IRG Documents Database and Compendium



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Moisture uptake in CLT during the construction phase: real construction conditions versus specimens exposed to environment
2025 - IRG/WP 25-41019
…humidity, and wood moisture content) from a Mass Timber Building case study and 8-month hygrothermal data from CLT specimens directly exposed to weather. For this purpose, more than 80 pairs of insulated electrodes were installed in the case study, which were distributed in different layers of 26 CLT panels (12…
D Lima, S Duarte, J M Branco, L Nunes (†)


A Case Study of Vogvarjeva hiša, a Local Ethnographic Museum
2025 - IRG/WP 25-41027
…important element of the region’s cultural heritage. The building was constructed from local timber on stone foundations and reflects the traditional rural building techniques of the Gorenjska region. Since it was declared a cultural monument in 1985, it has functioned as an ethnographic museum and offers valuable…
D Kržišnik, L Kopač, D Jones, M Humar


Biocomposites based on fungal mycelium and beech particles impregnated with BPCM (bio-phase change material) for thermal energy storage
2025 - IRG/WP 25-41034
The building sector is a major contributor to Europe's carbon emissions, and transition to a bio-based economy is essential for achieving long-term sustainability goals. The European Union has set ambitious targets for climate-neutral heating and cooling by 2050,…
E Nigrone, F De Francesco, J Conti, M Jebrane, M Nazari, N Terziev, S Palanti


Investigation of Pressure-Treated Foundations with Wood Preservative and Termite Control in Existing Wooden Houses in Japan
2025 - IRG/WP 25-50402
…to the reuse of existing houses and the reuse of building materials during demolition. We investigated the extent to which the pressure-treated foundations with wood preservative and termite control agents undergo aging in actual properties. As a result of the investigation, the collected samples showed…
K Usami, T Kawada, H Ishiyama


WoodStock: Empowering climate-smart, circular, and zero-waste use of underutilized wood from the forest and building stock in the construction sector to support the New European Bauhaus
2025 - IRG/WP 25-50405
…the forest-based sector to decarbonisation strategies for buildings, both in terms of operational emissions, embodied emissions, and carbon removals. WoodStock is a multifaceted project dedicated to advancing climate-smart wood construction practices in alignment with the New European Bauhaus (NEB) initiative. A…
L De Ligne, J Van Acker, J Van den Bulcke


Timber reuse and circularity: Insight from Norway's SirkTre and CircWOOD initiatives
2025 - IRG/WP 25-50409
…the EU’s decarbonisation strategy, particularly in the building sector, which faces challenges related to climate adaptation, resource constraints, and rising costs. The four-year SirkTRE project aims to improve circularity in the timber industry by developing standards, promoting reuse, and expanding market…
K Nore, L Ross


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
…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 the most of the characteristics of wood. Common building and civil…
K Yamamoto, T Osawa, R Noda


Time-lapse evaluation of Aureobasidium pullulans growth on selected lignin derivatives and chitosan
2024 - IRG/WP 24-11032
Wood, often referred to as the “building material of the 21st century”, has gained recognition as an attractive alternative to several traditional building solutions. To enlarge the application of wood, several properties including biotic and abiotic degradation resistance need to be…
Gubensek, F Poohphajai, A Tosic, K Butina Ogorelek, W Pajerski, A Cernosa, V Hribljan, A Sandak


Wood above ground project – Results and future plans
2024 - IRG/WP 24-11041
…appearance, and displayed noticeable staining from knots. Building on the findings of this project and the growing public interest, DTI is launching a new initiative focusing primarily on modified and treated wood. The project aims to showcase the behavior of different wood modifications over time in various…
A W Christof, R Digaitis, P Fynholm, J Stenbaek, N Morsing, B Lindegaard


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
…conditions, particularly within the intricacies of the building envelope. To address this limitation, a set-up is needed in which we can test a building envelope in different moisture conditions, mimicking as close as possible real-life situations. Moreover, by employing advanced tools like X-ray CT scanning and…
J Van den Bulcke, J Van Acker, M Delbeke, A Blommaert, N Van Den Bossche, M Steeman, L De Ligne


Barriers of polyglycol/borate treated wood prevent termite attack to untreated wood above them in 10-year field tests
2024 - IRG/WP 24-20709
…field test sites. Results of 10-yr. field tests for these building components and the untreated wood exposed above them are presented. It is not surprising that the treated wood was protected from termite attack. However, despite large populations of termites being present in the soil beneath the test units, no…
K W Ragon, J D Lloyd, T L Amburgey


Why preserved wood is used for infrastructure
2024 - IRG/WP 24-20711
…of civilization. Wood is a remarkable and renewable building material, offering high strength, light weight, flexibility, and availability. Preservation by creosote treatment adds great durability to the wood products. Creosote itself is a byproduct of coke and gas production from coal. Creosote-treated…
S T Smith


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
Wooden products in buildings are major sources of fuel for fire outbreaks. Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of wood species commonly used in buildings were evaluated. The timber species utilized in this…
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
Cross-laminated timber (CLT) has emerged as a revolutionary building material, offering a sustainable alternative to traditional construction methods. By layering and bonding multiple layers of wood at right angles, CLT creates a robust and versatile structural element capable of supporting significant loads while…
M Chen, S Uphill, J Hilsenbeck, A Hughes


Natural weathering of modified pine and Eucalyptus woods by surface charring
2024 - IRG/WP 24-30801
…anticipated to extend the lifespan of wooden components in building facades; however, visual deterioration of charred cladding materials has become a notable concern. This study, conducted through international collaboration, aimed to assess the resistance of bio-based facade materials to weathering in the Turkish…
E E Soyturk, E N Kavakli, S N Kartal, C M Ibanez


Manufacturing of bamboo hybrids with high strength, superior fire retardancy, and dimensional stability
2024 - IRG/WP 24-30808
…attributes, has found extensive use in decorative building materials and glue-laminated beams. However, the inherent challenges of dimensional instability and flammability in natural bamboo restrict its broad application. This research introduces a range of environmentally friendly techniques aimed at…
W He, Rui Wang, W Li, G Hu, T Singh, Q Fu


Developing thermal-energy storage systems based on Kraft lignin-glyoxal and organic phase-change material modified wood
2024 - IRG/WP 24-30810
…research contributes to the development of sustainable building materials with improved thermal-energy storage properties.
C-F Lin, O Karlsson, D Jones, D Sandberg


Evaluation of vacuum borate treated spruce or pine CLT in an above ground protected test in southern Mississippi
2024 - IRG/WP 24-41001
…timber (CLT) has become a popular wood composite in large building applications that were previously limited to concrete and steel. To extend service and prevent biological attack, chemical protectants are often applied to wood. Cross laminated timber panels are not typically treated, in part due to a lack of data…
M E Mankowski, A Taylor, G T Kirker


Service life of poplar, a low durability hardwood
2024 - IRG/WP 24-41007
Hybrid poplar is the most common plantation hardwood of the temperate climate zone and is complementary to natural stands of aspen with mainly plantations in Europe and China. Poplar wood has been considered as a valid alternative for many of the construction…
J Van Acker, X Jiang, L De Ligne, J van den Bulcke


Performance of Douglas-fir cross laminated timber (CLT) subjected to elevated humidity in a ground proximity field test for 6 years
2024 - IRG/WP 24-41010
…an in-service member could not be fully treated after building construction. Samples were monitored for moisture and biological attack annually for the next six years. Moisture contents of the samples were high throughout the duration of the test. Sample mass losses after six years were elevated in the control…
M E Mankowski, J J Morrell, T G Shelton, G T Kirker


Field facility for conducting wood durability tests at LSU Agricultural Center
2024 - IRG/WP 24-41012
…above-ground preservative comparative tests and/or building component durability tests, and basic termite biology / behavior / movement studies. Along with site weather, and soil conditions, several demonstration study data at these sites are discussed in the presentation.
Q Wu, J Curole


Effect of enzymatic inhibitors on the population of Reticulitermes grassei and their associated microbiota
2023 - IRG/WP 23-11008
…owing to the damage they cause to wood, wood products, building materials, agricultural products and forests. There are many methods for its control, but many of them cause negative environmental effects due to their toxicity. In termites, dietary change or antibiotic treatment may alter the gut environment with…
S M Santos, M T Troya, F Llinares, P Colina, E García, M Álvarez, L Robertson


Natural durability of 9 tropical species suitable for round wood timber building: fungi and termites laboratory screening tests
2023 - IRG/WP 23-11013
…be used, directly as round wood, in construction timber building. A selection of abundant species was done and characterization tests were performed to assess their usability as building material. The aim of this work was to determine the natural durability of wood from 9 selected Guyanese species. Oxandra…
M Leroy, K Candelier, J Damay, J Bossu, R Lehnebach, M-F Thevenon, J Beauchene, B Clair


Morphological observation of wood at the early stages of decay in brown rot and white rot
2023 - IRG/WP 23-11020
…the fungal species causing biodeterioration for wood building, are generally classified into white-rot, brown-rot and soft-rot fungi based on their decay modes. Since white-rot and brown-rot fungi are known to reduce wood strength significantly, it is important to clarify the mechanisms of their wood…
R Tsukida, T Hatano, Y Kojima, Y Horikawa, S Nakaba, R Funada, M Yoshida


Japanese traditional wooden building construction project in Bangkok - Part 2 Verification of termite control method
2023 - IRG/WP 23-11022
We have confirmed the effectiveness in Thailand of chemicals and stainless steel mesh that have been proven effective in Japan. Stake and container tests were conducted and the following results were obtained: 1. There is no damage on specimens covered with…
H Ishiyama, S Murakami