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Hemp-Straw Composites: Gluing Study and Multi-Physical Characterizations.

Marie Viel1,2, Florence Collet3, Sylvie Prétot4

  • 1Laboratoire Génie Civil et Génie Mécanique, Université de Rennes, BP 90422 Rennes, France. marie.viel@univ-nantes.fr.

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Summary
This summary is machine-generated.

This study explores fully bio-based composites using hemp and wheat for sustainable building materials. These eco-friendly materials offer good mechanical and thermal insulation properties.

Keywords:
green bindershemp shivmechanical propertiesporositysustainable building materialsthermal propertieswheat straw

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Area of Science:

  • Materials Science
  • Sustainable Engineering
  • Biocomposites

Background:

  • Growing demand for sustainable development necessitates eco-friendly building materials.
  • Bio-based composites offer a viable alternative, utilizing renewable agro-resources.
  • Previous research established the feasibility of wheat straw as a binder.

Purpose of the Study:

  • To develop and evaluate fully bio-based composites using hemp as aggregate and wheat as binder.
  • To compare hemp-straw composites with hemp-polysaccharides composites.
  • To assess the gluing effect, mechanical properties, and thermal performance.

Main Methods:

  • Chemical analysis and Scanning Electron Microscopy (SEM) to study the gluing effect.
  • Multi-physical characterization of the developed composites.
  • Evaluation of mechanical properties for insulating applications.
  • Measurement of thermal conductivity.

Main Results:

  • The developed hemp-straw composites demonstrated a viable gluing effect.
  • Composites exhibited sufficient mechanical strength for use as insulating materials.
  • Excellent thermal performance was observed, with low thermal conductivity (67.9-69.0 mW/(m·K)).

Conclusions:

  • Fully bio-based composites from hemp and wheat show promise as sustainable building materials.
  • These materials meet the requirements for effective thermal insulation.
  • Further development can advance the use of agro-resources in construction.