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Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Oct 2017 France Publisher:Elsevier BVJournal:Energy and Buildings, volume 153, pages 501-512 (issn: 0378-7788, Copyright policy )
Authors: Bourdot, Alexandra; Moussa, Tala; Gacoin, Alexandre; Maalouf, Chadi; Vazquez, Patricia; Thomachot-Schneider, Céline; Bliard, Christophe; +5 Authors

doi: 10.1016/j.enbuild.2017.08.022

Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties

Abstract

Hemp shives is a lightweight material known for its insulating properties. Associating these bio-fibers with plant-based matrix instead of a mineral binder in insulation applications is of ecological interest. This article describes the study of a low environmental impact 100% plant-based material made solely from wheat starch and hemp shives. The hemp/starch ratio (H/S) influence and hemp shive size are studied. Samples are evaluated in terms of physical properties, mechanical behaviour and hygrothermal properties through an experimental approach. Results show that increasing 0–5 mm hemp shive proportion from 15% to 30% leads to a significant enhancement of the mechanical and hygric characteristics due to the load transfer and porosity. However, when the H/S ratio increases, mechanical and hygrothermal characteristics decrease slightly. Finally, the hemp-starch agro-material with H/S equal to 8 and 30% of 0–5 mm hemp shive seems to be the optimal composition between the studied samples.

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Keywords

Thermal properties, [ SPI.GCIV.EC ] Engineering Sciences [physics]/Civil Engineering/Eco-conception, [ SPI.GCIV.MAT ] Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [ SPI.MAT ] Engineering Sciences [physics]/Materials, Mechanical properties, [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI]Engineering Sciences [physics], [ SPI.GCIV.CD ] Engineering Sciences [physics]/Civil Engineering/Construction durable, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], [PHYS]Physics [physics], [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Hemp starch agro-material, Porosity, Mechanical properties, Thermal properties, Hygric properties, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Hemp starch agro-material, [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], 620, Hygric properties, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, Porosity, [SPI.GCIV.EC]Engineering Sciences [physics]/Civil Engineering/Eco-conception

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    citations
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    		 87
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
87
Top 1%
Top 10%
Top 1%
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