Hygrothermal performance study of an agrocomposite for buildings

Hygrothermal performance study of an agrocomposite for buildings

Tala MoussaChadi Maalouf Benitha Sandrine Umurigirwa Ton Huang Mai 

GRESPI, SFR Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne Moulin de la Housse, 51687 Reims Cedex, France

Corresponding Author Email: 
tala.moussa@univ-reims.fr
Page: 
277-294
|
DOI: 
https://doi.org/10.3166/RCMA.26.277-294
Received: 
N/A
| |
Accepted: 
N/A
| | Citation
Abstract: 

Following the environnement grenelle, reaching 10% of bio-resourced materials in building sector except wood is one of goals until 2020. Among these agro-materials, one can distinguish the hemp concrete. Based on hemp hurds and mineral binders including lime or polymer as starch, the hemp composites are appreciated for their hydrothermal and acoustic properties. In this study, a vegetal binder based on starch and extracted from wheat is used with treated and non-treated hemp hurds to form an ecological composite. The studied hempstarch is prepared with a ratio (H/S = 3,3). Hygrothermal properties such as moisture buffering value, sorption isotherm, water vapor permeability, thermal conductivity, and heat capacity are experimentally studied. The pore size distribution is performed using mercury porosimetry. Results reveal that the hemp-starch composite may be a promising solution in the insulation field due to its relatively low thermal conductivity and capacity to regulate the indoor relative humidity.

Keywords: 

hemp, starch, sorption, humidity, porosity

Extended abstract
1. Introduction
2. Matériaux et traitement de la chènevotte
3. Résultats et discussions
4. Conclusion et perspectives
  References

AFNOR (2001a). Hygrothermal performance of building materials and products. Determination of hygroscopic sorption properties, NF EN ISO standard 12572.

AFNOR NF EN ISO 12572 (2001b). Performance hygrothermique des matériaux et produits pour le bâtiment. Détermination des propriétés de sorption hygroscopique, NF EN ISO standard 12572.

AFNOR, Norme ISO 8301 (1991). Isolation thermique. Détermination de la résistance thermique et des propriétés connexes en régime stationnaire. Méthode flux métrique.

Alix S., Philippe E., Bessadok A., Lebrun L., Morvan C., Marais S. (2009). Effect of chemical treatments on water sorption and mechanical properties of flax fibres. Bioresource Technology, vol. 100, n° 20, p. 4742-4749.

Bajpai S.K., Chand N., Lodhi R. (2011). Moisture sorption isotherms and heat of sorption of sago starch film. Asian Journal of Food and Agro-Industry, vol 4, n° 4, p. 233-246.

Celino A., Freour S., Jacquemin S., Casari F &P. (2014). The hygroscopic behavior of plant fibers: a review. Frontiers in Chemistry, vol. 1, n°43, p. 1-12.

Cerezo V. (2005). Propriétés mécaniques, thermiques et acoustiques d’un matériau à base de particules végétales : approche expérimentale et modélisation théorique. Thèse de l’ENTPE.

Cerolini S., D’Orazio M., Di Pema C., Stazi A. (2009). Moisture buffering capacity of highly absorbing materials. Energy and Buildings, vol. 41, p. 164-168.

Collet F., Pretot S. (2012). Experimental investigation of moisture buffering capacity of sprayed hemp concrete. Construction and building materials, vol. 36, p. 58-65.

Collet F., Chamoin J., Pretot S., Lanos C. (2013). Comparison of the hygric behavior of three hemp concretes. Energy and buildings, vol. 62, p. 294-303.

Collet F., Pretot S. (2014). Thermal conductivity of hemp concretes Variation with formulation, density and water content. Construction and Building Materials, vol. 65, p. 612-619.

Collet F. (2004). Characterisation hydrique et thermique de matériaux à faibles impacts environnementaux. Thèse de l’INSA de Rennes.

Collet F., Bart M., Seeres L., Miriel J. (2008). Porous structure and water vapour sorption of hemp-based materials. Construction and buildings materials, vol. 22, p. 1271-1280.

Daian J.F. (1986). Processus de condensation et de transfert d’eau dans un matériau méso et macroporeux. Etude expérimentale du mortier de ciments s1. Thèse de doctorat, Université de Grenoble, USTMG/INPG, 329.

Evrard A., De Herde A. (2005), Bioclimatic envelopes made of lime and hemp concrete, In CISBAT 2005, p. 25-30, Lausanne, Suisse.

Gram H. E. (1988). Durability of natural fibres in concrete natural fibre reinforced cement and concrete, UK, Blackie and Son Ltd.

Guessasma S., Bassir D., Hedjazi L. (2015). Influence of interphase properties on the effective behaviour of a starch-hemp composite. Materials & Design, vol. 65, p.1053–1063.

Le A.T., Gacoin A., Li A., Mai T.H., El Wakil N. (2015). Influence of various starch/hemp mixtures on mechanical and acoustical behavior of starch-hemp composite materials. Composites Part B: Engineering, vol. 75, p. 201–211.

Leon y Leon C.A. (1998). New perspectives in mercury porosimetry. Advances in Colloid and Interface science, vol. 76-77, p. 341-342.

Merakeb S., Dubois F., Petit C. (2008). Modeling of the sorption hysteresis for wood. Wood Science Technology, vol. 43, p. 575-589.

Nguyen T. T., Picandet V., Amziane S., Baley C. (2009). Influence of compactness and hemp hurd characteristics on the mechanical properties of lime and hemp concrete. European Journal of Environmental and Civil Engineering, vol. 13, p.1039–1050.

Park G.S. (1986). Transport Principles—Solution, Diffusion and Permeation in Polymer Membranes. NATO ASI Series, vol. 181, p. 57-107.

Rode C. (2005). Moisture buffering of building materials. Report BYG DTU R-126, ISSN 1601–2917.

Roels S., Talukdar P., James C., Simonson C. J. (2010). Reliability of material data measurements for hygroscopic buffering. International Journal of Heat and Mass Transfer, vol. 53, n°23-24, p. 5355-5363.

Shea A., Lawrence M., Walker P. (2012). Hygrothermal performance of an experimental hemp-lime building. Construction and Building Materials, vol. 36, p. 270-275.

Simonson C.J., Salonvaara M., Ojanen T. (2004). Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: Part 1 – field measurements. Journal of Thermal Envelope and Building Science, vol. 28, n°1, p. 63–101.

Sing K.S. W. (1985). Reporting physisorption data for gas/solid systems with special reference to the determination of surface to the determination of surface area and porosity, Pure and Applied Chemistry, vol. 57, n° 4, p. 603-619.

United Nation Environment Program (2016). Environment for development. http://www.unep.org/sbci/AboutSBCI/Background.asp.

Umurigirwa B.S., Tigzer L., Dony P., Mai T.H., Maalouf C. (2013). Influence of chemical treatments on the properties of green composites based on hemp fibers and starch. 6th international wood fibre polymer composites symposium, p. 23-24, Biarritz, France.

Umurigirwa B.S. (2014). Elaboration et caractérisation d’un agromatériau chanvre-amidon pour le bâtiment. Thèse de l’Université de Reims Champagne Reims.

Umurigirwa B.S., Vroman I., Mai T.H., Maalouf C. (2015). Influence of chemical modification on hemp–starch concrete. Construction and Building Materials, vol. 81, p. 208–215.