PSI - Issue 26

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 26 (2020) 147–154

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of MedFract1 organizers Abstract Surface treatments can modify the materials behavior toward water sorption phenomena and the GAB equation is here proposed to study pine wood samples treated with difference sealing materials limiting in different ways the access and release of water moisture. Particularly, the modification of the k GAB , C GAB , V ads and S GAB parameters as a function of the applied coating is studied here in order to explore the usefulness of such variables as indicator of the presence of chemical treatments on wood at high RH values. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) c The 1 st Mediterranean Conference on Fracture and Structural Integrity, MedFract1 Application of the Guggenheim, Anderson, de Boer (GAB) equation to sealing treatments on pine wood Chiara Bertolin a* , Lavinia de Ferri a , Marcin Strojecki b a Norwegian University of Science and Technology, Department of Mechanical and Industrial Engineerin g, Gløshaugen, Trondheim, Norway b Polish Academy of Sciences, Jerzy Haber Institute of Catalysis and Surface Chemistry, Krakow, Poland The 1 s lin a* a b

Peer-review under responsibility of MedFract1 organizers Keywords: pine wood, GAB equation, vacuum microbalance

1. Introduction

Wood is a highly complex natural material whose properties are strongly affected by changes of the environmental parameters such as temperature (T) and relative humidity (RH). The risk of mechanical and biological decay on wood is particularly influenced by RH and consequently the assessment of the most suitable moisture conditions for wood based structures involves an accurate estimation of the wood response to moisture variation. Additionally, many times wood is not in its natural state but is subjected to treatments aimed to improve its performances and to increase its service life, especially for keeping wood dimensional stability, highly conditioned by changes in the moisture content.

* Chiara Bertolin. Tel. +47 48507716 E-mail address : chiara.bertolin@ntnu.no

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of MedFract1 organizers

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of MedFract1 organizers 10.1016/j.prostr.2020.06.018