Water vapor properties of two hemp wools manufactured with different treatments

Florence Collet (1) , Fouzia Achchaq (2) , Karim Djellab (3) , Laurent Marmoret (2) , Hassen Beji (2)

1 LGCGM - Laboratoire de Génie Civil et Génie Mécanique
2 LTI - Laboratoire des technologies innovantes - UR UPJV 3899
3 LRCS - Laboratoire réactivité et chimie des solides - UMR CNRS 7314

Hemp wools are environmentally friendly materials that are used for thermal insulation of building. These fibrous materials are the places of moisture transfer and storage that impact on thermal performances of the material. In this work, two kinds of hemp wool are studied: hemp wool with an organic binder (called HW1) and hemp-cotton wool with a polyester binder (called HW2). The investigations are based on water vapor sorption and on water vapor permeability measurements. The two kinds of hemp wool show similar sorption isotherm with quite high values of water content. The water vapor permeability is quite high too.

Mots clés: Adsorption isotherm; Water vapor permeability; Fibrous Insulating material

Domaines: Thermique [physics.class-ph]; Thermique [physics.class-ph]

Florence Collet, Fouzia Achchaq, Karim Djellab, Laurent Marmoret, Hassen Beji. Water vapor properties of two hemp wools manufactured with different treatments. Construction and Building Materials, 2011, 25, pp.1079-1085. ⟨10.1016/j.conbuildmat.2010.06.069⟩. ⟨hal-00709238⟩