Your search resulted in 737 documents. Displaying 25 entries per page.
Time-lapse evaluation of Aureobasidium pullulans growth on selected lignin derivatives and chitosan
2024 - IRG/WP 24-11032
…Furthermore, they served as quantitative data for the analysis of various morphological and growth parameters of A. pullulans. The combination of time-lapse microscopic observation, with mathematical analysis, offers valuable insights into the first steps of fungal growth that are crucial for our understanding…
Gubensek, F Poohphajai, A Tosic, K Butina Ogorelek, W Pajerski, A Cernosa, V Hribljan, A Sandak
Investigating moisture dynamics and fungal decay risk: integrating X-ray CT visualization and simulation benchmarks through a Fungal Control Unit
2024 - IRG/WP 24-11045
…and cold and dry conditions at the other side of a wall element, as such generating a moisture gradient across the building envelope. These conditions are often predicted to result in increased water content and mould growth in HAM simulations, and the FCU set-up allows us to test these simulations.
In this…
J Van den Bulcke, J Van Acker, M Delbeke, A Blommaert, N Van Den Bossche, M Steeman, L De Ligne
Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of five selected Nigerian wood species
2024 - IRG/WP 24-20713
…and 7.39%; and 5.53%, 8.15%, and 8.59%, respectively. The analysis of variance showed that this treatment varies significantly among the wood species and varying treatment. Further, the rate of combustion showed that T. superba, P. macrocarpa, C. zenkeri, B. laurenti, and K. ivorensis recorded percentage weight…
J Owoyemi, T O Akinwamide, O M Ibrahim, E A Iyiola
Surface treatment of cross-laminated timber to improve water repellency and UV resistance
2024 - IRG/WP 24-20716
…angles, CLT creates a robust and versatile structural element capable of supporting significant loads while promoting eco-friendliness and design flexibility. However, despite its numerous advantages, CLT is not without its drawbacks. One significant concern revolves around its susceptibility to water ingress…
M Chen, S Uphill, J Hilsenbeck, A Hughes
EMC as a quality control parameter for thermally modified wood
2024 - IRG/WP 24-20720
…for TMW. In this paper we review literature and present an analysis of the lab and field test performance data used by the NWPC to list TMW. We propose Equilibrium Moisture Content (EMC) as a valid and reliable metric for TMW quality performance at a threshold value of EMC=6.
Thus, decay resistance of thermally…
P Klaas, J T Lauridsen
Developing thermal-energy storage systems based on Kraft lignin-glyoxal and organic phase-change material modified wood
2024 - IRG/WP 24-30810
…influence on the nano-micelle size. Thermogravimetric analysis (TGA) of wood treated with resin and PCM showed enhanced char residue at elevated temperature. Fourier-transform infrared spectroscopy (FTIR) revealed a possible interaction between Kraft lignin and glyoxal. The infrared imaging suggested the ability…
C-F Lin, O Karlsson, D Jones, D Sandberg
Modelling the service life of wood in ground contact – Verification of remotely sensed soil data from the reanalysis dataset ERA5-Land using in-situ measurements at a test site of utility poles in Eastern Norway
2024 - IRG/WP 24-41003
…moisture and temperature estimates from the 5th European reanalysis (ERA5-Land) dataset with in-situ measurements to assess the accuracy and applicability of ERA5-Land data for modelling the service life of wood in ground contact. The ERA5-Land soil temperature estimates showed a moderate correlation with the in-situ…
U Hundhausen, P B van Niekerk, B Marais
Assessment of historical pilings from Lisbon
2024 - IRG/WP 24-41004
…of decay in the first instance, whilst more detailed analysis using Computed Tomographic (CT) Scanning has allowed internal assessment of the poles. Results reported show many of the poles were suitable for extended service life, whilst the use of CT scanning gives clear 3-dimensional evidence of levels of…
D Jones, S Duarte, J A J Huber, L Nunes
Modelling wood moisture content in outdoor conditions from measured data
2024 - IRG/WP 24-41005
…relative humidity, and temperature were used in a finite distributed lag model to account for present and previous weather records. Issues of collinearity were addressed by ridge regression. The resulting model was, in general, able to describe the important features of different wood species. However, large…
J Niklewski, P B van Niekerk, L Meyer-Veltrup, J Sandak, C Brischke
Changes in decay risk of wood in ground contact over Europe, from analysis of historic climate conditions
2024 - IRG/WP 24-41008
Changing climate conditions will affect global temperature and precipitation patterns, shifting some geographical areas into states that are more suitable for fungal wood decay. Climate normals, which are taken over a 30-year period, capture vast spatial and t…
P B van Niekerk, B N Marais, G Alfredsen, C Brischke
Leaching and chemical redistribution of CCA components in refractory heartwood of E. nitens
2024 - IRG/WP 24-41011
…differ statistically from background levels. Comparative analysis with other studies indicated consistent leaching patterns, emphasizing the low leachability and effective fixation of CCA. The study contributes valuable insights for understanding leaching patterns and chemical migration, especially for hardwoods,…
J R Vargas, L Yermán, K C Wood, T Singh
Analysis and performance of spruce alternative species and discarded wood for windows production
2024 - IRG/WP 24-50386
Climate change is having a significant impact on European forestry, particularly on the softwood species used for window frames. This study investigates potential replacement tree species for spruce (Picea abies), the predominant material for window frames. We…
B Lesar, J Levanič, M Humar, A Treu
Unlocking the potential of tropical fast-growing hardwood species
2023 - IRG/WP 23-11010
Social forestry or community managed forestry practices have been promoted as an inclusive way to mitigate climate change through the framework of the UNFCCC scheme of the Reduce Emission Deforestation and forest Degradation (REDD+) programme. Fast growing woo…
S Fauziyyah, R Wimmer, C Brischke
The cellulose binding mechanism of a novel cellulose binding domain from the brown-rot fungus Gloeophyllum trabeum
2023 - IRG/WP 23-11021
…cellulose degradation by CBH. From the results of genetic analysis, it have been known that almost brown-rot fungi lack CBM1. In our previous study, however, it was found that uncharacterized C-terminal domain in a lytic polysaccharide monooxygenase from the brown-rot fungus Gloeophyllum trabeum had binding ability…
M Aoki, Y Kojima, M Wada, M Yoshida
Comparison of culturable fungi found on two types of modified wood cladding
2023 - IRG/WP 23-11025
…were identified from both buildings. Microscopic analysis of fungal material on each type of wood showed hyphae and yeast cells associated with one another in an amorphous matrix of dark-pigmented material. Future investigation of the physiological characteristics of the isolated strains could provide…
G Presley, J Cappellazzi, B Held, R Blanchette
Analytical retentions of active ingredients in H2F treated framing over a 12-year period
2023 - IRG/WP 23-20702
The H2F hazard class in Australia was developed to treat internal framing timber with a surface application of an insecticide, to control mainly termites. Two of the actives approved in AS 1604.1-2010 (and subsequent revisions) for this hazard class are bifen…
A Siraa
Simulations of microclimates for wood-decaying fungi in the built environment using environmental analysis
2023 - IRG/WP 23-20703
Simulations of fungal decay risk were run on two similar building geometries exposed to typical annual climate conditions of two different geographical locations, Brunswick (Germany) and Cairns (Australia). The simulations were conducted to capture the effect…
P B van Niekerk, J Niklewski, S H Hosseini, B N Marais, I Frimannslund, T Kringlebotn Thiis, C Brischke
Tall oil in combination with eugenol for wood protection
2023 - IRG/WP 23-30787
…based on both uptake (approx. 600 l/m3) and penetration analysis using FT-IR.
Addition of tall oil was hypothesized to decrease leaching of eugenol. However, the addition of methanol (for viscosity and retention decreasing purposes) probably induced some evaporation of eugenol already during the drying step…
R Ringman, M Westin
The influence of chemical and thermal modification on homogeneity between sapwood, heartwood, and transition wood of short rotation teak
2023 - IRG/WP 23-40961
…by Fourier Transform Infrared Spectroscopy (FT-IR) analysis. The retentions values for furfurylation treatment were higher than that of GMA-thermal treatment. Sapwood presented the highest mass change, moreover both the transition and the heartwood were similar in the value after furfurylation and GMA-thermal…
R Martha, B George, W Darmawan, P Gerardin
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 hazar…
M Shirmohammadi, M R Karbaschi, B Hassan, W Leggate
The appropriateness of central one-ninth or core retentions as a means of demonstrating penetration compliance
2023 - IRG/WP 23-40976
…forward, assuming that an analytical method exists for the analysis of the preservative active ingredient(s) in question. Traditionally the penetration of preservatives has been assessed visually, either through being able to distinguish treated from untreated areas, e.g. as in the case of creosote, or through the…
D Humphfrey, B Skewes
Multi-scale Experimental Study on Self-sustained Smouldering of CCA-treated Timber Poles
2023 - IRG/WP 23-40988
…infrastructure can self-sustain, destroying the timber elements, as the chromium and copper present in the CCA can act as catalysts of the smouldering combustion. While smouldering occurrences have been well described, there are no standard methods for assessing the characteristics of this phenomenon either in…
W Wu, L Yerman, J J Morrell, F Wiesner
Optimization of furfurylic alcohol/tannin ratio to improve the performance of biosourced thermoset resins for wood protection
2023 - IRG/WP 23-40994
…a treatment resistant to leaching and decay. Thermal analysis shows that treatments with tannin or furfuryl alcohol alone or mixture of both chemicals improve thermal resistance of treated wood compared to untreated wood.
E Azadeh, A Pizzi, P Gérardin, C Gérardin-Charbonnier
Enhanced durability of bio-based materials for green building
2023 - IRG/WP 23-50382
…of the bio-economy and a fit-for-purpose strategy, a SWOT analysis allows to focus on the many opportunities for enhanced durability of bio-based building products.
J Van Acker, L De Ligne, J Vand den Bulcke
Assessment of the condition of wooden mill in the area of Kovačevići in Bosnia and Herzegovina
2023 - IRG/WP 23-11030
…this region was cut off from electricity. The laboratory analysis revealed that the respective mill was made of chestnut (Castanea sativa) and oak (Quercus sp.) wood. The sufficient durability of the respective wood species resulted in the good structural integrity of the mill. The surface of the wood materials in…
B Lesar, R Hasanagic, M Humar