Your search resulted in 296 documents. Displaying 25 entries per page.
Absorption of inorganic salts solutions. Retentions of inorganic salts. Fire retardants
1990 - IRG/WP 3625
The study aims evaluated the impregnation capacity using fire retardants on woods with differents densities. At the same time, impregnation with several fire retardant salts were carried out in order to obtain their absortion and retention in wood.
A Garcia, J Navarro
Influence of the peeling on the absorption in the sap displacement method
1990 - IRG/WP 3626
…more. The treatment began a few hours after felling. The absorptions obtained in partially and totally barked fenceposts were compared. In both timber species, the barked fenceposts absorbed approximately two and a half times more preservative than the other fenceposts partially barked.
M V Baonza Merino
TBTO absorption and penetration in pine joinery treated by various processes
1989 - IRG/WP 3523
…retentions and penetrations than the dip treatments. The absorptions by the 15 s dip treatments could be improved significantly by preheating the wood to 60-90C° by microwave, radio-frequency or infra-red techniques. Since this approach is amenable to a continuous treatment process, it is being evaluated for…
P A Cooper, Y T Ung
Disproportionate absorption of different constituents of CCA salts
1988 - IRG/WP 3484
…of preliminary experiments carried out to study selective absorption of different constituents of CCA salts and sludge formation in commercial treatment, using Terminalia myriocarpa and Pinus kesia timbers, are reported in this paper. The objective of these experiments is to evolve simple and practical methods to…
V R Sonti, S Sonti, B Chatterjee
A technical note on the limitations of atomic absorption spectrophotometric analysis of copper/chrome/arsenic solutions according to BS 4072 (1974) and BS 5666: Part 3 (1979)
1988 - IRG/WP 2320
…BS 4072 (1974) and BS 5666: Part 3 (1979) detail an atomic absorption spectrophotometric method for the quantitative determination of copper, chrome and arsenic in both preservative solutions and treated timber. Use of this technique during a research programme at Aberdeen has highlighted some potential inaccuracies…
A J Pendlebury, J A Petty
Penetration and absorption of water-borne preservatives in conifers from the Western United States: A preliminary report
1988 - IRG/WP 3475
…chromated copper borate. Retentions were measured by gross absorption while penetration was measured using chrome azurol S for copper, cucurmin/salicylic acid for boron, and ammonium molybdate/O-anisidine/stannous chloride for arsenic. The results are discussed in relation to future research directions.
S Kumar, J J Morrell
The effect of composition on the effectiveness and fixation of CCA and copper/chrome preservatives. Part 1: Effectiveness. Part 2: Selective absorption and fixation
1973 - IRG/WP 324
…than the copper - arsenic. Observations on selective absorption and leaching suggest that the chromium fixes the arsenic preferentially to the copper. Although there appears to be no major amount of fixation of copper by arsenic, at the start of addition of arsenic to copper-chrome formulations there is a small…
D N R Smith, A I Williams
Wood structure in relation to excessive absorption - a literature survey
1971 - IRG/WP 300
…structure of wood in relation to the excessive absorption', started from the idea that the subject only could be dealt with successfully if the structure was taken into account in relation to a normal absorption pattern in so far as this knowledge can enlighten the understanding of the abnormal…
S M Jutte
Intra-species variability of moisture dynamics in wood
2024 - IRG/WP 24-11040
…of different European-grown wood species. Different stem zones of Norway spruce (Picea abies), Scots pine (Pinus sylvestris), European larch (Larix decidua), European beech (Fagus sylvatica), English oak (Quercus robur), and Black locust (Robinia psudoacacia) were examined. Their moisture dynamics were determined…
C Brischke, H Purps, L Emmerich
The spread of technology in a simple wooden pile construction method to prevent shallow landslides
2025 - IRG/WP 25-20733
…National Forest (Hyogo Prefecture), road reinforcement zones in the Anshōji National Forest (Kyoto Prefecture), embankment collapse prevention areas in the Ōmine region (Mie Prefecture), and volcanic scoria slopes in the Myōjin area of Yamakita Town (Kanagawa Prefecture). Additionally, controlled experiments…
K Shimizu, K Tanaka, H Hashitani, A Yamaguchi, K Kabeno, Y Iijima, A Ito, M Jo, T Fujii, K Abe, H Ochiai
The non-energy utilization of low-quality wood from the invasive species Prunus serotina
2025 - IRG/WP 25-30814
…properties were examined, such as the wetting angle, absorption of water vapor from humid air, and the wood's resistance to fungal infection. The modified raw material was then used to produce prototype thermal insulation materials, for which thermal characteristics were determined. Based on the conducted…
W Perdoch, P Kołwzan
Unlocking the Potential of Dairy Coproducts in Wood Modification
2025 - IRG/WP 25-30822
…dairy-derived products. The results indicate a solution absorption exceeding 200%, ensuring deep penetration into the wood structure. After curing, the treated samples exhibited significant weight gain, which persists after water leaching. The cell wall bulking remained below 3% across all treatments, contributing…
A Keralta, J Karthäuser, J Winninger, J Chamberland, M-J Dumont, V Landry, H Militz
Properties of plasma etched super black wood
2025 - IRG/WP 25-30825
…materials have very low reflectivity due to structural absorption of light. They are attracting considerable scientific and industrial attention because of their important applications in many fields including astronomy, photovoltaics, and optical science, amongst others. We have developed the first super-black…
K J Cheng, X Xu, V A Hernandez, P D Evans
Experimental characterizing of liquid water uptake and release – key to understand moisture-induced decay risk analysis
2025 - IRG/WP 25-41020
…face to allow either longitudinal, radial, or tangential absorption. Wetting and drying of the specimens were recorded over a period of two weeks each. Results show that there are large differences between the main anatomical directions and smaller differences between the sample dimensions. With the gained data a…
M Nopens, J T Benthien, J Trautner, C Brischke
Durability and service life of wood in constructions. The Spanish approach of European Standard EN 460
2025 - IRG/WP 25-41028
…of environmental conditions (different climatic zones and exposure to weathering), use classes and position and thickness, as well as correct execution of construction and maintenance, and all of them should be taken into consideration in the final durability of wood elements in construction, in the…
D Lorenzo, J Fernández-Golfín, M Touza, A Lozano, J Benito
Investigation of the Correlation between Blue-Light and Transparent Wood and Its Impact on Eye cells
2025 - IRG/WP 25-41042
…performance, with residual lignin enhancing blue light absorption. Cell viability assays revealed that transparent wood provided superior blue light protection, with the 36-hour treated samples achieving the highest cell survival rates. This study highlights the potential of transparent wood as a functional…
J-Y Jiang, C W Lin, P-Y Kuo
Investigation of Pressure-Treated Foundations with Wood Preservative and Termite Control in Existing Wooden Houses in Japan
2025 - IRG/WP 25-50402
…could be confirmed for the degree of infiltration and absorption of preservative chemicals when there was decay damage in the surrounding environment. For ant damage, the infiltration degree was about 80%, and for absorption, the values for the surrounding environment became greater after about 3kg/㎥. However,…
K Usami, T Kawada, H Ishiyama
Laboratory evaluation of PA1b, an insecticidal protein extracted from pea seeds (Pisum sativum), as bait active ingredient against the subterranean termite Coptotermes gestroi (Blattodea: Rhinotermitidae) in tropical zones
2024 - IRG/WP 24-11038
Coptotermes gestroi (Wassman 1896) is one of the worst pests in tropic areas, economically. Two types of curative methods are used since decades to eliminate colonies that attack constructions: injection of biocidal treatment solutions on wood, walls and soil…
J Vuillemin, D Messaoudi, P da Silva
Assessment of hydrophobic properties of acetylated and furfurylated Korean wood species
2024 - IRG/WP 24-30812
…and the weight per gain (WPG) and hydrophobicity (water absorption and water adsorption) were evaluated after chemical modification. As a result of evaluating the WPG of acetylation by Korean wood species, sapwood and heartwood of Pinus densiflora showed 20.1% and 17.8%, respectively, which was similar to the WPG…
S-M Yoon, Y-S Choi, H-M Lee, Y Park, W-J Hwang, S-K Jang
Service life of poplar, a low durability hardwood
2024 - IRG/WP 24-41007
…is considered to be easily treatable, however refractory zones may lead to insufficient presence of biocides or chemicals in general. The positive moisture dynamics, especially when incorporated in products like plywood, allow for certain use class 3 applications without additional treatment. For cladding…
J Van Acker, X Jiang, L De Ligne, J van den Bulcke
Assessment of the Material Durability and Structural Integrity of the Wooden Velodrome in Češča vas, Slovenia
2023 - IRG/WP 23-11012
…contact angle measurements, short-term capillary water absorption, exposure to high relative humidity, and immersion in water.
D Kržišnik, M Humar, B Lesar
Accelerated surface mould testing for exterior wood treatment in Temperate, Tropical and Laboratory environments
2023 - IRG/WP 23-20699
…in temperate (Denmark) and tropical (Malaysia) climate zones, respectively, and in Laboratory conditions in a mould chamber.
In this test setup, a transparent surface treatment is applied to Scots pine (Pinus sylvestris L.), sapwood. Test panels are exposed for 2 month (Denmark and Malaysia) and 6 weeks (mould…
A Nazeri, J Stenbaek, T R Laursen, A H H Wong, B M Hasnul
Failure characteristics of thermally modified poplar wood subjected to mechanical tests
2023 - IRG/WP 23-40983
…of rupture (MOR), the degree of polymerization, and water absorption characteristics. MOR of controls subjected to 100 °C were similar to those exposed to 160 °C, while MOE was more variable with a slight upward trend for samples exposed to a given heating regime for only 30 min. The increases in MOE may be…
E Bari, M Ghorbanian Far, N Moradi, J J Morrell, G Daniel, B Mohebby, R Hosseinpourpia, M Humar
Dynamics of fungi colonization on the surface of Scots pine wood during natural weathering in different European climate zones
2022 - IRG/WP 22-10984
…specific weather conditions, representing diverse climate zones, on the occupancies and colonization dynamics of fungi/mould species.
The test was performed on untreated Scots pine (Pinus sylvestris L.) wood samples exposed to natural weathering for 12 weeks from July to September 2021, in two locations: 1) Izola…
F Poohphajai, O Myronycheva, O Karlsson, L Rautkari, J Sandak, A Sandak
Performance of wood exterior structures above ground in Spain. Performance and durability of a shelter of spruce in a shopping centre after 20 years
2022 - IRG/WP 22-20680
…of environmental conditions (different climatic zones and exposure to weathering), use classes and position and thickness of wood elements and the influence in the emergence of early pathological processes associated primarily with fungal decay (wood destroying fungi) and wood destroying insects in lesser…
D Lorenzo, A Lozano, M Alonso, J Fernández-Golfín, M Touza, J Benito