Your search resulted in 1020 documents. Displaying 25 entries per page.
A simple method for assessing the effects of lyctid beetle attack on longitudinal compressive strength of spotted gum sapwood
2023 - IRG/WP 23-20700
…of damage. Small-scale testing could provide a simple method for rapidly assessing damage and be used to determine whether full scale testing was warranted. The potential for using longitudinal compression strength for quantifying lyctid damage was assessed on sawn spotted gum sapwood samples. While strength…
M Powell, J J Morrell
Geopolymer as a fixation method for tannin-based wood preservatives
2023 - IRG/WP 23-30774
This study aims to test if a second step impregnation with a geopolymer solution can fix Colatan GT10, a commercial extract rich in tannins, to wood, reducing their leaching and improving their performance as wood preservatives. Scots pine sapwood specimens of…
Y M López-Gómez, A Barbero-López, A Haapala
Suitability of boron preservative treatment of minor species as framing in New Zealand buildings
2023 - IRG/WP 23-30778
…research with boron indicated that the dip/diffusion method for green timber would give adequate preservative retention in sapwood for most species and in some cases would also penetrate heartwood. This was widely accepted by the industry as being the case for species other than radiata pine including those…
D Page, I Simpson, T Singh
Establishing the minimum effective penetration of wood preservatives in the refractory heartwood of E. nitens
2023 - IRG/WP 23-30780
…bridge the testing gap.
This study evaluated a laboratory method to determine the minimum effective level of chromated copper arsenate (CCA) penetration into Eucalyptus nitens heartwood that prevented fungal colonization by the brown rot Fomitopsis ostreiformis. Visual and culturing results indicated that the epoxy…
J R Vargas, J J Morrell, L Yermán, K C Wood
The influence of chemical and thermal modification on homogeneity between sapwood, heartwood, and transition wood of short rotation teak
2023 - IRG/WP 23-40961
…treatment could be an interest eco-friendly modification method for the sawn timber industry to bring more uniform boards on the markets and a good selection for improving the low quality of short rotation teak wood.
R Martha, B George, W Darmawan, P Gerardin
Field test methods as long-term aging – report of selective wood properties
2023 - IRG/WP 23-40962
…the modulus of elasticity. Wood exposed to the field test method can be a valuable research material as a post-consumer wood product. CCA-treated wood, acetylated wood, and thermally modified wood were characterized by high resistance to the fungi, regardless of whether it was exposed to III or IV class of use…
W Perdoch, M Benc, B Mazela, A Szulc, J Cegiela
Non-vacuum/pressure ACQ treatment
2023 - IRG/WP 23-40971
…reduce economic losses. The hot and cold bath treatment method has long been known and provides an inexpensive, low technology process for locally sourced timber. The potential for using the hot/cold bath process was explored using alkaline copper quaternary compound (ACQ) on end-sealed slash pine (Pinus…
J Norton
Ultrasound as an alternative treatment in wood protection
2023 - IRG/WP 23-40973
…work has been the effect of low frequency ultrasounds as a method to control of Pine Wood Nematode. The results show that low frequency ultrasounds (Hz 50/60, 230V) have an effect on nematode survival both in vitro and in infected wooden specimens.
L Robertson, S M Santos, S Cobacho Arcos , A Navas, M T Troya
Starch modified with silanes – high hydrophobic surface treatment for wood protection
2023 - IRG/WP 23-40981
…of wood with starch-silane treatment depend on the method of preservation and conditioning samples, the structure of the silane, and the concentration of starch and silane. Starch modified with methyltrimethoxysilane performed excellent and permanently against leaching, hydrophobic properties of wood.
W Perdoch, M Bajstok, B Mazela, I Siemińska, B Peplińska
Optimization via artificial intelligence of intumescent coatings for wood substrates
2023 - IRG/WP 23-40987
…Bayesian optimization) techniques appear to be efficient methods to optimize complex systems. This method has been used to optimize the chemical composition of an intumescent coating on wood substrates according to different fire criteria.
E Verret, S Duquesne, A Collin
Effect of incised pattern on flexural strength of CLT
2023 - IRG/WP 23-40993
As a study aimed at developing preservation methods suitable for CLT, investigations have been carried out using “deep penetration treatment”. This treatment method was originally developed as a treatment method for sawn lumber and glulam used as sill members. In the treatment, materials are…
T Mori, R Takanashi, T Miyauchi, Y Ohashi, S Isaji
Fungicidal properties of black liquor from the waste MDF board digestion in terms of wood protection
2023 - IRG/WP 23-50379
…in both studies were determined by the accelerated method. It was found that the black liquor, which is a by-product in the process of pulping lignocellulosic material, shows various fungicidal properties depending on the type of raw material.
B Mazela, W Perdoch, A Szulc, I Sieminska
Eradication of beetles attacking wooden historical buildings by humidity-controlled warm-air treatment
2023 - IRG/WP 23-11028
Humidity-controlled warm-air treatment is a method that kills mainly beetles that are damaging the wood. In this process, a heat-insulating and airtight covering is placed around the object building, and the temperature inside the covering is gradually raised to about 60°C, held for a certain period…
Y Fujii, Y Fujiwara, M Harada, H Kitahara, M Shimada, S Kondo, Y Sato, M Shimada, R Kigawa, H Watanabe, Y Komine, S Hidaka, D Ogura
Determination of total fluoride in preservative-treated wood by ion selective electrode, without steam distillation
1996 - IRG/WP 96-20086
An analytical method was developed to determine total fluoride in wood treated with aqueous fluoride or borate-fluoride formulations. Ground wood was mixed with 60% sodium hydroxide solution and oven-dried overnight before furnacing at 600°C. The cool fused…
M J Kennedy
Evaluation of weathering and termite resistance of the Myoung-oil as a Korean traditional coating agent
2022 - IRG/WP 22-10996
…exposed in the external environment according to the EN118 method. In the termite test of weathered wood specimens, MO was not effective against termites. And termite attack on weathered wood treated with M75 and M50 was observed according to the exposure time. However, the T100 and M25 reliably prevented termite…
S-M Yoon, Y Park, W-S Jeon, H-M Lee, J-G Park, K Dal Nam, W-J Hwang
Impact of wetting agents on polyelectrolyte complex impregnation for wood fire-retardancy
2022 - IRG/WP 22-30768
…Surface tensions were measured using the Wilhelmy plate method. Effect on the wood wettability was also studied by dynamic contact angle. An increase of the weight gain was obtained by adding SCHWEGO wett 6237, whereas SCHWEGO wett 6292 has no significant effect. Finally, PECs with SCHWEGO wett 6237 were surface…
M Soula, J B Grenier, S Duquesne, F Samyn, V Landry
Green approach in wood mineralization for improvement of fire properties
2022 - IRG/WP 22-30769
…incorporation of carbonates has proven to be a promising method for improving fire properties. The paper presents fire properties of two wood species (spruce and beech) modified using recently proposed eco-friendly mineralization process. Method is based on vacuum pressure impregnation using water solution of…
A Pondelak, R Repič, L Škrlep, N Knez, F Knez, A S Škapin
Acetylation of pine wood in Uruguay
2022 - IRG/WP 22-40927
…design, or the application of preservatives. The latter method has been and still is the most used in Uruguay, usually applying low cost and high effectiveness products, but which are also highly toxic. However, the use of alternative products and processes that are both non toxic and sustainable is currently…
C M Ibáñez, L Castillo
Steam Pre-conditioning Treatment Prior to Acetylation: Impact on Dimensional Stability, Moisture Response Behaviour, and White-Rot Fungal Resistance of Hevea brasiliensis and Mitragyna ciliata Wood
2022 - IRG/WP 22-40930
…D-2017 standards and acetylated following a catalyst-free method. The primary source of variation in this study is the steam-conditioning treatment of specimens at holding periods of 30 minutes (H1), 60 minutes (H2), and 90 minutes (H3) before acetylation modification. Acetylated unsteamed specimens were used as…
E Uchechukwu Opara, J Mayowa Owoyemi, J Adeola Fuwape
Optimized composition of alkyd emulsion with nanoparticles of iron oxide for enhancing protection of thermally modified wood
2022 - IRG/WP 22-40940
…treatment is acknowledged as an environmentally friendly method to improve durability of wood and some of its properties, such as biological resistance, dimensional stability, reduced hygroscopy. Despite these improvements, when used outdoors, also thermally treated wood is subjected to the action of environmental…
E Sansonetti, D Cīrule, I Andersone, B Andersons, E Kuka
Phenol formaldehyde modification and termite resistance under laboratory testing
2022 - IRG/WP 22-40952
…recently with advances in processing conditions that the method truly affords a means of achieving conventional modification for solid timber. This paper has investigated the modification of radiata pine (Pinus radiata) using PF resin at 22.5% and 30% solids content, with subsequent curing at 150oC under pressure.…
L Nunes, A Pitman, M Duarte, B Stefanowski, D Jones
Durability of thermally modified western hemlock lumber against wood decay fungi
2022 - IRG/WP 22-40954
…into standard 19 mm blocks for testing according to AWPA method E10. Performance of thermally modified wood was measured against two brown rot fungi, Rhodonia placenta and Gloeophyllum trabeum and one white rot fungus, Trametes versicolor over an 8, 12 and 16-week incubation period. Unmodified western hemlock wood,…
G Presley, J Cappellazzi, I Eastin
A Comparison of Cross-Laminated Timber (CLT) Floor Panels using Finite Element Analysis and Experimental Fire Testing
2022 - IRG/WP 22-40955
…floor panel was developed using the Finite Element (FE) Method in Abaqus. This paper analyses the thermal behaviour of a CLT panel when exposed to a standard test fire. In the modelling of a CLT floor panel, Eurocode 5 temperature-dependent relationships were adopted. The results of the FE model were then compared…
M Yasir, A Macilwraith, K Ruane
Validating a short-term laboratory method to assess the resistance of timber to biodegradation by marine wood-borers
2021 - IRG/WP 21-10975
…or banned in several countries, including the UK. Novel methods in wood modification and protection are therefore required to replace such techniques. Use of lesser-utilised timber species and wood modification offers a promising alternative approach of reducing damage by marine wood-borers. Processes of…
L S Martin, J R Shipway, G P Malyon, S M Cragg
Development of software to automate the quantification of the extent of penetration of treated wood
2021 - IRG/WP 21-20678
…is determined by calculation in our head. Although this method allows for quick measurement, it requires experience for accurate measurement. On the other hand, in the case of image processing, the degree of penetration is determined by measuring the area of coloration using some software e.g., Microsoft Paint,…
Y Susa, D Watanabe, T Shigeyama, Y Sugai