Change of mechanical properties of norway spruce wood doe to degradation caused by fire retardants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F10%3A00023639" target="_blank" >RIV/60461373:22310/10:00023639 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Change of mechanical properties of norway spruce wood doe to degradation caused by fire retardants

Original language description

The degradation of surface layers of wood can be caused by chemical reactions of compounds contained in fire retardants which were applied to historic wooden structures in the past. Among such chemicals are e.g. ammonium sulphate and ammonium phosphate.The paper presents the experimentally established mechanical properties measured on the surface of fibrillated wood of Norway Spruce (Picea abies (L.) Karst.), and their comparison with values measured on undamaged wood. The results proved a loss of cohesion in the damaged surface layer accompanied with a decrease in tensile strength by up to 50% when compared to the values ascertained in undamaged wood. The impact of corrosion was also studied using hardness tests based on ball and pin indentation. Electron microscopy investigation revealed both the damage to the middle lamella, which mainly consists of lignin, and the damage to the secondary cell wall primarily formed by cellulose. The increasing degree of fibrillation is accompanied

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

AL - Art, architecture, cultural heritage

OECD FORD branch

—

Project

<a href="/en/project/GA103%2F07%2F1091" target="_blank" >GA103/07/1091: Effect of antifire coatings on the corrosion of historical timber</a><br>

Continuities

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

Publication year

2010

Confidentiality

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

Name of the periodical

Wood research

ISSN

1336-4561

e-ISSN

—

Volume of the periodical

55

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

16

Pages from-to

—

UT code for WoS article

—

EID of the result in the Scopus database

—