The changes occurring in oak Quercus robur L. wood as a result of long-term immersion in freshwater of hydrotechnical objects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41310%2F24%3A100946" target="_blank" >RIV/60460709:41310/24:100946 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.26202/sylwan.2023111" target="_blank" >https://doi.org/10.26202/sylwan.2023111</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.26202/sylwan.2023111" target="_blank" >10.26202/sylwan.2023111</a>
Alternative languages
Result language
angličtina
Original language name
The changes occurring in oak Quercus robur L. wood as a result of long-term immersion in freshwater of hydrotechnical objects
Original language description
Oak Quercus robur wood is characterized by high durability and resistance to variable weather conditions. It is a heavy, hard material (II hardness class according to Brinell) that is easily split and elastic. As a material, oak wood is easy to process mechanically. Due to these characteristics, oak wood is a valuable resource widely used in construction, including water-related objects. The research material used in this study was oak wood obtained from the sluice gate of the dam in Czaniec. The dam was built in 1958, and the oak elements of the sluice gate were also constructed that year. The studied material was exposed to extremely variable environmental conditions until 2020, being periodically submerged in water and also outside the aquatic environment. In this study, the strength of oak wood was analyzed through bending and compression tests using a Shimadzu AG-XV strength testing machine. Additionally, the chemical properties were examined through elemental analysis using an LECO CHN628 + S analyzer and thermogravi- metric analysis on a Mettler Toledo TGA/DSC3 apparatus. The average density of the tested material in an absolutely dry state was 639 kg/m 3 , with a calorific value of 18.39 MJ/kg. The cellu- lose content was 43%, hemicellulose 21%, lignin 29%, water 6%, and resin and ash 1%. The tested wood exhibited a bending strength of 76.00 MPa and a compression strength of 60.77 MPa along the fibers. The wood meets the required standards for structural wood according to ISO PN-EN 338:2016-06, with a class of D50. Despite the challenging conditions and the long period of storage, the tested oak wood still retains properties similar to recently obtained oak wood.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Sylwan
ISSN
0039-7660
e-ISSN
0039-7660
Volume of the periodical
168
Issue of the periodical within the volume
2024
Country of publishing house
PL - POLAND
Number of pages
11
Pages from-to
296-306
UT code for WoS article
001246419400001
EID of the result in the Scopus database
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