Hygric Behavior of Viticulture By-Product Composites for Building Insulation

Céline Badouard (1, 2) , Chadi Maalouf (1, 3) , Christophe Bliard (2) , Guillaume Polidori (1) , Fabien Bogard (1)

1 MATIM - Matériaux et Ingénierie Mécanique
2 ICMR - Institut de Chimie Moléculaire de Reims - UMR 7312
3 SFR Condorcet

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 coproducts, 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.

Mots clés: bio-based composite; agromaterials; hygric properties; renewable raw sources; hygrothermal performance

Domaines: Matériaux composites et construction; Construction durable

Céline Badouard, Chadi Maalouf, Christophe Bliard, Guillaume Polidori, Fabien Bogard. Hygric Behavior of Viticulture By-Product Composites for Building Insulation. Materials, 2022, Characterization of Biopolymer–Concrete Composites in Construction, 15 (3), pp.815. ⟨10.3390/ma15030815⟩. ⟨hal-03544691v2⟩