MATEC Web Conf.
Volume 307, 2020International Conference on Materials & Energy (ICOME’17 and ICOME’18)
|Number of page(s)||6|
|Published online||10 February 2020|
Hygrothermal behaviour of flax shives used as insulation material in an attic of a traditional house
1 Univ. Artois, EA 4515, Laboratoire de Génie Civil et géo-Environnement, F-62400 Béthune, France
2 UC Lille, Yncréa HdF - HEI, Laboratoire de Génie Civil et géo-Environnement, 13 rue de Toul, F-59046 Lille, France
3 cd2e, Base du 11/19, F-62750 Loos en Gohelle, France
* Corresponding author: firstname.lastname@example.org
Western Europe area is one of the world regions where traditionally flax is grown. Whether in France or Belgium, flax is mainly used for the production of fabrics. When separating the different components of the plant, small woody elements called shives which represented about 50% of the production, are recovered. This work aims to study the behavior of flax shives used as insulation material in an attic of a French Flanders traditional house. Main scientific issues related to the study of heat and mass transfer is to determine the evolution of the thermal characteristics of the material and its durability. First, we propose a laboratory analysis of the hygrothermal behavior of shives by conventional thermal methods for characterizing thermal conductivity and volumetric heat (heat flux method), sorption curve is also determined. Then we focus on an experimental site which is an independent house where the old insulation of the attic in glass wool was replaced by flax shives. The hygrothermal behavior of this new insulation was monitored with humidity and temperature sensors for ten months. The thermal performances determined for a raw form of the shives in the laboratory are encouraging and hygrometric results show advantageous behavior whatever the season.
© The Authors, published by EDP Sciences, 2020
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