Effect of One-Sided Surface Charring of Beech Wood on Density Profile and Surface Wettability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F21%3APU140826" target="_blank" >RIV/00216305:26110/21:PU140826 - isvavai.cz</a>

Alternative codes found

RIV/68378297:_____/21:00542187 RIV/62156489:43410/21:43919865

Result on the web

<a href="https://www.mdpi.com/2076-3417/11/9/4086" target="_blank" >https://www.mdpi.com/2076-3417/11/9/4086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/app11094086" target="_blank" >10.3390/app11094086</a>

Result language

angličtina

Original language name

Effect of One-Sided Surface Charring of Beech Wood on Density Profile and Surface Wettability

Original language description

One-sided surface charred European beech wood (Fagus sylvatica L.) was studied. Radial and tangential specimens of dimensions of 50 x 25 x 350 mm were one-sided surface charred at 200, 250, 300, 350, and 400 degrees C for various times using a contact heating system. Specimens of dimensions of 50 x 25 x 50 mm(3) were prepared for treatment intensity analysis and its effect on surface wettability. Density profiles of the radial and tangential charred specimens were determined using X-ray densitography with a resolution of 0.05 mm. The wettability of the one-sided surface charred wood specimens was analyzed via contact angle, measured using the sessile drop method and determined over 10 to 150 s. The oven-dried specimens were partially submerged in water and water uptake was recorded after 2, 4, 6, 8, 10, 48, and 72 h according to EN-927-5. The surface density of the radial specimen groups charred at 200 degrees C for 6 min and 250 degrees C for 4 min decreased by about 4.5 to 8.2%. With increasingly severe charring, the surface density decreased by about 15.5 to 33.5%. A mild charring process produced a surface charred layer of approx. 2 mm, while higher temperatures and longer times affected the density up to 4-6 mm beneath the surface. Differences were found between the water uptake of the radial and tangential charred beech specimens. The most significant decrease of 56% in water uptake was recorded for the radial group prepared at 200 degrees C for 20 min after floating in water for 72 h. Water uptake in the radial groups modified at 250 degrees C for 4 and 6 min after 72 h decreased by 38% and 36%, respectively. The tangential groups did not show any statistically significant decrease. The average water uptake of the groups charred at 200 degrees C for 20 min, 350 degrees C for 2 min and 400 degrees C for 1 min was greater than that of the reference; the variability of the measured data was significantly greater due to the highly anisotropic character of the tan

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TJ02000072" target="_blank" >TJ02000072: Development of technology for surface carbonization of wooden building elements: elimination of moisture and biodegradation effects</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Sciences - Basel

ISSN

2076-3417

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

1-10

UT code for WoS article

000649897500001

EID of the result in the Scopus database

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