Your search resulted in 3129 documents. Displaying 25 entries per page.
How the biochemical activities of polyphenols may be effective for the protection of wood deterioration by termites?
2023 - IRG/WP 23-30789
In spite of the remarkable mechanical characteristics of wood for building construction and furniture industry, this material is prone to biodeterioration by xylophagous organisms. This compromises its durability and performances during storage and services, and results in considerable economical losses estimated by the billions. Protection against fungi, termites and other wood biodegrading organ...
J-P Joseleau, D Messaoudi, K Ruel
Tree bark as a renewable source of wood protection materials for building applications (BarkBuild)
2023 - IRG/WP 23-30792
The BarkBuild project aims to address climate change mitigation by developing new, sustainable, and long-lasting wood building materials with low environmental impact. The project focuses on developing bark-based wood protection and building formulations that demonstrate technical performance, safety, and sustainability in both outdoor and indoor applications. The research objectives of the projec...
A Treu, M Sipponen
A novel wood preservative with vegetal extracts-cypermethrin mixture protects H2-weathered envelope-treated tropical hardwood kempas against Coptotermes termites
2023 - IRG/WP 23-30794
In accordance with sustainability development initiatives by commercial wood protection to conceive of cost-effective, environmentally acceptable wood treatment solutions replacing traditional biocides, this paper reports an aboveground subterranean termite test of termite-susceptible heartwood blocks of the tropical (Malaysian) structural hardwood kempas (Koompassia malaccensis) envelope-treated ...
D Messaoudi, A H H Wong
Envelope wood protection against subterranean termites under H2-hazard class tropical environment by a new generation wood preservative with vegetal extracts-cypermethrin mixtures
2023 - IRG/WP 23-30795
Wood protection industries in progressive economies globally are compelled to develop cost-effective, environmentally acceptable wood treatment solutions for long term carbon storage in wood materials/products while appealing to consumer demands for low environmental impact treated wood. A new generation wood preservative, based in part on 2% vegetal extracts and 0.16% cypermethrin components, has...
D Messaoudi, A H H Wong
Identifying compatible waterborne timber preservatives and fire retardants for use in a VPI system: a practical approach
2023 - IRG/WP 23-30796
To enhance the use and suitability of timber in all applications in both exterior and interior settings, timber typically needs to be treated with a preservative and/or a fire retardant chemical. Combining fire retardants with preservatives into a single treatment process has been a long-term aim of researchers in the timber preservative industry because of the significant logistic and economic ad...
R Robinson, S Meldrum
Emerging wood nanotechnologies towards sustainable application and preservation
2023 - IRG/WP 23-40959
Wood is one of the most abundant biomaterials on earth and has been used for construction historically. Although existing wood composites are commercially successful, materials development has not targeted nano-structural control of the wood cell wall, which could extend the property range. The high porosity and permeability of wood scaffold provide excellent opportunities for material infiltratio...
Q Fu, T Singh, D Elustondo, M Sorieul
Biological durability and wood-water interactions of sorbitol and citric acid modified wood – Effects on the expected service life
2023 - IRG/WP 23-40960
A high level of research activities on sorbitol and citric acid (SorCA) modified wood has been recognized in Europe over the last few years. As this treatment is close to entering an industrial-scale production, it is of interest to investigate how such treated wood performs upon long-term outdoor exposure. Hence, in this study Scots pine (Pinus sylvestris L.) sapwood was modified with aqueous sol...
K Kurkowiak, L Emmerich, H Militz
The influence of chemical and thermal modification on homogeneity between sapwood, heartwood, and transition wood of short rotation teak
2023 - IRG/WP 23-40961
Short rotation teak wood has low quality especially in durability. Heartwood presents sufficient natural durability and poor impregnability; meanwhile, most sapwood requires special treatment to increase its durability. The objective of this work was to investigate the effect of thermal or chemical treatment on homogenization between sapwood, heartwood, and transition wood for some selected proper...
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
Wood samples from a long-term field test are a valuable compendium of information about the material in the context of its aging processes. In the current work, wood samples from the round-robin test within the ECOMOD project were used as a material for the natural aging process (III and IV class of utility). The research scope was to determine selected properties of this wood which can be partial...
W Perdoch, M Benc, B Mazela, A Szulc, J Cegiela
Evaluation of the efficacy of silver nanoparticles and chitosan oligomer composites as poplar wood protective treatments against termites
2023 - IRG/WP 23-40963
Populus × euramericana ‘I-214’ (poplar) is a fast-growing species widely distributed throughout the world, and in the Castile-Leon region of Spain it accounts for more than 50% of all plantations. Its wood is becoming increasingly appreciated, yet its low durability against xylophagous agents —termites being one of the most aggressive and destructive in warm climates— continues to be a li...
E Spavento, M T Troya, M Casado-Sanz, J Martín-Gil, P Matín-Ramos, L Robertson, L Acuña-Rello
Adhesion and performance of exterior wood coatings on chemically and thermally modified wood – Results from 5.5 years outdoor exposure
2023 - IRG/WP 23-40964
Non-durable softwood and hardwood species were treated with the water-soluble cyclic N-methylol compounds 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) and methylated DMDHEU. One half of the modified specimens were coated with a waterborne acrylic coating system prior a natural weathering for 5.5 years according to EN 927-3 (2020). By frequent evaluations, the impact of chemical modifications ...
L Emmerich, H Militz
Resistance of phenol formaldehyde impregnated beech (Fagus sylvativa L.) LVL against biodegradation in soil contact
2023 - IRG/WP 23-40965
Alternatives to preservative impregnation are emphasized in Germany and other European countries. Even though these treatments significantly improve wood's resistance to decay, they often do not have a beneficial impact on the dimensional stability. One alternative product, which may be used in ground contact for items like poles and railway sleepers, could be beech (Fagus sylvatica L.) laminated ...
M Slabohm, C Brischke, S Bicke, H Militz
Effect of impregnation modification treatment on properties of Paraserianthes falcataria wood
2023 - IRG/WP 23-40966
Modification treatment can improve the properties of wood, particularly those of fast-growing species. Paraserianthes falcataria, also known as batai, is a fast-growing species with low wood density. This species has piqued the interest of those involved in industrial wood processing as a promising alternative for construction. The aim of this study is to improve the dimensional stability of batai...
A S Yusoh, A S Boneka, M K Anwar U, S Salim, S H Lee
Estimation of single shear strength performance of screw joints with decayed wood
2023 - IRG/WP 23-40968
In order to use existing wooden structures for a long term, it is necessary to evaluate appropriately the damage degree of bio-deterioration of the structural performance including the members and joint systems. As one for them, it is necessary to estimate more accurate the single shear strength performance of screw joints with decay. Therefore, we proposed the model considering the yield strength...
R Inoue, K Tanaka, T Mori
Through-boring to improve the performance of low durability Eucalyptus species for utility poles: 10-year field test results of pole stubs exposed in Southeast Queensland
2023 - IRG/WP 23-40972
An impending shortage of naturally durable hardwood electricity pole timbers in Australia has encouraged investigation of alternatives containing less durable, untreatable heartwood. Through-boring or drilling holes perpendicular to the long axis before treatment, has been used successfully on refractory softwood poles in North America and might have application in Australia. The use of through-bo...
J Norton, L P Francis, J J Morrell
Ultrasound as an alternative treatment in wood protection
2023 - IRG/WP 23-40973
Bursaphelenchus xylophilus Nickle 1970 is probably the most important nematode of the pine, affecting coniferous forest masses, and that has forced the European Union to take measures to prevent its propagation. In sawmills, wood is currently subjected to heat treatment in accordance with the International Standard for Phytosanitary Measures No. 15 (ISPM 15 2019). This standard contemplates three ...
L Robertson, S M Santos, S Cobacho Arcos , A Navas, M T Troya
New wood-modification process based on grafted urethane groups: Durability of carbamamylated Scots pine (Pinus sylvestris L.) wood
2023 - IRG/WP 23-40974
Substituting commonly used toxic preservatives with wood modification treatments can make the wood material less prone to water and moisture uptake. This approach favours a more sustainable protection of wood against biodegradation. In this study, Scots pine sapwood was full-cell impregnated with an aqueous solution of urea (30%), dried at 40°C for 24h, and subsequently heat-treated at 150°C for...
C-F Lin, O Myronycheva, O Karlsson, D Jones, D Sandberg
Investigating wood anatomical factors influencing the treatability of refractory southern pine- an imaging approach
2023 - IRG/WP 23-40975
Southern pine sapwood is non-durable, and preservative treatment is necessary to protect it against biological degradation. According to AS 1604.1 2021, timber products must have their sapwood fully treated with preservatives for various applications and hazard classes. However, there is a growing industry concern over the refractory sections of sapwood, which are untreated pockets of wood that do...
M Shirmohammadi, M R Karbaschi, B Hassan, W Leggate
The impact of pre-drying on treatment level variations of esterified solid wood analysed by X-ray densitometry
2023 - IRG/WP 23-40977
Wood modification requires homogenous treatment levels within the wood matrix to prevent insufficiently treated areas being subject to biodeterioration. Esterification of wood by citric acid and sorbitol can show differences in density caused by uneven chemical distribution during the curing phase and can be detected by x-ray densitometry. This study used density profiling to investigate the influ...
A Treu, S O Amiandamhem, E Larnoy
UV protection and dimensional stability of lignin-based wood treatments
2023 - IRG/WP 23-40979
New developments in the field of wood modification aim to enhance the intrinsic properties of natural timber. The limitation of wood should be preferably achieved with biobased ingredients and efficient, eco-friendly treatments possessing low environmental impact. Consequently, new solutions assuring expected properties and functionality over elongated service life and reducing the risk of product...
R Herrera,O Gordobil, F Poohphajai, A Sandak
CIOL Wood - towards industrial scale production
2023 - IRG/WP 23-40980
CIOL® is a new, low cost, non-toxic wood modification system, needed to replace traditional and non-sustainable alternatives with great potential. It’s important to find sustainable, environmentally friendly replacements to heavy metals and biocides. In the new European Bauhaus, Ursula Von der Leyen, president of the European commission, talks about how new living environment should be beautifu...
E Larnøy, J Biørnstad
Starch modified with silanes – high hydrophobic surface treatment for wood protection
2023 - IRG/WP 23-40981
The great potential of silanes for starch modification and their utility as surface wood protection is still not sufficiently assessed. The work aimed to analyze the crosslinking process's effect on starch modification with silane and tested the hydrophobic properties of surface-treated wood. The starch treatment was modified with methyltrimethoxysilane or N-octyltriethoxysilane. SEM-EDX with a cr...
W Perdoch, M Bajstok, B Mazela, I Siemińska, B Peplińska
Failure characteristics of thermally modified poplar wood subjected to mechanical tests
2023 - IRG/WP 23-40983
Poplar (Populus spp.) are among the fastest growing timber species and have been widely planted for use in plywood, composites, pallets, furniture components and paper production. However, the low density of the wood limits many structural applications and the wood has little resistance to biodegradation. Thermal modification represents one approach to improving durability by changing the moistur...
E Bari, M Ghorbanian Far, N Moradi, J J Morrell, G Daniel, B Mohebby, R Hosseinpourpia, M Humar
Short-term absorption of water and coatings on thermally modified blue-stained spruce wood
2023 - IRG/WP 23-40984
The importance of wood has been increasing in the last decades. Among conifers, predominantly spruce (Picea abies) wood is often used in building constructions in Europe. Namely for construction and facades of buildings, decking and fences. Due to the increased public concerns about biocides, alternative techniques for protection, such as thermal modification and protection by construction, are ga...
R Hasanagic, M Bahmani, M Humar, L Fathi, L Cai
Properties of thermal modified wood of Pinus pinaster and Pinus radiata from Galicia, Spain
2023 - IRG/WP 23-40985
This article provides the results of a research about the properties of thermal modified wood of maritime pine (Pinus pinaster Ait.), radiata pine (Pinus radiata D.Don) and Scots pine (Pinus sylvestris L.) from Galicia, Spain, thermal treated in the industrial vacuum-heat autoclave plant of FINSA group in Galicia, Spain. These three pine wood species are used in different solid products but due th...
D Lorenzo, J Benito, J Arancón, J Crespo