d...
A Schulze, W Unger
Phytosanitary standards and the potential for acceptance of chemical treatments as a phytosanitary measure
2011 - IRG/WP 11-30558
Regulations governing international trade in forest products must balance the economic and social benefits of trade with the potential risks of transporting invasive species. The International Plant Protection Convention (IPPC) is an international agreement intended to manage this process. It develops international phytosanitary standards (ISPMs) that are recognised by the World Trade Organisation...
A Uzunovic, R Stirling, J J Morrell, P I Morris, C F Schauwecker
The potential for using CuO nanoparticles as a wood preservative
2011 - IRG/WP 11-30569
The potential for using nano-copper particles for wood protection was investigated using mini-agar slant and wood block tests with Gloeophyllum trabeum or Trametes versicolor. Nano-copper was more effective against G. trabeum than T. versicolor, although neither of these fungi would be considered copper tolerant. Nano-copper solutions were stable over a 17 week storage period, but precipitated w...
I S Weitz, K Knani, M Maoz, C Freitag, J J Morrell
The study of fungicidal values und sorption processes of ionic liquids- potential wood preservatives on soils
2011 - IRG/WP 11-30572
In the paper, the fungicidal activity of new ionic liquids structures, N,N-dimethylalkylamines derivatives, containing a spacer built of 7 or 10 methylene groups with nitrate(V) and tetrafluoroborate anions, didecyldimethylammonium and benzalkonium nitrate(V) were presented. The research was also conducted on the sorption of cations of ammonium ionic liquids on five types of podzolic, humic alluvi...
W Przybylska, J Zabielska-Matejuk, A Stangierska, A Skrzypczak
Effectiveness of Water Based Bentonite-Borate Slurry for In-situ Remedial Protection of Historic Wooden Piles: The Eurobor Protocol, Part 2
2011 - IRG/WP 11-30574
The study of the biocide product Eurobor®, water mixture of boric acid, borax and sodium bentonite, aimed to verify previous findings regarding borates penetration from a clay-water mixture of foundation timber. The product was applied on samples from 100 year old timber foundation from the city of Göteborg. Although in ground for this long the timber was in acceptable god condition due to groun...
M. Theorin, K. Fimmerstad, K-M. Bandh
The potential of propolis and other naturally occurring products for preventing biological decay
2011 - IRG/WP 11-30575
The potential of using a range of naturally occurring plant extracts and propolis from bee hives for enhancing the durability of timber in service as well as helping with the conservation of archaeological timbers is considered in this paper. Results reported demonstrate that there is some degree of protective effect noted, suggesting a viable treatment option might be developed based on a deeper ...
D Jones, N Howard, E Suttie
The potential of silicone-based formulations to enhance wood properties through industrial treatment for outdoor use
2011 - IRG/WP 11-30578
High hygroscopicity is one of the main weaknesses of wood as far as its susceptibility to biodegradation, and specifically to fungal decay. New wood preservation technologies are constantly entering the wood protection market, competing with traditional, biocide-based preservation. Silicones are commercially used as hydrophobic agents on stones and concrete. They belong to the restricted number of...
F Simon, F Marchal, F Pochon, M Kutnik, I Le Bayon
Evaluation of an optimized industrial process aiming to improve the natural durability and mechanical behavior of bamboo for outdoor use
2011 - IRG/WP 11-40554
Mao Bamboo (Phyllostachys pubescens) is characterized by high contents of sugar and starch and by high hygroscopicity, which makes it susceptible to biodegradation, and specifically to fungal decay. Still, many bamboo based products regularly enter the European wood construction market, competing with traditional solid wood products used for outdoor decking and cladding. The performance of a heat ...
F Simon, M Kutnik, I Le Bayon, G Moisset, V Gatimel
Effects of Heat-Treatment in Hot Water and Steam Mediums on Gas Permeability of Beech Wood
2011 - IRG/WP 11-40557
Heat-treatment, as a major method of wood modification, improving dimensional stability, and natural durability, has been studied greatly from different aspects. The effect of heat-treatment on gas permeability, as an important physical property of wood, in two different mediums of hot water and steam, as well as in two buffers of 7 and 8, is the main topic of the present study. Hydrothermal treat...
H Reza Taghiyari, A Talaei, A Karimi
A survey on Bio-Resistance of Oak and Elm in Caspian Sea Water
2012 - IRG/WP 12-20483
Logs of Oak (Quercus castanifolia) and Elm (Zelkova carpinifolia) have been cut to lumbers with dimensions of 300×100×30 mm. The oven dried samples have been impregnated with CCA (Chrome–Cupper-Arsenic). Treated and untreated (natural as a control) woods have been established for 3, 6, 9 and 12 months in Amirabad beach of Behshare under fishing environment. The observation results shows that i...
S M Kazemi
Performance superiority of CCA-C treated wooden jetty poles and piles used for 30 years in Bangladesh against marine borers
2012 - IRG/WP 12-30582
Observational study along with previous investigation and records revealed that chromated copper arsenate type C (CCA-C) impregnated southern pine poles and piles of jetty constructed in most vulnerable brackish water in Bangladesh are stable and resistant to attack of all types of marine borers after 30 years of use. It is evident from the service records of other construction materials that CCA-...
A K Lahiry
Mold Control for Treated Lumber in Block-Stack Storage Conditions
2012 - IRG/WP 12-30588
The mold development and control for freshly treated and block-stacked wood have been evaluated using a green house mold testing method. The results for the mold resistance of several commonly used water boron preservative treatment systems, such as ACQ, Copper Azole, and borates with and without inclusion of mold inhibitors are presented. The data suggest that the different preservative treatme...
L Jin, P Walcheski, A Preston
Supercritical impregnation of wood with siloxane
2012 - IRG/WP 12-30595
This paper describes the effect of supercritical impregnation with siloxane on the water repellency of Scots pine (Pinus sylvestris) sapwood samples. Samples were impregnated with a low amount of siloxane dissolved in supercritical carbon dioxide using isopropanol as a co-solvent. Siloxane retention (i.e. weight percent gain (WPG)) of the treated samples was 1.3 % (w/w) as found by mass balance. T...
A Kjellow, F Imsgard, J Fernandes, O Henriksen, E Klaassen, R Wagner, J Delis
Effect of preservative treatment on dimensional stability of plywood made of treated simul (Bombax ceiba) veneer
2012 - IRG/WP 12-40575
The dimensional stability such as thickness swelling and water absorption of plywood made of treated simul (Bombax ceiba) veneers were investigated after 2 hours and 24 hours soaking under water. The veneers were treated with hot water and cold water solution of borax-boric acid (1:1), neem leaves and mahogany seeds of different concentration (1:10, 1:20, and 1:40) at different treatment duration....
K Akhter, M Mahabubur Rahaman, A Ara
Effects of Nano-Zycosil on Liquid and Gas Permeability of MDF
2012 - IRG/WP 12-40578
Effects were studied of zycosil nanoparticles, with size range from 30 to 90 nm, on liquid and gas permeability of medium density fiberboard. 100 g of nanozycosil was added to each kg of dry fibers. Density was kept constant at 0.67 g/cm3. The obtained results indicated that addition of zycosil to the mat resulted in a significant increase in gas permeability due to the lower fiber-content in the ...
H Reza Taghiyari, K Heidarhaee, P Noori, A Karimi
The effect of press time on springback and water absorption of acetylated particleboard
2012 - IRG/WP 12-40579
In this study the effect of press time on springback, thickness swelling and water absorption was investigated. After 24 hours soaking in acetic anhydride, in order to achieving WPG 17%, acetylated particles were heated in an oven at 120 0C for 360 minutes. Acetylated and nonacetylated (control) particleboards were produced with 10% melamine urea formaldehyde (based on the oven-dry weight of part...
F Bavaneghi, M Ghorbani, A Kargarfard
Water uptake of wood surfaces with and without coating: influence of weathering
2012 - IRG/WP 12-40580
The objective of this study was to compare liquid water absorption of wood surfaces with and without coating, before and after artificial weathering. Samples of spruce, oak and sapelli were exposed to the EN 927-6 cycle for 1500 and 1850 hours and to the weathering produced by the Garner wheel for 1000 hours. Two highly pigmented coatings (solventborne and waterborne) and two semi-transparent stai...
L Podgorski, S Collignan, J D Lanvin
Effects of nano-wollastonite impregnation on fire resistance and dimensional stability of Poplar wood
2012 - IRG/WP 12-40595
The fire-retardant properties of Nano-Wollastonite (NW) in poplar wood (Populus nigra) were determined in this study. Some physical properties such as water absorption, volumetric swelling and Anti-Swelling Efficiency (ASE) were also measured. Specimens were prepared according to the ISO 11925 standard for the fire-retarding properties, and ASTM D4446-2002 standard for the physical properties. Imp...
A Karimi, A Haghighi Poshtir, H Reza Taghiyari, Y Hamzeh, A Akbar Enayati
The Effects of Industrial-Scale Heat Treatment and Impregnation with Boron Compounds on Water Uptake and Tangential Swelling of Some Wood Species
2012 - IRG/WP 12-40599
This study evaluated the effects of boron impregnation and heat treatment on water uptake and tangential swelling of spruce (Picea orientalis), pine (Pinus nigra), beech (Fagus orientalis) and poplar (Populus deltoides) wood species. The samples (10 x 5 x 40 - tangential x radial x longitudinal cm) were impregnated with 4 % boric acid and 4 % borax according to the ASTM D-1413 standard method. Aft...
A Can, S Yildiz, Ü C Yildiz
The effect of nanozycosil on the water absorption and dimensional stability of Beech wood
2012 - IRG/WP 12-40606
Zycosil is a clear penetrating water repellent. This product works by penetrating into the substrate and modifying the surface tension to inhibit water intrusion. Beech wood (Fagus orientalis) was modified by treatment with nanozycosil. Then water absorption and dimensional stability in terms of volumetric swelling percent and anti-swelling efficiency were determined and found to be improved on t...
M Ghorbani, F Bavaneghi
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
Initial investigations into the spalting potential of Peruvian hardwoods
2014 - IRG/WP 14-10813
This study was performed to determine if several moderately-utilized Peruvian hardwoods had potential for spalting applications. We applied a modified decay jar methodology with six native Peruvian woods and three moulds, with a period of incubation of six weeks. Results showed that Nigrospora sphaerica and Marupa (Simarouba amara) resulted on the highest significant internal pigmentation (black),...
S M Vega Gutiérrez, S C Robinson