Your search resulted in 865 documents. Displaying 25 entries per page.
Structural health assessment of wood - A comparison of methods for determining the spatial spread of fungal infestation in beams and rafters
2025 - IRG/WP 25-11051
Wood decay in buildings can cause severe economic losses, require comprehensive refurbishment, and removal of decayed wooden elements from the building. The latter aims at restoring the structural integrity of the component or the entire building through replacement, and at preventing the infestation from spreading further. In practice, components are cut out of the structure to such an extent tha...
C Brischke, N Sommerfeld, E Flohr, A K Mayer, S Bollmus
A comparison of methods – how to achieve a robust and conclusive durability classification of wood
2025 - IRG/WP 25-11063
The biological durability of wood is a relative and unitless size, and therefore wood species and wood-based materials are assigned to durability classes (DC). In Europe, such classes are based on a variety of measures, which can be absolute or relative to a non-durable reference species. The aim of efforts to develop and standardise methods for determining biological durability should be to ensur...
C Brischke
Enhancing the Fire Resistance of Spruce Wood through Treatment and Additive Application: Small Flame Test Method
2025 - IRG/WP 25-20737
Spruce panels treated by spraying with Burnblock® spray, were tested using “Small flame test method” according to EN ISO 11925-2:2011. The fire retardant product from Burnblock ApS is reported by the Danish company to be bioderived and non-toxic. The results for the untreated planed spruce showed moderate flammability whereas the Burn Block treated panels exhibited exceptional fire resistance...
E S Mujanic, R Hasanagic, E Kerzic, L Fathi, M Humar
Enhancing the Effectiveness of Penflufen by using a Plant Booster
2025 - IRG/WP 25-20759
Penflufen (Preventol® A 800) is a modern pyrazole fungicide which has been approved by the US EPA for the use in wood protection in 2018. Penflufen is an inhibitor of the succinate dehydrogenase (SDHI). It is highly efficient against wood decaying basidiomycetes fungi. In the European standard efficacy test EN 113/ EN 84, penflufen is controlling both brown rot and white rot fungi at the low rete...
D Messaoudi, A Robert, P Meckler, T Jaetsch
The impact of common fire retardancy salts and minerals on further properties of wood
2025 - IRG/WP 25-30821
Wood has become an increasingly important construction material. To ensure fire safety, fire retardants are widely applied. Recent research focuses on environmentally friendly fire retardants with strong fixation. Phosphate-based salts like diammonium hydrogen phosphate show high fire protection potential but are highly leachable due to their good water solubility. As a newer trend mineralisation ...
T Franke, T Volkmer
Evaluation of moisture exclusion ability of wood using double-layer outdoor exposure tests
2025 - IRG/WP 25-41021
The material resistance of wood to decay must be due to the combined effects of heartwood extractives and the moisture content state. Evaluating the moisture exclusion ability of wood is important for assessing its durability in outdoor use. We conducted previously double-layer outdoor exposure tests and investigated the relationship between moisture content over time and the progress of decay usi...
T Osawa, R Noda, K Yamamoto
AI Models for Accelerating Wood Protection Testing: Development of Predictive Tools Based on Long-Term Field Test Data
2025 - IRG/WP 25-41023
In this study, we present the development of DecAI, an artificial intelligence (AI) model designed to optimise and accelerate performance evaluations of wood protection products in the European EN 330:2014 "Field test: L-joint method." The Danish Technological Institute (DTI) compiled a dataset of over 100,000 data points from approx.10,000 L-joint samples collected over +15 years at field sites i...
J Stenbaek, B Noufel, L Glade, P Bisgaard
A multi-dataset validation study of moisture prediction in Norway spruce wood exposed outdoors
2025 - IRG/WP 25-41029
Wood used in outdoor construction undergoes continuous cycles of wetting and drying, resulting in fluctuating moisture contents that directly influence its long-term durability. Excess moisture above a critical threshold leads to deterioration by fungal decay, limiting the service life of the structure. Service life models thus rely on accurate predictive models of moisture behaviour. However, cap...
J Niklewski, C Brischke
Durability evaluation of outdoor-exposed CLT treated with various wood presevatives using CT scans
2025 - IRG/WP 25-41035
Methods for wood preservation treatment of large materials such as Cross Laminated Timber (CLT) are limited. It is unclear which wood preservation treatment methods can effectively protect CLT from rot risk. In this study, accelerated rot tests (fungus cellar test) of CLT treated with the solvent-borne wood preservative by non-pressure treatment, named ‘deep penetration treatment’, were conduc...
Y Sakurai, T Shigeyama, Y Sugai
Quantitative Prediction of Latent Deterioration in Wood Coatings Using Mid-Infrared Spectroscopy and Machine Learning
2025 - IRG/WP 25-41038
Wood coatings play a vital role in prolonging the lifespan of timber structures by protecting them from environmental degradation. However, conventional evaluation methods rely on visual inspections, which cannot detect latent deterioration before visible damage occurs. This study integrates attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy with partial least squares ...
Y Teramoto
Non-destructive methods for field assessment of wood biodeterioration in hardwood trailer decks exposed to tropical environments
2025 - IRG/WP 25-41039
Apitong (Dipterocarpus spp.), an increasingly rare tropical hardwood from the rainforest in Southeast Asia, has long been used as decking materials for open-bed trailers and trucks across North America. As the natural population of Apitong trees steadily declines, there is an urgent need to find sustainable, domestically sourced alternatives for trailer decking. A recent project evaluated the perf...
X Wang, X Xie, G Kirker, C A Senalik
Colorimetric performance of temperate wood species under tropical weathering
2025 - IRG/WP 25-41041
The appearance of wood, including its color and texture, is one of the most important features for its application as solid products, such as furniture, cladding, and terrace decking. Weathering can cause significant changes in the color of wooden products in outdoor applications, influencing their market acceptance and long-term performance. This study evaluated the colorimetric performance of fo...
K da Silva Pereira, S J da Costa Lima, M F C Santos, L Emmerich, C Brischke, D C Batista
Development of an Early Degradation Diagnosis Technology for Wood Coatings Using Mid-Infrared Spectroscopy and Machine Learning
2025 - IRG/WP 25-41047
Accurately predicting the degradation state of wood coatings is challenging, and as the coating deteriorates, it becomes a major factor accelerating the degradation of the wood itself. In this study, we aimed to develop a diagnostic technology that combines mid-infrared spectroscopy and machine learning to assess latent coating degradation, which cannot be detected visually, and to enable appropri...
K Nishimura, T Ito, S Isaji, T Takano, H Ohki, Y Teramoto
Durability Enhancement of US Hardwoods for Use in Open Trailer Decks
2025 - IRG/WP 25-41048
Apitong, a tropical hardwood derived from endangered species within Dipterocarpus genus, has long been used as a decking material for open flat-bed and lowboy trailers in the U.S. However, as more Dipterocarpus species are classified as endangered and critically endangered by International Union for Conservation of Nature (IUCN) due to the declining population of Apitong trees, there is a growing ...
X Xie, X Wang, G Kirker, C A Senalik
Contribution of naturally durable wood use to Circular Economy - Understanding the classification system of natural durability and its variation within wood species
2025 - IRG/WP 25-50411
Total wood demand is shown by FAO to increase 49 percent between 2020 and 2050, regardless of deteriorating conditions such as deforestation and degradation due to fire and biological damages. Demand for wood as a building material is also projected by UNEP to increase significantly to 300 Gt in 2040. To address this situation, extension of the service life and re-use of wood are expected to make ...
K Yamamoto, T Osawa, R Noda