Effect of steam-drying treatment on moisture content, drying rate, color, and drying defects in juvenile wood of<i>Tectona grandis</i>from fast-growth plantations

Moya, Róger; Berrocal, Alexánder; Rodríguez-Solís, María; Muñoz, Freddy

doi:10.1080/07373937.2017.1280503

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…The proportion of collapse occurred for 7.3% of the total dried boards. Drying defects depend on the initial moisture content [ 5 , 23 , 24 , 25 , 26 ] and pith content [ 2 , 27 ] of the samples. From this study, it was noticed that 38.1% of the wood pieces consist of knots (dead and alive), and 25.82% consist of pith.…”

Section: Resultsmentioning

confidence: 99%

Investigating the drying characteristics of Anthocephalus chinensis (Lam.) A. Rich ex Walp wood

Ghosh¹,

Islam²,

Ghosh³

et al. 2022

Heliyon

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Section: Resultsmentioning

confidence: 99%

Investigating the drying characteristics of Anthocephalus chinensis (Lam.) A. Rich ex Walp wood

Ghosh¹,

Islam²,

Ghosh³

et al. 2022

Heliyon

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“…Furthermore, MC reflects the behavior of sawn wood. T. grandis wood presents uniform MC at the end of the drying process [30], while dried G. arborea wood is characterized by a great variability of MC [35]. Then, MC variability after drying probably influenced the differences in MC of G. arborea panels, the in higher MC in 3-layer CLT panels than in 5-layer CLT panels, hence the difference between these two configurations (Tab.…”

Section: Discussionmentioning

confidence: 99%

“…Tectona grandis is used in commercial reforestation in Latin America [29,30], while Gmelina arborea is widely used in Central America [31]. This specie, as G. arborea, are important in Costa Rica market, however their structural uses are limited [32].…”

Section: Introductionmentioning

confidence: 99%

CLT Fabricated with Gmelina arborea and Tectona grandis Wood from Fast-Growth Forest Plantations: Physical and Mechanical Properties

Mu駉z¹,

Moya²,

Moya³

et al. 2022

Journal of Renewable Materials

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Fabrication and use of Cross Laminated Timber (CLT) using tropical woods is still limited at present. Therefore objective of the present study aims to determine the possibility of using CLT panels of 3 and 5 layers, fabricated with Tectona grandis and Gmelina arborea wood using adhesive of isocyanate polymer emulsion system catalyzed with polymeric isocyanate. Delamination, water absorption, density, flexure test, compression and glue-line shear were evaluated using ANSI/APA PRG320-2012 ASTM D198 and ASTM D4761 standard. The results showed that CLT panels of T. grandis presented higher values of density, less water absorption and lower delamination, with no evident differences between the CLT of 3 and 5 layers. The high density of T. grandis resulted in higher values of the mechanical properties. The flatwise and edgewise flexure tests in 5-layer CLT panels of both species presented higher values of bending stiffness compared to those of 3-layer CLT panels. Further the bending stress values in 3-layer CLT panels were higher than for 5-layer CLT panels. As for shear stress in bending flatwise, in both species, 3-layer CLT surpassed 5-layer CLT panels, but in the edgewise test no differences were observed. The MOE and Fc in the compression test were superior in relation to the edgewise test. MOE and Fc in compression flatwise in 3-layer CLT was greater than in 5-layer CLT in both species, but edgewise these values were higher in 5-layer CLT panels. The most common failures were stress and delamination in the flexure test, whereas in the compression test these were: shearing, splitting and crushing. In the glue-line shear test no differences were observed between CLT panels of 3 and 5 layers for both species.

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“…Recent studies by Hamdan et al [42] and Chen et al [43] have observed that vessel diameter, fiber length, and fiber wall thickness significantly affected the density and mechanical properties of wood. In addition, juvenile and mature wood played a crucial role in determining the anatomical characteristics that will impact the wood quality [17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Anatomical Characteristics Affecting Wood Qualitymentioning

confidence: 99%

“…As described by Kozlowski [17], Tsoumis [18], and Moore and Cown [19], juvenile wood forms near the pith and exhibits considerable changes in cell characteristics such as shorter cells, thinner cell walls, narrower cell diameter, and a higher microfibril angle. Therefore, juvenile wood possesses poorer physical [20,21] and mechanical properties than mature wood [22][23][24][25], as well as reduced natural durability [26] and diminished drying quality [27,28]. Therefore, more juvenile wood can significantly impact the overall wood quality [29].…”

Section: Introductionmentioning

confidence: 99%

Radial Variation of Wood Anatomical Characteristics and Maturation Ages of Six Korean Oak Species

Savero,

Kim,

Purusatama

et al. 2024

Forests

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The objective of this study was to examine and compare radial variation of the anatomical characteristics and the transition age from juvenile to mature wood of the six Korean oak wood species: Quercus variabilis (Qv), Quercus serrata (Qs), Quercus mongolica (Qm), Quercus dentata (Qd), Quercus aliena (Qal), and Quercus acutissima (Qac). Quantitative anatomical features were observed from the pith to the bark at five growth-ring intervals using optical microscopy. A segmented regression model was used to evaluate the transition from juvenile wood to mature wood. The clearest transition from juvenile to mature wood was observed in the radial variation of the earlywood vessel diameter and fiber length. The maturation age of the six Korean oak species ranged from 19 to 44 years. Qv exhibited the highest values for latewood vessel diameter, fiber length, and fiber diameter. Qac displayed the highest values for earlywood vessel diameter and fiber wall thickness. The highest fiber lumen diameter was observed for Qm. The differences in earlywood and latewood vessel diameters and fiber lengths could be utilized as identification keys for these species. Earlywood vessel diameter and fiber length have emerged as the most reliable indicators for estimating the transition from juvenile to mature wood.

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Effect of steam-drying treatment on moisture content, drying rate, color, and drying defects in juvenile wood ofTectona grandisfrom fast-growth plantations

Cited by 11 publications

References 24 publications

Investigating the drying characteristics of Anthocephalus chinensis (Lam.) A. Rich ex Walp wood

Investigating the drying characteristics of Anthocephalus chinensis (Lam.) A. Rich ex Walp wood

CLT Fabricated with Gmelina arborea and Tectona grandis Wood from Fast-Growth Forest Plantations: Physical and Mechanical Properties

Radial Variation of Wood Anatomical Characteristics and Maturation Ages of Six Korean Oak Species

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