Hygric Behavior of Viticulture By-Product Composites for Building Insulation
Céline Badouard1,2,3, Chadi Maalouf1,4, Christophe Bliard2
1MATériaux et Ingénierie Mécanique, MATIM, University of Reims Champagne Ardenne, CEDEX 2, 51687 Reims, France.
Abstract:
One possible approach to reducing the environmental impacts associated with the building sector is the development and use of bio-based building materials. The objective of this study is to determine the water properties of bio-based insulation materials, derived from winegrowing co-products, which promote energy efficiency. The water performance of these new bio-based materials is based on the measurement of the moisture buffer value, the sorption isotherm, and the water vapor permeability. Four by-products are analyzed: stalks, grape pomace, crushed stalks, and skins; they are combined with a potato starch binder. The performance of these composites is compared to two other bio-based composites (hemp/starch and beet pulp/starch). The stalk/starch composite can be classified as a hygroscopic and breathable material with excellent moisture retention capacity.
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