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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
- Source :
- Energy and Buildings, Energy and Buildings, Elsevier, 2017, 153, pp.501-512. ⟨10.1016/j.enbuild.2017.08.022⟩
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- International audience; 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.
- Subjects :
- Thermal properties
Materials science
Starch
020209 energy
0211 other engineering and technologies
Mechanical properties
02 engineering and technology
Optimal composition
[SPI.MAT]Engineering Sciences [physics]/Materials
[SPI]Engineering Sciences [physics]
chemistry.chemical_compound
Wheat starch
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
021105 building & construction
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Composite material
Porosity
Civil and Structural Engineering
[PHYS]Physics [physics]
[SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable
Mechanical Engineering
Hemp starch agro-material, Porosity, Mechanical properties, Thermal properties, Hygric properties
[SPI.NRJ]Engineering Sciences [physics]/Electric power
Hemp starch agro-material
Building and Construction
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
Characterization (materials science)
Hygric properties
chemistry
[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
[SPI.GCIV.EC]Engineering Sciences [physics]/Civil Engineering/Eco-conception
Subjects
Details
- ISSN :
- 03787788
- Volume :
- 153
- Database :
- OpenAIRE
- Journal :
- Energy and Buildings
- Accession number :
- edsair.doi.dedup.....720cbdc81a98a5d94ce361285ef5dfab