Performance of Bark Beetle Damaged Norway Spruce Wood Against Water and Fungal Decay

Kržišnik, Davor; Lesar, Boštjan; Thaler, Nejc; Humar, Miha

doi:10.15376/biores.13.2.3473-3486

Cited by 9 publications

(17 citation statements)

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“…A new concept for characterizing the durability of wood-based materials and predicting the service life of wood was recently proposed by Meyer-Veltrup et al [13,14], based on the material-inherent protective properties, the moisture performance and the climate-and design-induced exposure dose of wooden structures. This approach has been successfully applied to untreated wood [15][16][17] and was validated on historical objects from WWII made of spruce wood [54].…”

Section: Modelling Decay Rates Of Treated and Modified Woodmentioning

confidence: 99%

The Performance of Wood Decking after Five Years of Exposure: Verification of the Combined Effect of Wetting Ability and Durability

Humar

Kržišnik

Lesar

et al. 2019

Forests

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Wood is one of the most important construction materials, and its use in building applications has increased in recent decades. In order to enable even more extensive and reliable use of wood, we need to understand the factors affecting wood’s service life. A new concept for characterizing the durability of wood-based materials and for predicting the service life of wood has recently been proposed, based on material-inherent protective properties, moisture performance, and the climate- and design-induced exposure dose of wooden structures. This approach was validated on the decking of a model house in Ljubljana that was constructed in October 2013. The decay and moisture content of decking elements were regularly monitored. In addition, the resistance dose DRd, as the product of the critical dose Dcrit, and two factors taking into account the wetting ability of wood (kwa) and its inherent durability (kinh), were determined in the laboratory. DRd correlated well with the decay rates of the decking of the model house. Furthermore, the positive effect of thermal modification and water-repellent treatments on the outdoor performance of the examined materials was evident, as well as the synergistic effects between moisture performance and inherent durability.

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Section: Modelling Decay Rates Of Treated and Modified Woodmentioning

confidence: 99%

The Performance of Wood Decking after Five Years of Exposure: Verification of the Combined Effect of Wetting Ability and Durability

Humar

Kržišnik

Lesar

et al. 2019

Forests

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“…The results have indicated that the most popular stain fungus is Lasiodiplodia theobromae, which can seriously attack rubberwood in less than 3 days [35][36][37][38][39]. Additional results have shown that the mechanical properties of stained wood not only did not obviously diminish, but also were slightly enhanced [39][40][41][42]. In recent years, several papers paid attention on the decoration of wood dyed with blue stains [11,26,41].…”

Section: Introductionmentioning

confidence: 99%

“…Additional results have shown that the mechanical properties of stained wood not only did not obviously diminish, but also were slightly enhanced [39][40][41][42]. In recent years, several papers paid attention on the decoration of wood dyed with blue stains [11,26,41]. This paper mainly studied the relationship between L. theobromae and rubberwood, sought the path that how the fungi enter the rubberwood, analyzed the degradation of fungi on wood component, and physical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of rubberwood (Hevea brasiliensis) dyed with Lasiodiplodia theobromae

Zhao

Zhang

et al. 2019

J Wood Sci

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Blue staining on rubberwood (Hevea brasiliensis) is a common kind of defect. There currently exists much research focused on the prevention and control of blue staining. However, little research has been concentrated on the utilization of blue staining for green dyeing. The research conveyed in this paper primarily used Lasiodiplodia theobromae to dye rubberwood, and used scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), X-ray diffraction (XRD), and fourier transform infrared spectrometer (FTIR) to analyze the commission internationale eclairage (CIE) L*a*b* value of color, the contact angle, the pH value, 24-h water absorption, mass loss ratio, and compressive strength in increments between 5 and 40 days. The results found that the color of rubberwood became darker and more uniform, and that the surface dyed with fungi can reach a super-hydrophobic state. With the increase of time, the pH value of rubberwood changed from acidic to alkaline. Furthermore, hyphae entered the wood mainly through vessels for their large pore diameter, and reduced water absorption. Mass loss ratio increased gradually between 5 and 40 days. The research in this paper concludes that the microorganism was an effective method of wood dyeing, and lays a foundation for further research. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…The long-term efficacy of biocide treatments is closely related to the wood permeability and its surface free energy (SFE) 24 – 28 . The Norway spruce ( Picea abies ) wood, used as model material in this experiment, is widespread in Europe 15 , 29 , 30 . Number of works have dealt with increasing its durability, including its low permeability for preservatives 31 – 33 .…”

Section: Introductionmentioning

confidence: 99%

Lavender oil as eco-friendly alternative to protect wood against termites without negative effect on wood properties

Šimůnková

Hýsek

Reinprecht

et al. 2022

Sci Rep

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Timber suffers from various biological damages. Recent efforts aim on nature-friendly sustainable technologies of wood protection to replace classical synthetic agents having usually negative impact on many non-target organisms including man. This research investigated the biocidal effectiveness of lavender oil (LO) in protecting the Norway spruce (Picea abies) wood against the termites Reticulitermes flavipes and the brown-rot fungus Rhodonia placenta. Following, selected physical characteristics of spruce wood treated with LO were evaluated: colour changes, roughness, surface wetting with water and surface free energy (SFE). Experiments showed that LO increased the resistance of spruce wood to termites nearly to the level of its treatment with commercial biocide based on trivalent boron and quaternary ammonium salt. The additional hydrophobic treatment of wood ensured its full termite-resistance even after artificial weathering in Xenotest and leaching in water according to EN 84, respectively. It shows a high potential of LO to protect wood against termites. Adversely, the effectiveness of 5% LO against rot was not sufficient. The colour of the oil-treated wood was preserved, its roughness increased slightly, and wetting and SFE led to a positive change, improving the adhesion of potentially applied coatings or adhesives for exterior exposures.

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Performance of Bark Beetle Damaged Norway Spruce Wood Against Water and Fungal Decay

Cited by 9 publications

References 0 publications

The Performance of Wood Decking after Five Years of Exposure: Verification of the Combined Effect of Wetting Ability and Durability

The Performance of Wood Decking after Five Years of Exposure: Verification of the Combined Effect of Wetting Ability and Durability

Physical and mechanical properties of rubberwood (Hevea brasiliensis) dyed with Lasiodiplodia theobromae

Lavender oil as eco-friendly alternative to protect wood against termites without negative effect on wood properties

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