The purpose of this study was to assess the shear strength of the lap joints of beech wood. To achieve this objective, a one-component polyurethane adhesive filled with basalt fibers was used to create waterproof joints. The shear strength of the bonded joint was carried out according to EN 302-1. The results showed that the lap joints bonded with a one-component polyurethane adhesive containing 3% basalt fibers had significantly higher shear strength. While the average value of the shear strength of lap joints glued with one-component polyurethane without the filler in the hydrothermal stress was 8.8 N/mm2, the lap joints with basalt fibers achieved more than a 14% higher average shear strength of 10.1 N/mm2. In addition, the experimental data showed a higher occurrence of joint failure in the wood substrate when the modified adhesive was used, which contrasts with the behavior observed for reference joints bonded with an unmodified one-component polyurethane adhesive without basalt fibers.
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7 June 2024
INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: ICNAAM2022
19–25 September 2022
Heraklion, Greece
Research Article|
June 07 2024
Improving the tensile shear strength of lap joints of beech wood by adding basalt fibers to polyurethane adhesive
Petra Laciková;
Petra Laciková
a)
1
Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology
, Vevefí 331/95, 602 00 Brno, Czech Republic
a)Corresponding author: lacikova.p@fce.vutbr.cz
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Jan Vaněrek;
Jan Vaněrek
b
1
Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology
, Vevefí 331/95, 602 00 Brno, Czech Republic
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Adam Bět’ák;
Adam Bět’ák
c
1
Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology
, Vevefí 331/95, 602 00 Brno, Czech Republic
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Martin Böhm
Martin Böhm
d
2
Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague
, Thákurova 7, 166 29 Prague, Czech Republic
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a)Corresponding author: lacikova.p@fce.vutbr.cz
AIP Conf. Proc. 3094, 120006 (2024)
Citation
Petra Laciková, Jan Vaněrek, Adam Bět’ák, Martin Böhm; Improving the tensile shear strength of lap joints of beech wood by adding basalt fibers to polyurethane adhesive. AIP Conf. Proc. 7 June 2024; 3094 (1): 120006. https://doi.org/10.1063/5.0210477
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