Bonding performance of mixed species cross laminated timber from poplar (Populus nigra L.) and maple (Acer platanoides L.) glued with melamine and PUR adhesive

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F23%3A97018" target="_blank" >RIV/60460709:41320/23:97018 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jobe.2023.106159" target="_blank" >http://dx.doi.org/10.1016/j.jobe.2023.106159</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jobe.2023.106159" target="_blank" >10.1016/j.jobe.2023.106159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bonding performance of mixed species cross laminated timber from poplar (Populus nigra L.) and maple (Acer platanoides L.) glued with melamine and PUR adhesive

Popis výsledku v původním jazyce

The study assesses the suitability of lower grade fast-growing poplar lumber in manufacturing Cross Laminated Timber (CLT) panels and its compatibility as a core layer in mixed-species CLT panels. Three-layered CLT panels were prepared from poplar and mixed-species maple-poplar lumber using one-component polyurethane (1C-PUR) and melamine adhesive (ME). Reference samples were prepared from spruce for comparison. 1C-PUR adhesive performed very well in delamination test for both single and mixed-species CLT. ME adhesive showed good performance in single species CLT, however, in mixed species CLT, only half of the samples tested could meet the delamination test requirement. The shear strength of mixed species CLT (10.7-10.9 N/mm2) was significantly higher than that obtained with single species CLTs (4.8-5.4 N/mm2). Both 1C -PUR and ME bonded CLT samples of poplar as well as mixed species exhibited higher shear strength properties than spruce wood CLT. Melamine-bonded CLT panels exhibited relatively better shear strength than 1C-PUR bonded CLT. The failure of joints during shear test was pre-dominantly due to wood failure. The excellent bonding quality with 1C-PUR confirms the suit-ability of poplar wood for both single species as well as mixed species CLT.

Název v anglickém jazyce

Bonding performance of mixed species cross laminated timber from poplar (Populus nigra L.) and maple (Acer platanoides L.) glued with melamine and PUR adhesive

Popis výsledku anglicky

The study assesses the suitability of lower grade fast-growing poplar lumber in manufacturing Cross Laminated Timber (CLT) panels and its compatibility as a core layer in mixed-species CLT panels. Three-layered CLT panels were prepared from poplar and mixed-species maple-poplar lumber using one-component polyurethane (1C-PUR) and melamine adhesive (ME). Reference samples were prepared from spruce for comparison. 1C-PUR adhesive performed very well in delamination test for both single and mixed-species CLT. ME adhesive showed good performance in single species CLT, however, in mixed species CLT, only half of the samples tested could meet the delamination test requirement. The shear strength of mixed species CLT (10.7-10.9 N/mm2) was significantly higher than that obtained with single species CLTs (4.8-5.4 N/mm2). Both 1C -PUR and ME bonded CLT samples of poplar as well as mixed species exhibited higher shear strength properties than spruce wood CLT. Melamine-bonded CLT panels exhibited relatively better shear strength than 1C-PUR bonded CLT. The failure of joints during shear test was pre-dominantly due to wood failure. The excellent bonding quality with 1C-PUR confirms the suit-ability of poplar wood for both single species as well as mixed species CLT.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/EF16_019%2F0000803" target="_blank" >EF16_019/0000803: Excelentní Výzkum jako podpora Adaptace lesnictví a dřevařství na globální změnu a 4. průmyslovou revoluci</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF BUILDING ENGINEERING

ISSN

2352-7102

e-ISSN

2352-7102

Svazek periodika

68

Číslo periodika v rámci svazku

2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001012820600001

EID výsledku v databázi Scopus

2-s2.0-85148700290