European Journal of Wood and Wood Products最新文献

Value chain analysis of domestic oak wood processing in the Republic of Korea

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-02 DOI: 10.1007/s00107-025-02249-5

Yoon-Seong Chang, Hee Han

{"title":"Value chain analysis of domestic oak wood processing in the Republic of Korea","authors":"Yoon-Seong Chang, Hee Han","doi":"10.1007/s00107-025-02249-5","DOIUrl":"10.1007/s00107-025-02249-5","url":null,"abstract":"<div><p>This study aimed to analyze an optimal utilization system to maximize the economic value of domestic oak (<i>Quercus Mongolica</i> Fisch. ex Ledeb.) log in the value chain to expand the use of wood resources and by-products. Initially, visits were made to medium-density fiberboard (MDF) factories and other companies that utilize domestic oaks to assess the size and quality of products at each stage of use, as well as the status of by-product collection and sales. Furthermore, potential alternatives to wood processing or by-product utilization were explored to facilitate the transition to a bio-economical system. Subsequently, an analysis was conducted to identify the types and quantities of wood products that could be derived from oak and evaluate the economic and environmental benefits of usage scenarios if they were adopted as new alternative resources. Finally, based on the study findings, suggestions are made for future enhancements in the domestic wood distribution process and by-product utilization system, with a focus on the application of a forest-based bioeconomy. The production of flooring boards using high-frequency vacuum drying has been highlighted as a means to increase the value-added and extend the carbon storage period by promoting its use as a long-lived product. Therefore, in addition to endeavors to enhance the price competitiveness of domestic wood products and explore ways to leverage high value-added by-products, there is a need to invest in advancing technology to maximize the value-added potential of domestic wood products.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical properties of strip-like laminations made from hardwood

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-01 DOI: 10.1007/s00107-025-02246-8

Simon Lux, Johannes Konnerth, Andreas Neumüller

{"title":"Mechanical properties of strip-like laminations made from hardwood","authors":"Simon Lux, Johannes Konnerth, Andreas Neumüller","doi":"10.1007/s00107-025-02246-8","DOIUrl":"10.1007/s00107-025-02246-8","url":null,"abstract":"<div><p>The European Union pushes for a higher share of wood-based materials in the building sector. Consequently, making sufficient volumes of high-quality wood available is a major concern. Climate-driven forest conversion leads to an increasing share of hardwood trees in Central European forests. The use of hardwood species is currently uncommon in the building sector as hardwood species are not sufficiently covered by European standards for timber structures. In addition to this, lower material yields and increased tool wear are common in hardwood processing. Furthermore, grading hardwood species comes with major difficulties, leading to even lower yields and an assignment to strength classes worth improving, as only parts of the material can properly be assigned to strength classes. To substitute the board-based grading approach we produced a semi-finished product, “strip-like lamination” (SLL). Preselected, low-grade sawn hardwood from European beech (<i>Fagus sylvatica</i>) and oak (<i>Quercus spp.</i>) was used as raw material for the SLLs. Each lamination consists of multiple “strips”, stemming from different hardwood boards, mitigating the strength-limiting effect of various wood characteristics in these SLLs. This work provides the first comprehensive mechanical performance profile for SLLs from beech and oak including the finger joint performance. Furthermore, we show the extent of the desired homogenization of the raw material through non-destructive testing. The mechanical properties of beech SLLs exceed the requirements for European softwood strength classes. The results show great potential for SLLs in structural applications. SLLs should complement strength-graded structural timber in structural glued wood products, like glued laminated timber (GLT) and cross-laminated timber (CLT).</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of a strong, mildew resistant, flame-retardant, and smoke suppressing bamboo scrimber through a sustainable method

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-22 DOI: 10.1007/s00107-025-02238-8

Peisheng Li, Jiayu Xu, Anbo Pan, Mingyue Jiang, Yantao Xu, Xiaochun Zhang

{"title":"Preparation of a strong, mildew resistant, flame-retardant, and smoke suppressing bamboo scrimber through a sustainable method","authors":"Peisheng Li, Jiayu Xu, Anbo Pan, Mingyue Jiang, Yantao Xu, Xiaochun Zhang","doi":"10.1007/s00107-025-02238-8","DOIUrl":"10.1007/s00107-025-02238-8","url":null,"abstract":"<div><p>With the rapid development of the economy and society, problems such as high resource consumption and serious environmental pollution in traditional reinforced concrete buildings are becoming increasingly prominent. Bamboo scrimber is an effective substitute for green building materials, but there are some problems such as susceptibility to mildew and poor flame retardancy, which limit its application in the building industry. In this study, the alkaline pretreatment process was used to remove some nutrients from bamboo to improve mildew resistance, and phytic acid and magnesium hydroxide were loaded on the surface of the bamboo bundle to enhance the flame retardancy. The results showed that phytic acid and magnesium hydroxide could be effectively loaded on the surface of bamboo bundles, and the mechanical strength, mildew resistance, and flame retardancy of modified bamboo scrimber (M10-PB) have been effectively improved. Compared with unmodified bamboo scrimber, the flexural strength and flexural modulus of M10-PB increased by 33.72% and 36.61% to 155.26 MPa and 14.59 GPa, respectively; the mold infection rate has decreased from 100% at 5 d to below 20% at 28 d; the limiting oxygen index of M10-PB bamboo scrimber increased by 13.2%, and the total smoke emission decreased by 54.4%. This method can effectively improve the mildew resistance, flame retardancy and smoke suppression of bamboo scrimber while maintaining high mechanical strength, which helps to promote the application of bamboo in the construction field.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deformation measurement of twisted timber beam using UAV SfM photogrammetry and a new feature extraction algorithm

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-22 DOI: 10.1007/s00107-025-02245-9

Juan Ortiz-Sanz, Guillermo Bastos, Mariluz Gil-Docampo

{"title":"Deformation measurement of twisted timber beam using UAV SfM photogrammetry and a new feature extraction algorithm","authors":"Juan Ortiz-Sanz, Guillermo Bastos, Mariluz Gil-Docampo","doi":"10.1007/s00107-025-02245-9","DOIUrl":"10.1007/s00107-025-02245-9","url":null,"abstract":"<div><p>Drones facilitate the monitoring of large structures through feature extraction from point clouds generated through Structure-from-Motion photogrammetry. In the present study, we determined the deformation of a structural timber strip subjected to simultaneous bending and torsion. Three cameras were used. Two of them are pre-installed on the UAVs utilized, and the third is a consumer-grade Canon camera. All three were configured in flight mode. The geometry of the timber strip was generated through photogrammetry from the photos taken with each camera at a height of 1.5 m. The results were compared with the reference geometry, which was also created using the Canon camera on the ground at an average distance of 0.92 m. This reference geometry was previously validated in a preparatory project using extensometers with 1-µm precision. A Python-based algorithm was developed to automatically extract the position of the centroid and the rotation of each cross-sectional segment of the strip from UAV-based photogrammetric point clouds. Deformations measured by each of the three devices and the new algorithm are compared with actual deformation. The accuracy in measuring displacement and rotation of the centroid of strip cross-sections ranged between − 0.05 and 0.09 mm and between 0.00° and 0.24°, respectively.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02245-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compressive performance of laminated bamboo columns with glass fiber reinforced polymer

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-22 DOI: 10.1007/s00107-025-02237-9

Zhen Wang, Haitao Li, Rodolfo Lorenzo, Chaokun Hong

{"title":"Compressive performance of laminated bamboo columns with glass fiber reinforced polymer","authors":"Zhen Wang, Haitao Li, Rodolfo Lorenzo, Chaokun Hong","doi":"10.1007/s00107-025-02237-9","DOIUrl":"10.1007/s00107-025-02237-9","url":null,"abstract":"<div><p>This paper presents an investigation to check the feasibility of reinforcing laminated bamboo columns through the application of glass fiber reinforced polymer (GFRP) composites, with particular emphasis on examining the influence of slenderness ratio on the performance of GFRP reinforced columns. A comprehensive experimental program was conducted involving eighteen full-scale columns, which were categorized into six distinct slenderness groups. External GFRP wrapping was employed to enhance compression strength, as well as to restrain the outward local buckling deformation of the laminated bamboo column. Experimental observations revealed both compression and buckling failure modes. The results demonstrated that the implementation of GFRP reinforcement with a minimal volume fraction significantly enhanced both the load-carrying capacity and deformation ability of the laminated bamboo columns. A consistent inverse relationship was observed between the slenderness ratio and the ultimate load-carrying capacity of the specimens. To further validate and extend the experimental findings, a methodology for modeling the column specimens was developed using ABAQUS software, incorporating nonlinear analysis to simulate the behavior. The numerical simulations exhibited strong correlation with experimental results, thereby confirming the reliability and effectiveness of the proposed methods for potential similar engineering applications.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regional assessment of mold growth risk in light wood-framed wall envelope based on meteorological data-driven and neural network model

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-19 DOI: 10.1007/s00107-024-02156-1

Yanyu Zhao, Xinmiao Meng, Shiyi Mei, Xudong Zhu, Juan Yang, Ying Gao

{"title":"Regional assessment of mold growth risk in light wood-framed wall envelope based on meteorological data-driven and neural network model","authors":"Yanyu Zhao, Xinmiao Meng, Shiyi Mei, Xudong Zhu, Juan Yang, Ying Gao","doi":"10.1007/s00107-024-02156-1","DOIUrl":"10.1007/s00107-024-02156-1","url":null,"abstract":"<div><p>Wood is a renewable material ideal for environmentally friendly buildings, but wooden building envelopes may face mold growth risks across different climates. To ensure the long-term service life of wooden buildings in China, it is imperative to evaluate the mold growth risk in each region. Nevertheless, large-scale regional assessments require significant effort and time. This study proposes a method based on meteorological data and a neural network (NN) model for regional mold risk assessment in light wood-framed wall envelopes. The NN model, comprising a one-dimensional convolutional neural network (1D-CNN) and long short-term memory (LSTM), is trained on meteorological data from the hot summer and cold winter (HSCW) region, which is one of China's five climatic regions. It is validated using simulated data and one year of field monitoring data. Finally, the model predicts time series of relative humidity and temperature with a mold index from the empirical VTT model to assess mold growth risk in the HSCW region. The validation results with simulated data show good performance, with average R<sup>2</sup> values of 0.969 and 0.984 for predicting interior wall relative humidity and temperature, respectively. However, validation with monitoring data shows a decline in performance due to real-world complexities. The results of the risk assessment indicate that the wall used in this study is commonly at risk in the HSCW region. The proposed method is suitable for assessing mold risk in walls across diverse regional climates, thereby providing tailored improvements to the hygrothermal performance of walls.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced physico-mechanical properties and decay resistance of nano-silica-fortified furfuryl alcohol resin impregnated poplar wood

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-18 DOI: 10.1007/s00107-025-02243-x

P. Nagraik, S. R. Shukla, A. K. Sethy

{"title":"Enhanced physico-mechanical properties and decay resistance of nano-silica-fortified furfuryl alcohol resin impregnated poplar wood","authors":"P. Nagraik, S. R. Shukla, A. K. Sethy","doi":"10.1007/s00107-025-02243-x","DOIUrl":"10.1007/s00107-025-02243-x","url":null,"abstract":"<div><p>Wood modification by impregnating different types of nanomaterial-fortified polymeric resins from plant sources has emerged as a promising technique to enhance its various properties and improve performance against biodeteriorating agents. This study explores the enhancement of physico-mechanical properties and durability of <i>Populus deltoides</i> (poplar) wood by incorporating nano-silica (NS) into furfuryl alcohol (FA) during the furfurylation process. Three different concentrations (1%, 3%, and 5%) of NS dispersed in FA were impregnated in poplar wood using vacuum-pressure technique. Different properties such as water absorption (WA), anti-swelling efficiency (ASE), surface hardness, decay resistance against fungi and thermal stability of modified wood were evaluated. Morphological analysis using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) mapping was performed to study the distribution of NS within the wood structures. Chemical interactions amongst different components of modified wood were confirmed by Fourier-transform infrared (FTIR) spectroscopy. Results of the present study demonstrate that NS fortified furfurylated wood exhibited reduced WA (96%), improved ASE (72–79%), enhanced decay resistance (4–6% mass loss) and increased surface hardness (4% in the side grain and 40% in the end grain). Also, the improvements were observed in the thermal stability of wood by adding NS with FA. Analysis of data showed that 3% concentration of NS provided optimal results to improve properties of poplar wood. The use of renewable FA derived as by-products from agricultural resources, coupled with usage of low-concentration of nanomaterial, makes this approach environmentally sustainable, offering a green alternative to conventional treatments.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propolis extract as a bio-based modifier of urea-formaldehyde adhesive in particleboard production

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-17 DOI: 10.1007/s00107-025-02242-y

Jakub Kawalerczyk, Mateusz Barczewski, Magdalena Woźniak, Marcin Kuliński, Hilary Smogór, Dorota Dukarska, Radosław Mirski

{"title":"Propolis extract as a bio-based modifier of urea-formaldehyde adhesive in particleboard production","authors":"Jakub Kawalerczyk, Mateusz Barczewski, Magdalena Woźniak, Marcin Kuliński, Hilary Smogór, Dorota Dukarska, Radosław Mirski","doi":"10.1007/s00107-025-02242-y","DOIUrl":"10.1007/s00107-025-02242-y","url":null,"abstract":"<div><p>The presented research concerned the use of propolis extract as a modifier of urea-formaldehyde (UF) adhesive for the production of particleboard. The adhesive formulations differed in both the modifier content (1, 3 and 5%) and the extract concentration (50 and 70%). The results of differential scanning calorimetry, rheometric analysis of the cross-linking process and thermogravimetric analysis showed an acceleration of the curing process, a slight increase in viscosity and a decrease in the thermal stability of the cured adhesive mixtures. Moreover, the Fourier transform infrared spectroscopy analysis of the cured adhesives showed a reduction in the intensity of the peaks characteristic of the UF adhesive due to the applied modification. Furthermore, particleboards bonded with the mixtures containing 3 and 5% of 70% extract and 5% of 50% extract were characterized by significantly improved strength properties (bending strength, modulus of elasticity, internal bond), better water resistance (thickness swelling, water absorption) and reduced formaldehyde content. The adhesive mixture modified with 5% of 70% propolis extract was considered the optimal variant providing the most significant improvement in the properties of produced particleboards.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting algorithms for predicting the bond properties of timber and fiber reinforced polymer (FRP) under thermal cycling using single-lap shear tests

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-17 DOI: 10.1007/s00107-025-02240-0

Farzad Lotfalipour, Alireza Javid, Vahab Toufigh

{"title":"Boosting algorithms for predicting the bond properties of timber and fiber reinforced polymer (FRP) under thermal cycling using single-lap shear tests","authors":"Farzad Lotfalipour, Alireza Javid, Vahab Toufigh","doi":"10.1007/s00107-025-02240-0","DOIUrl":"10.1007/s00107-025-02240-0","url":null,"abstract":"<div><p>Precise modeling of the bond properties between timber and fiber-reinforced polymer (FRP) at varying temperatures is crucial for structural integrity. This study uses boosting algorithms—XGBoost, LightGBM, and CatBoost—to model the impact of thermal cycles on the bond behavior of FRP-timber using single-lap shear tests. A comprehensive dataset of 150 experimental results was compiled and processed to train and test the models. Key parameters were density, stiffness, temperatures, thermal cycling, energy absorption, ultrasonic pulse velocity (UPV) measurements, and fiber types (glass, carbon, and aramid). Genetic algorithms (GA) and a 5-fold cross-validation (CV) technique were employed to fine-tune the hyperparameters of the boosting algorithms. The results demonstrated the superior accuracy of the CatBoost model in predicting the bond characteristics. This comprehensive evaluation highlights the critical factors influencing FRP-timber composite mechanical behavior. Feature contribution analysis revealed that temperature and thermal cycles exert the most significant impact on the bond properties. The types of fibers (glass, carbon, and aramid) showed relatively low importance. This study shows that FRP-timber interface properties inform accurate predictive models and design guidelines for varying thermal cycles.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wood dowel welding without a pilot hole– an investigation into joining low-density plywood

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-03-17 DOI: 10.1007/s00107-025-02241-z

Kevin Vitzthum, Florian Feist, Thomas Krenke

引用次数: 0