Your search resulted in 194 documents. Displaying 25 entries per page.
Study of the Factors Influencing the Treatability of Fir (Abies alba)
2018 - IRG/WP 18-40850
…study of some factors influencing the treatability of fir (Abies alba) was carried out in order to add better value to fir sawn timber coming from the Jura country, which is an abundant natural resource. In this part of France, fir wood as construction material is highly challenged by another softwood species, spruce…
E Raphalen, J-D Lanvin, M Kutnik, T Delobel, D Michaud, C Dubois
Investigation of the suitability of silver fir (Abies alba Mill.) for thermal modification
2004 - IRG/WP 04-40275
In this study the suitability of silver fir (Abies alba Mill.) was examined for thermal modification. Comparative experimental investigations were performed with silver fir and Norway spruce (Picea abies Karst.) after thermal treatments. Besides properties, which characterize the quality of heat…
C Brischke, A O Rapp
Sawn timber of fir (Abies alba Mill.) - Treatability and usability for the Hazard Classes 3 and 4
1999 - IRG/WP 99-40147
…project, tests on the treatability on sawn timber of fir (Abies alba Mill.) in oscillation pressure, vacuum pressure and double-vacuum processes have been worked out with 95 trunks taken from 3 different altitude levels (up to a height of 590 metres, 600 to 990 metres and over 1000 metres) and from 4 different…
E Graf, T Bör
Monitoring uptake and penetration of pesticides during impregnation of pine (Pinus sylvestris) and spruce (Picea abies) wood with bio-based microemulsion gel formulations
2020 - IRG/WP 20-30756
…an easily impregnable species, as opposed to spruce (Picea abies), a refractory species. In this work, the two species were impregnated with commercial bio-based emulsion formulations containing insecticide and fungicide agents. Penetration and uptake of the active agents were evaluated on laboratory specimens. The…
D Messaoudi, K Ruel, J-P Joseleau
The influence of microclimate on the moisture conditions in a Norway spruce (Picea abies (L.) Karst.) joint exposed to artificial rain
2013 - IRG/WP 13-20505
…and the wood moisture content. Norway spruce (Picea abies L. Karst.) joints of different designs were exposed to artificial rain in the laboratory and the duration of water in gaps and on surfaces were monitored as well as wood moisture content profiles. This paper presents moisture content measurements in one…
M Fredriksson, L Wadsö, P Johansson
The comparative resistance to fungi of the wood munika (Pinus heldreichii Christ.), fir (Abies alba Mill.) and spruce (Picea excelsa Poir.) compared with Pinus sylvestris L. and some physical and mechanical characteristics of munika
1981 - IRG/WP 1129
The munika (Pinus heldreichii Christ.) is situated primarily in the Balkans, and partially in the south of the Apenine peninsula. As an endemic species, with a very little annual increment, it has not been used enough as a timber for mechanical conversion up t…
M Petrovic, M Miric
Effects of concentration and temperature of CCA and CCB on wood strength of Turkish fir (Abies bornmulleriana Mattf.)
2009 - IRG/WP 09-40450
…MOE and modulus of rupture, MOR) of Turkish fir (Abies bornmulleriana Mattf.). Wood samples were mechanically tested after a mild full cell preservative treatment with 2.5 and 3.0% CCA and CCB solutions heated to 30 and 40 °C.Untreated controls were included for comparison.The experimental data indicated…
I Usta, M Hale
Radial flow of Bornmullerian fir (Abies bornmulleriana Mattf.) as affected by wood tapering and the condition of end wall structure of uniseriate ray parenchyma cells
2008 - IRG/WP 08-40441
Amenability to radial permeability of Bornmullerian fir (Abies bornmulleriana Mattf.) was studied on the base of the effects of wood tapering and the structure of end walls of uniseriate ray parenchyma cells. The results showed that the most remarkable culprits of the greatest fluid uptake (as the percentage of…
I Usta, S Aslan
Run-off quality from sprinkled debarked logs and logs with bark from Picea abies and Pinus contorta
2007 - IRG/WP 07-50248
…debarked logs and logs with bark from Norway spruce (Picea abies) and Lodgepole pine (Pinus contorta) were sprinkled for 10 to 12 weeks during the summer at two locations in central Sweden. Run-off was collected below the piles. pH, total organic carbon (TOC), total phosphorus, total nitrogen, and phenols in the log…
M Jonsson
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
…radial permeability of the species of Bornmullerian fir (Abies bornmulleriana Mattf.) 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…
I Usta
A behaviour of CCA penetration of fir (Abies bornmulleriana Mattf.) at different ramp times and constant vacuum/pressure applications
2006 - IRG/WP 06-40346
A behaviour of CCA penetration of Bornmulleriana fir (Abies bornmulleriana Mattf.) at different ramp times and constant vacuum/pressure applications was illustrated for the main flow directions by the experimental pictures.
I Usta, R Despot, M Hasan
The effect of rate of pressure application on preservative uptake along and across the grain of fir (Abies bornmulleriana Mattf.) at different ramp and constant pressure times
2004 - IRG/WP 04-20292
…longitudinal, tangential and radial penetrations of fir (Abies bornmulleriana Mattf.) which grown indigeneously in Turkey. The samples of 2 cm cubes of kiln-dried wood (nominated to 12% moisture content) were treated at different ramp times varied from very fast to very slow rates of pressure (bar) per time…
I Usta
The true dry rot fungus (Serpula lacrymans) as a wound parasite of living Norway spruce (Picea abies) in the Czech Republic
2001 - IRG/WP 01-10389
…were growing at the base of living Norway spruce (Picea abies), and he therefore suspected it to be parasitic. In September 1998 some of these localities were visited by Hussvamp Laboratoriet but in vain. In October 2000 four of the localities were revisited by the authors from Hussvamp Laboratoriet. In the first…
J Bech-Andersen, S A Elborne, J Andreasson, J Ch Sterler
Evaluation of the leach resistance and preservative efficacy of novel biocides as surface treatments applied by brush to spruce (Picea abies)
1998 - IRG/WP 98-30170
…test preservatives were applied by brush to Spruce (Picea abies), including formulation and untreated controls. A leaching program was carried out involving the immersion of the treated blocks in water for a scheduled period of time. Blocks were then subjected to biological tests to determine preservative efficacy…
I M Tierney, A Bruce, D C R Sinclair, T Yeates
Influence of felling time on the natural durability of norway spruce (Picea abies (L.) Karst.)
1998 - IRG/WP 98-10250
Natural durability was tested in a laboratory test according to EN 113. The test fungi were Coniophora puteana and Poria placenta. Additionally, the test method was modified by using water agar instead of malt agar, so that wood was the only nutrient source fo…
M Hirmke, K Messner, J Fellner, A Teischinger, R Wimmer
Studies on the permeability of Norway spruce (Picea abies)
1987 - IRG/WP 2295
It is well known that the bordered pits play a dominating role for liquid transport in softwoods. The mechanism behind pit aspiration during drying or heartwood formation seems to be well understood. The reason why the fixation of the membrane (torus) to the p…
I Johansson, K Nordman-Edberg
Färbeverfahren zur Unterscheidung von Holzzonen mit unterschiedlichem Absorptionsvermögen, insbesondere bei Fichtenholz (Picea abies Karst.). [Staining method for distinguishing zones of wood with different absorption behaviour, particularly in spruce (Picea abies Karst.)]
1980 - IRG/WP 3163
A simple regressive staining method for crosscut wood surfaces is described. Phloroglucinol-hydrochloric acid serves as stain; flowing water and a solution of sodium carbonate are used for development and fixation of a picture showing the differences of absorp…
S Cymorek
An analysis of the effects of some factors on the natural durability of pine (Pinus sylvestris L.) and spruce (Picea abies Karst.)
1986 - IRG/WP 1279
The effects of some factors on the natural resistance of pine and spruce sapwood against fungal decay and against attack of house-longhorn beetle larvae have been studied in laboratory tests and the results are evaluated by analysis of variance and regression…
J B Boutelje, T Nilsson, S Rasmussen
The impact of common fire retardancy salts and minerals on further properties of wood
2025 - IRG/WP 25-30821
…This study examines these aspects in mineralised fir (Abies alba), mineralised European oak (Quercus spp.), and mineralised European beech (Fagus sylvatica). Additionally, the wood was treated with diammonium hydrogen phosphate and potassium oxalate in a single-step process. For mineralisation, a two-step…
T Franke, T Volkmer
Analysis and performance of spruce alternative species and discarded wood for windows production
2024 - IRG/WP 24-50386
…potential replacement tree species for spruce (Picea abies), the predominant material for window frames. We evaluate Douglas fir (Pseudotsuga menziesii), Scots pine (Pinus sylvestris), thermally modified poplar (Populus nigra) and discarded silver fir (Abies alba) in laboratory and field tests. The laboratory…
B Lesar, J Levanič, M Humar, A Treu
Mechanical Properties of Thermally Modified Wood after twelve Months of Field Exposure
2022 - IRG/WP 22-40945
…woood species, namely beech (Fagus sp.) and silver fir (Abies alba), from Bosnia and Herzegovina thermally modified at three different temperatures and duration at maximum temperature. Samples of the mentioned wood species wood (Abies alba) were prepared according to EN 408+A1 standard. The maximum 4-point bending…
R Hasanagić, M Bahmani, L Fathi, M Humar
Performance of Norway spruce bridge in North-West Spain after 12 years exposure
2017 - IRG/WP 17-40796
…glue-laminated wood, are made in a lot of cases of fir (Abies alba) and spruce (Picea abies), generally from central and northern European origin and production without a correct treatment to improve their low natural durability because their use is previewed in use classes 1-2 according to the standard EN 335:…
D Lorenzo, J Fernández-Golfín, M Touza, M Guaita, A Lozano, J Benito
Engineering for Rural and Civil Development. Uni Performance of wood exterior structures above ground contact in Spain built with softwood species. The situation of cases in northern Spain
2016 - IRG/WP 16-20597
…glue-laminated wood, are made in a lot of cases of fir (Abies alba) and spruce (Picea abies), generally from central and northern European production and without a correct treatment to improve their low natural durability because their use is previewed in use classes 1-2 according to the standard EN 335: 2013. The…
D Lorenzo, J Fernández-Golfín, M Touza
Effect of Furfurylation on Shear Strength of Bond Line and Screw Withdrawal Resistance of Beech and Fir Wood
2016 - IRG/WP 16-40757
…withdrawal resistance of beech (Fagus orientalis) and fir (Abies alba) species. In this regard, specimens with two different values of furfurylation i.e. low (fir 14% and beech 20%) and high (fir 38% and beech 65%) levels were prepared and evaluated in comparison with untreated specimens. The furfurylation was…
A Talaei, H Abdolzadeh, M Saleh Zare
Diagnosis of failures in wood beams from historical house in Banská Štiavnica – Relations between ultrasonic measurements and bending properties
2010 - IRG/WP 10-20437
…Subsequently, for seventeen of the most bio-damaged fir (Abies alba Mill.) beams chosen for exchange were carried out other ultrasonic tests and also “in vitro” ultrasonic and bending tests on small specimens (300x20x20 mm). “In situ” measurements have shown that the lowest velocity of ultrasonic waves is…
L Reinprecht, M Pánek