Mechanical properties of spruce wood extracted from glt beams loaded by fire

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00351533" target="_blank" >RIV/68407700:21110/21:00351533 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/su13105494" target="_blank" >https://doi.org/10.3390/su13105494</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/su13105494" target="_blank" >10.3390/su13105494</a>

Result language

angličtina

Original language name

Mechanical properties of spruce wood extracted from glt beams loaded by fire

Original language description

Heating wood to high temperature changes either temporarily or permanently its physical properties. This issue is addressed in the present contribution by examining the effect of high temperature on residual mechanical properties of spruce wood, grounding on the results of full-scale fire tests performed on GLT beams. Given these tests, a computational model was developed to provide through-thickness temperature profiles allowing for the estimation of a charring depth on the one hand and on the other hand assigning a particular temperature to each specimen used subsequently in small-scale tensile tests. The measured Young's moduli and tensile strengths were accompanied by the results from three-point bending test carried out on two groups of beams exposed to fire of a variable duration and differing in the width of the cross-section, b=100 mm (Group 1) and b=160 mm (Group 2). As expected, increasing the fire duration and reducing the initial beam cross-section reduces the residual bending strength. A negative impact of high temperature on residual strength has also been observed from simple tensile tests, although limited to a very narrow layer adjacent to the charring front not even exceeding a typically adopted value of the zero-strength layer d(0)=7 mm. On the contrary, the impact on stiffness is relatively mild supporting the thermal recovery property of wood.

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/GA18-05791S" target="_blank" >GA18-05791S: Fire resistance of glued laminated timber beams including uncertainties</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

SUSTAINABILITY

ISSN

2071-1050

e-ISSN

2071-1050

Volume of the periodical

13

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

19

Pages from-to

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UT code for WoS article

000662629100001

EID of the result in the Scopus database

2-s2.0-85106320508