Your search resulted in 1317 documents. Displaying 25 entries per page.
Biological performance of wood- and bamboo-polypropylene composites: Effects of particle content, particle size and Zn borate
2012 - IRG/WP 12-40577
Particle content and size of wood material in wood plastic composites (WPCs) can affect efficacy of WPCs against fungi and termites. This study evaluated fungal and termite resistance of WPCs manufactured by using two different levels of particle content (50 and 70%)…
S N Kartal, S Aysal, E Terzi, T Yoshimura, K Tsunoda
Field-testing of Norway Spruce Claddings with Monitoring of Moisture Content, Material Temperature and Microclimate
2012 - IRG/WP 12-20502
…in southern Norway to study the variation in moisture content in the cladding, the material temperature and the ambient microclimate. The aim of the field test is to provide data that can be used to estimate aesthetic service life of claddings based on material properties, surface treatments, and climate. One of…
G I Vestøl, L Ross Gobakken
The effect on moisture content of water trapped in wood joints
2012 - IRG/WP 12-40613
…exposure parameter is a combination of wood moisture content and temperature and the resistance parameter is the ability to withstand decay by rot fungi. This study concerns the exposure parameter of wood outdoors above ground. To predict moisture and temperature conditions in the wood from climate data, the…
M Fredriksson, L Wadsö, P Johansson
Determination of Equilibrium Moisture Content (EMC) of wood in the neighboring Countries of Iran
2011 - IRG/WP 10-40540
…the cities were below or equal to the allowable moisture content of wood and, wood products and the other hygroscopic materials(leather, textile and related products) in service except Bakoo in Azarbajan (EMC=15.6%). Therefore, if wood and wood products and related hygroscopic materials are processed within the…
A A Enayati, H Z Hosseinabadi
The influence of moisture content and wood pH variation on fungal melanin formation in wood substrates
2011 - IRG/WP 11-10759
…the conditions of the wood substrate, including moisture content and pH. In an antagonistic environment some fungi respond with pigment formation that helps to isolate and protect their mycelium. This is often associated with slower fungal growth and delay of wood mass loss. Dark colored melanin is the most common…
D Tudor, S C Robinson, P A Cooper
Measurements of rot fungal activity as a function of moisture content by isothermal calorimetry
2010 - IRG/WP 10-20428
…the brown rot fungus Postia placenta at different moisture contents. The results clearly indicate that the heat production rate (a measure of respiration rate and activity) is moisture dependent. When the moisture content is decreased, less heat is produced, and when the moisture content is increased, more heat is…
L Wadsö, A Pilgård, G Alfredsen
Service Life Prediction of Wood Claddings by in-situ Measurement of Wood Moisture Content: Status after 5 years of Outdoor Exposure
2009 - IRG/WP 09-20401
…test rack with ICP coating for case studies. The moisture content data was converted into weekly average and weekly variation values which gave a deeper insight into the performance of the tested systems. The first was used to check for moisture build-up in the construction whereas the latter gave an indication of…
E Tang Engelund, B Lindegaard, N Morsing
Effects of acetic acid and nitric acid pre-treatment on copper content of spruce wood treated with CBA-A and CCA
2008 - IRG/WP 08-40406
…acid on compression strength values and copper retention contents of refractory spruce wood (Picea oriental L.) treated with the waterborne preservative Copper azole, (CBA-A, Tanalith-E 3492) and copper / chrom / arsenic (CCA). Before the CBA-A and CCA treatment, the samples were immersed in 500 ml of nitric and…
S Yildiz, E Dizman, Ü C Yildiz
The effect of wood moisture content and rod dosage on movement of boron through Douglas-fir heartwood
2007 - IRG/WP 07-30431
…Douglas-fir blocks conditioned to 30, 60 or 90% moisture content (MC). MCs tended to decline over the 180 day test period, but there was no evidence that the rods acted to draw moisture away from the wood. As expected, boron movement tended to increase with increasing MC, but threshold levels were still reached…
Y Cabrera, J J Morrell
Effect of barriers on moisture content of treated and non-treated utility poles
2007 - IRG/WP 07-40369
…poles. Despite the apparent lack of difference in moisture content, the barriers other useful attributes including limiting loss of preservative and restricting access of soil fungi to the wood surface may make them attractive in some applications.
C S Love, J J Morrell
The Role of Moisture Content in Above-ground Leaching
2007 - IRG/WP 07-50245
This paper reviews previous reports on the moisture content of wood exposed above ground and compares those values to moisture contents obtained using simulated rainfall and immersion methods. Laboratory leaching trials with CCA-treated specimens were also conducted and the results compared to published values…
S Lebow, P Lebow
Control of Moisture Content in Wood Materials for Mold Growth
2007 - IRG/WP 07-10630
Mold growth on wood materials is a major concern for house owners, as it can cause health and aesthetic problems. Mold fungi, present everywhere, usually appear as black or gray patches on wood surfaces in humid environments, and are common in houses. Like a…
Dian-Qing Yang
Effect of fiber type and content on the natural durability of wood flour/high density polyethylene composites against rainbow fungus (Coriolus versicolor)
2007 - IRG/WP 07-40387
In order to evaluate the effect of fiber type and content on the natural durability of wood flour/high density polyethylene (HDPE) composites against Coriolus versicolor, samples containing 25% and 50% by weight of various natural fibers and HDPE were selected. Natural fibers included in the study were wood…
A Karimi, M Tajvidi, S Pourabbasi
Comparison of permeability at different levels of moisture content in Bornmullerian fir (Abies bornmulleriana Mattf.) and Eastern spruce (Picea orientalis L.) impregnated under vacuum/pressure through full-cell method by using CCA and CCB of different concentrations
2007 - IRG/WP 07-40366
…and Eastern spruce (Picea orientalis L.) with moisture contents of 50 % and 15 %, which were impregnated under vacuum/pressure through full-cell method by using water-borne wood preservatives (impregnation materials) of Tanalith-C (CCA : copper-chromium-arsenic) and Wolmanit-CB (CCB: copper-chromium-boron) in…
I Usta
The Influence of Extractives on Western Redcedar’s Equilibrium Moisture Content
2006 - IRG/WP 06-40331
…such as western redcedar’s low equilibrium moisture content (EMC), contribute to its natural durability. Western redcedar’s low EMC was confirmed to be attributable to the presence of extractives and through a series of solvent extractions it was found that the lignans, including plicatic acid, were…
R Stirling, P I Morris
Specific gravity and moisture content of particleboards treated with various chemicals
2005 - IRG/WP 05-40310
…chemical substances on specific gravity and moisture content
The wood raw material used in the experiments were the mixture of coniferous wood [70%, Pinus brutia Ten., Pinus nigra Arn (Lamb.), Cedrus libani Ait.] and black poplar (30%, Populus nigra L.). In this mixture, barks have been accepted up to 5…
Ü C Yildiz, A A Var, H Kalaycioglu, S Yildiz
Service Life Prediction of Wood Claddings by in-situ Measurement of Wood Moisture Content
2004 - IRG/WP 04-20304
The Danish Technological Institute is in co-operation with industry partners running a project aiming at predicting the service life of different wood protecting systems.
The project focuses on examining the moisture reducing effect of different wood cladding…
B Lindegaard, N Morsing
Natural durability, density and extractive contents of 42 wood species of Bangladesh.
2003 - IRG/WP 03-10490
Natural durability, density and major extractive contents of 42 lesser used or unused wood species of Bangladesh have been studied. Correlation analysis between these properties has been performed. It has been shown that natural durability of these species neither explained by water soluble nor by alcohol…
S Akhter, K Akhter, S C Das
Effect of Oil Content on The Performance of Wood Treated with Pentachlorophenol
2003 - IRG/WP 03-30324
…pine treated with pentachlorophenol in oil at various oil contents. Results from field stake tests at two Gulf Coast test sites are presented. Both biological efficacy and preservative depletion data are discussed. Results suggest that increasing oil content leads to better performance of wood treated with…
H M Barnes, T L Amburgey, M G Sanders
Variation in natural durability of British grown Douglas fir ((Pseudotsuga menziesii (Mirb.) Franco). Part II. Effect of extractive contents and taxifolin
2002 - IRG/WP 02-10446
…the predominant decay type because of the high moisture content. The paper showed that significant variation in natural durability occurred between the seed origins and between trees within the seed origins. Furthermore density partly explained the variation in the natural durability of 3, of the 4 seed…
S Akhter, M D C Hale
Influence of CCA and TnBTO on wood decay, under different oxygen levels and various initial moisture content
2001 - IRG/WP 01-10415
…copper arsenate). In wood blocks two levels of moisture content (50% and 100% of saturation point) were used. Three levels of oxygen concentrations (10, 21, and 50%) were chosen. Treated and untreated wood were exposed to three fungi (C. versicolor a white rot, C. puteana, a brown rot, and C. globosum a soft rot).…
S M Kazemi, R J Murphy, D J Dickinson
Analysing the characteristic role of moisture content for drying and fluid flow in Sitka spruce. - Part 1: The drying process of sapwood and heartwood of two different thickness of Sitka spruce using a kiln. - Part 2: Effects of moisture content on longitudinal permeability of Sitka spruce in vertical variation of the tree
2000 - IRG/WP 00-40173
The characteristic role of the moisture content in Sitka spruce (Picea sitchensis (Bong.) Carr.) that grown in the United Kingdom was examined by this study on the basis of (1) the reduction of moisture content in two different thickness of sapwood and heartwood by kiln drying process, and (2) the…
I Usta
Soluble nutrient content in wood and its susceptibility to fungal discoloration and decay in above ground and ground tests
2000 - IRG/WP 00-10336
…samples rich and those poor in nutrients was measured. The content of nutrients was neither related to the mass loss of samples in a soil rich in brown rot fungi, nor in a pure culture test with the brown rot fungus Postia placenta. The nutrient status of samples as well as the choice of test soil can lead to…
O M Caballero, N Terziev
Moisture content of logs under sprinklers
2000 - IRG/WP 00-40157
…literature, sapstain fungi do not develop if the moisture content is above 120%. It is supposed that, the water sprinklers maintain the log's moisture content above this value, but, very often, sapstain is found on sawn lumber cut from these logs. Logs are harvested and transported to the sawmills on…
M C Rose, A M Briones, M Fernández
The use of lap-joints in natural durability testing: moisture content development during 36 months outside exposure trials
2000 - IRG/WP 00-20217
…period. In this paper, the outcomes of different moisture contents evaluations are presented. Completely painted samples without a lap-joint have the lowest moisture content with an increasing maximum in moisture content in the winter period over the years, however for most timber species (but pine sapwood) still…
H Militz, C J Bloom