Reference : Moisture equilibrium in straw bale walls
Scientific congresses and symposiums : Unpublished conference/Abstract
Engineering, computing & technology : Materials science & engineering
Moisture equilibrium in straw bale walls
Evrard, Arnaud [Université Catholique de Louvain - UCL > Architecture et Climat > > >]
Louis, Arnaud mailto [Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil > >]
Biot, Benjamin [Institut de Conseil et d'Etudes en Développement Durable > > > >]
Dubois, Samuel mailto [Université de Liège - ULiège > Sciences et technologie de l'environnement > Mécanique et construction >]
PLEA2012 - Opportunities, Limits & Needs - Towards an environmentally responsible architecture
du 07 novembre 2012 au 09 novembre 2012
[en] Straw bale ; earth plaster ; lime coating ; water repellent ; moisture regulation ; thermal inertia
[en] Straw bales technology for buildings is developing in Belgium as in many other countries. The market is growing but significant uncertainties are left concerning how to model its dynamical hygrothermal performances and its long term behaviour. The present paper presents the preliminary analysis conducted on material parameters and component’s response to dynamic heat and moisture solicitations. The simulations use WUFI Pro software based on material parameters form literature and both reference climate files for Belgium and theoretical climates to analyse the interactions between straw bale walls and finishing materials and their influence on component performances and durability. A specific prefabricated wall element sold on Belgian market is detailed and introduced in simulations. The influence on comfort feelings and indoor air quality are discussed with a focus on component´s thermal inertia and moisture regulation capacity. The paper concludes with recommendations on wall composition to help straw bale technologies to develop in building market of Belgium and other countries.
Région wallonne : DG04 et DG06

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