Prediction model based on chemical composition change for the mechanical degradation of Korean pine (Pinus koraiensis) after brown-rot fungi (Gloeophyllum trabeum) invasion
Abstract
In order to predict the mechanical properties of Korean pine after brown-rot decay based on its chemical composition change, 252 samples were prepared and exposed to a 14-week accelerated laboratory decay test using the brown-rot fungus Gloeophyllum trabeum. The mass loss, parallel-to-grain compressive strength, parallel-to-grain tensile strength and bending strengths were tested. Then chemical components and scanning electron micrograph analysis were conducted every two weeks. Results indicated that the mass loss rates of the samples increased with the increasing decay time and were negatively correlated with the sample volume. The strength loss rates were positively correlated with the decay time and mass loss rates. After 14 weeks the average strength loss rates of the parallel-to-grain compressive, tensile and bending samples reached 32%, 41% and 41%, respectively. Strengths degradation was found sensitive to the change of cellulose and hemicellulose contents. Further, mathematical regression models were proposed based on the content changes of the cellulose and hemicellulose to quantitatively predict the degradation of the strengths of Korean pine after brown-rot decay.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 31971588
Award Identifier / Grant number: 51878550
Funding source: Shaanxi Natural Science Basic Research Program
Award Identifier / Grant number: 2021JC-44
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: The authors gratefully acknowledge the funding support received from the National Natural Science Foundation of China (grant no. 51878550 & 31971588) and the Shaanxi Natural Science Basic Research Program (grant no. 2021JC-44).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/hf-2021-0082).
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Artikel in diesem Heft
- Frontmatter
- Original Articles
- Classification of wood knots using artificial neural networks with texture and local feature-based image descriptors
- Modeling of radial variations in wood properties and comparison of juvenile and mature wood of four common conifers in Mongolia
- Estimating moisture content variation in kiln dried Pacific coast hemlock
- Towards understanding kraft lignin depolymerisation under hydrothermal conditions
- Investigation of acid hydrolysis for carbohydrate analysis in kraft black liquor
- Wavelength-dependent photodegradation of wood and its effects on fluorescence
- Prediction model based on chemical composition change for the mechanical degradation of Korean pine (Pinus koraiensis) after brown-rot fungi (Gloeophyllum trabeum) invasion
- Mineralization treatment of European oak heartwood with calcium oxalate for improved fire retardancy
- Experimental investigation on the effect of accelerated ageing conditions on the pull-out capacity of compressed wood and hardwood dowel type fasteners
- Annual Reviewer Acknowledgement
- Reviewer acknowledgement Holzforschung volume 75 (2021)
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Classification of wood knots using artificial neural networks with texture and local feature-based image descriptors
- Modeling of radial variations in wood properties and comparison of juvenile and mature wood of four common conifers in Mongolia
- Estimating moisture content variation in kiln dried Pacific coast hemlock
- Towards understanding kraft lignin depolymerisation under hydrothermal conditions
- Investigation of acid hydrolysis for carbohydrate analysis in kraft black liquor
- Wavelength-dependent photodegradation of wood and its effects on fluorescence
- Prediction model based on chemical composition change for the mechanical degradation of Korean pine (Pinus koraiensis) after brown-rot fungi (Gloeophyllum trabeum) invasion
- Mineralization treatment of European oak heartwood with calcium oxalate for improved fire retardancy
- Experimental investigation on the effect of accelerated ageing conditions on the pull-out capacity of compressed wood and hardwood dowel type fasteners
- Annual Reviewer Acknowledgement
- Reviewer acknowledgement Holzforschung volume 75 (2021)