Your search resulted in 2024 documents. Displaying 25 entries per page.
Cellulose nanomaterials in growth media for wood decay fungi
2024 - IRG/WP 24-11035
…the European CSN Standard EN 113-2 wood decay durability test. The inclusion of CNFs did not significantly affect fungal growth rates on media or in wood decay tests. Rheological evaluations showed that gels from standard malt extract agar were significantly stronger and stiffer than those prepared by a two-thirds…
K M Ohno, R A Arango, R Sabo, C M Clemons, G T Kirker, A B Bishell
Cellulose nanomaterials in growth media for wood decay fungi
2024 - IRG/WP 24-11035
…the European CSN Standard EN 113-2 wood decay durability test. The inclusion of CNFs did not significantly affect fungal growth rates on media or in wood decay tests. Rheological evaluations showed that gels from standard malt extract agar were significantly stronger and stiffer than those prepared by a two-thirds…
K M Ohno, R A Arango, R Sabo, C M Clemons, G T Kirker, A B Bishell
Unlocking the potential of paulownia in Malaysia: Durability assessment to mold
2024 - IRG/WP 24-11043
…middle, and bottom) were converted to (7 x 20 x 70) mm test blocks and exposed to A. brasiliensis in a 4-week agar dish test following the ASTM D4445 standard. Weekly assessments were carried out to observe the progress of mold growth on the tested samples compared to rubberwood as virulence control. Results…
S Lipeh, T Khadiran, N A Siam, R Jalil, N F N M Isa
On the use of miniaturized wood specimens in fungal decay experiments – mini-blocks versus EN 113 test specimens
2024 - IRG/WP 24-11044
…experiments has been a longstanding practice because these tests offer quicker results than field tests. Various methods, including miniaturized specimen formats and different incubation periods, have been explored to expedite decay processes and assess wood preservation efficacy. The 'mini-block' format, suggested…
C Brischke, G Alfredsen
Bio-durability and weathering performances of cardanol-treated wood
2024 - IRG/WP 24-30809
…cardanol, and the mass gain without and with leaching tests was measured. Then the cardanol-treated wood samples were subjected to AWPA E10 soil block test and artificial weathering test. It was found that the mass gain of solid cardanol-treated pine (83.8 ± 2.6% and 81.5 ± 2.6% for samples without and with…
L Liang, McDonald, A G, L Cai
Detection of increased metal cations after wood decay using Chromeazurol-S
1997 - IRG/WP 97-20112
…of utility pole decay (Esyln, 1979), ii) a chemical spot test for aluminum in wood (Kukachka and Miller, 1980) and fungal production of iron III-binding siderophores in agar (Srinivasan et al., 1993, 1994). The objective of this study was to determine the mechanism of color change from pink (negative) to blue…
F Green III, U Srinivasan, R B Miller
Accelerated testing for out of ground contact using natural biological preconditioning: Part 2
1997 - IRG/WP 97-20108
…during outdoor exposure prior to laboratory decay testing. An EN 84-type leach trial was carried out on unexposed samples. Periodic microbial isolations, moisture content, permeability and weight loss tests were also conducted. The experiment ran for 12 months. The colonisation of the miniblocks by…
S Molnar, D J Dickinson, R J Murphy
Natural durability of tropical plantation woods case in teak
2023 - IRG/WP 23-11011
…through sapwood to heartwood by an accelerated decay test according to JIS Z2101 using a white rot fungus, Trametes versicolor, and a brown rot fungus, Fomitopsis palustris. Wood blocks, 20×20×10 mm in size were cut from the disks across the radius of the stem via pith. The percentage of mass loss of each…
K Yamamoto
Evaluation of the effectiveness of soaking of high-temperature plywood in low-temperature oil-based wood
2023 - IRG/WP 23-40991
…performance was evaluated using a sand-block laboratory test with Fomitopsis palustris and Trametes versicolor. It was confirmed that sufficient antifungal performance could be achieved by soaking the specimens in a state above a certain temperature.
T Miyauchi, S Isaji, H Shibui, N Furuta, J Miyazaki, H Matusnaga
Protection of wood blocks treated with Trichoderma isolates selected on the basis of preliminary agar screening studies
1996 - IRG/WP 96-10154
…killed 16 of 19 target fungi (Tucker and Bruce, 1995). Testing of these isolates in wood was required to assess their performance at preventing decay of wood blocks. Standard testing of chemical wood preservatives is used to determine the toxic concentrations of preservative required to protect the wood against…
E J B Tucker, A Bruce, H J Staines
In Vitro Growth of the Basidiomycetes Physisporinus vitreus strains in various conditions in comparison with some white rot fungi
2022 - IRG/WP 22-10987
The paper has preliminary test results to select Pysisporinus vitreus fungal strains for further experiments in a large research project on copper tolerance of P. vitreus by chemotropic test, choice test, and agar plate toxicity tests and determination of the effect of various ions on…
E E Soytürk, S N Kartal
Combining MRI and X-ray CT to monitor fungal decay of plywood and OSB in a lab test
2022 - IRG/WP 22-20683
…durability data is available for solid wood, the standard tests, mainly measuring the mass loss caused by decay fungi after sixteen weeks, do not offer much information on what is going on inside the wood during degradation. Notwithstanding that standard tests are excellent for testing the durability of a certain…
L De Ligne, T Núñez Guitar, C Vanhove, J Van Acker, J Van den Bulcke
Impregnation of wood with antifungal compounds from low-quality tree biomass
2022 - IRG/WP 22-30763
…impregnated wood was measured with a so-called mini-block test (modified EN 113). Wood of less durable conifers and deciduous tree species was impregnated in a vacuum-pressure chamber, whereat water solutions of the hydrophilic extracts were used. After impregnation, the retention of extracts in the wood matrix was…
V Vek, I Poljanšek, A Balzano, M Humar, P Oven
Utilization of Pressure Treated Lumber in Cross Laminated Timber Manufacture and its Impact on Bondline
2022 - IRG/WP 22-40953
…(PUR). Delamination, block shear and wood failure were tested according to the PRG-320 standard. The all-organic preservative treatment passed delamination test standards when pressure treated lumber was used to layup panels, while utilizing borate-treated lumber for panel manufacture resulted in failure.…
G Presley, C Wainscott, J Valenti, S Noble
The proposal for optimalization of the agar-block method for wood preservatives fungitoxic evaluation
1995 - IRG/WP 95-20065
…of agar-block method was presented by:
- selection of test fungal species and strains and central distribution of their pure cultures,
- change of the treatment and control samples exposure procedure,
- application of mathematical estimation of toxic value results,
- shortening the duration of fungitoxic test…
J Wazny
New conception for shortering the duration of fungitoxic test on wood preservatives. Part 1: State-of-art
1994 - IRG/WP 94-20044
…90 years focused of shortening the duration of fungitoxic test of wood preservatives is presented. Special attention was given to miniaturisation of wood specimens.
J Wazny, P Witomski
New conception for shortering the duration of fungitoxic test of wood preservatives. Part 3: Proposal for interlaboratory test on miniaturisation of wood specimens
1994 - IRG/WP 94-20053
…and IRG/WP 94-20052 the proposal for interlaboratory test on miniaturization of wood specimens is given.
J Wazny, J J Krajewski
New conception for shortering the duration of fungitoxic test of wood preservatives. Part 2: Computer-assisted miniaturisation of wood specimens
1994 - IRG/WP 94-20052
The mass loss of wood used as a criterion in the standarised agar-block method of evaluation of toxic value of preservatives depends upon the relationship between volume of specimens, their outspread planes and ratio of areas of particular anatomic sections. U…
J Wazny, K J Krajewski
Performance of bio-based building materials – durability and moisture dynamics
2020 - IRG/WP 20-20666
…fibre insulation boards (WF-A and WF-B). With the ‘paste test’, we assess whether these materials contain fungicidal components affecting decay. Additionally, we assess how they perform in an adapted mini-block test. We are able to show that fungicidal components are not always of major importance for the…
L De Ligne, J Caes, S Omar, J Van den Bulcke, J M Baetens, B De Baets, J Van Acker
Screening wood preservatives: Comparison of the soil block, agar block and agar plate tests
1993 - IRG/WP 93-20001
Several test procedures have been developed over the years to screen potential biocides for their value as wood preservatives. Each test has inherent advantages and disadvantages. In this paper the relative merits of the soil block, agar block and agar plate tests…
K J Archer, D D Nicholas, T Schultz
A comparative analysis of Coniophora olivacea (Fr. ex Pers.) Karst. and Coniophora puteana (Schum. ex Fr.) Karst. test strains
1993 - IRG/WP 93-20004
…of Coniophora olivacea (Fr. ex Pers.) Karst. used as a test fungus in Australia and other Pacific countries, and Coniophora puteana (Shum. ex Fr.) Karst. which is used in Europe. Comparisons included morphology, growth rate and dry mass of mycelium, decay capacity, influence of temperature, toxic value of CCA and…
J Wazny, L J Cookson
Determining the natural durability on xylarium samples: mini-block test, wood powder and chemical profiling
2019 - IRG/WP 19-10944
…and should be treated with care when sampling for testing, as these specimens are not only limited in size, but also have a significant historical and cultural value. This makes it impossible in most cases to retrieve standard specimen dimensions as required according to CEN/TS 15083-1 (2005). To gain…
V Deklerck, L De Ligne, J Van den Bulcke, E Espinoza, H Beeckman, J Van Acker
Development of accelerated decay test for CLT using a fungus grown on agar medium
2019 - IRG/WP 19-20664
…its durability of CLT. To develop the accelerated decay test for CLT regarding with the cross sections, we examined the acceleration of deterioration by contacting untreated CLT samples of the dimension 150×150×150 mm with fungus (Fomitopsis palustris) grown in agar medium in plastic container for 3 and 6…
T Miyauchi, K Kambara, W Ohmura, T Mori, H Matsunaga, N Hattori
Relative efficacy of various oxine copper formulations against brown-rot fungi
2019 - IRG/WP 19-30741
…to R. placenta and G. trabeum cultures in a soil-block test. After eight weeks, the weight losses of the cubes were examined in relation to the retention of the preservative in the cubes. The results suggested that all of the formulations were effective in preventing decay at retention values near the previously…
M Petruch, J Lloyd, A Taylor
Effect ofNano-Copper Oxide on Decay Resistance of Pistachio Twig-Plastic Composite
2019 - IRG/WP 19-30750
…ex fries) Karesten (BAM Ebw. 15) in a soil block decay test for three months in accordance with a modified ASTM D1413 test standard. Scanning electron microscopy (SEM) was used to examine the WPCs exposed to decay and to study the distribution of nano-copper oxide in the composite. No clear evidence of the sever…
M R M Farahani,S Pourabdollah