Dans l'optique de répondre à la demande du marché des matériaux biosourcés en France pour le secteur du bâtiment, les travaux présentés dans cette thèse avaient pour objectif de formuler un nouveau matériau biosourcé en exploitant des nouvelles ressources végétales, telle que la plante de Diss. Ce matériau sera destiné pour la production des panneaux de bardage pour la réhabilitation énergétique des bâtiments. Dans un premier lieu, une étude sur l'extraction, le traitement et la caractérisation des fibres de Diss a été menée. Elle a été suivie dans un deuxième temps par une application de ces fibres comme renfort à une matrice thermoplastique, le polypropylène. La caractérisation mécanique et hydrothermique, l'étude de durabilité et l'évaluation environnementale de la phase de production de ces biocomposites ont été abordées. Les résultats montrés sont prometteurs, notamment pour une telle application où les fibres de Diss ont présenté des propriétés mécaniques et hydro/hygrothermiques intéressantes. De plus, l'incorporation de ces fibres a amené à une amélioration des propriétés mécaniques de la matrice. D'autre part, l'étude de durabilité a mis en évidence l'effet du vieillissement hydrothermique sur leurs propriétés mécaniques. Il a été conclu également que l'utilisation des fibres de Diss avait un effet nettement positif sur la réduction des impacts relatifs au réchauffement climatique, grâce à la séquestration biogénique du CO2. Ces résultats aident à mieux anticiper une future industrialisation de ces fibres et mettre en amont leur effet bénéfique sur l'environnement.

Comprehensive guidance on using hemp lime for housing and low-rise buildings is given for the first time in this book, which is full of practical information on materials, design and construction.

Natural fibres are becoming increasingly popular for use in industrial applications, providing sustainable solutions to support technical innovation. These versatile, natural based materials have applications in a wide range of industries, from textiles and consumer products to the automotive and construction industries. Industrial Applications of Natural Fibres examines the different steps of processing, from natural generation, fibre separation and fibre processing, to the manufacturing of the final product. Each step is linked to fibre properties and characterization, highlighting how different fibres influence the product properties through a discussion of their chemical and structural qualities. Considering the value-added chain from natural generation to final product, with emphasis on quality management, this book reviews the current research and technical applications of natural fibres. Topics covered include: Introduction to the Chemistry and Biology of Natural Fibres Economic Aspects of Natural Fibres Vegetable Fibres Animal Fibres Testing and Quality Management Applications: Current and Potential Industrial Application of Natural Fibres will be a valuable resource for scientists in industry and academia interested in the development of natural based materials and products. It is particularly relevant for those working in chemical engineering, sustainable chemistry, agricultural sciences, biology and materials sciences.

This book assesses the potential effects of biotechnological approaches, particularly genetic modification, on the present state of fiber crop cultivation and sustainable production. Leading international researchers discuss and explain how biotechnology can affect and solve problems in connection with fiber crops. The topics covered include biology, biotechnology, genomics and applications of fiber crops like cotton, flax, jute and bamboo. Providing complete, comprehensive and broad subject-based reviews, the book offers a valuable resource for students, teachers, and researchers including agriculturists, biotechnologists and botanists, as well as industrialists and government agencies involved in the planning of fiber crop cultivation.

First published in 1962, and now in its fourth edition, Physical properties of textile fibres has become a classic, providing the standard reference on key aspects of fibre performance. The new edition has been substantially reorganised and revised to reflect new research.After introductory chapters on fibre structure, testing and sampling, the book reviews key fibre properties, their technical significance, factors affecting these properties and measurement issues. Each chapter covers both natural and synthetic fibres, including high-performance fibres. The book first reviews properties such as fineness, length and density. It then considers thermal properties and reaction to moisture. A further group of chapters then reviews tensile properties, thermo-mechanical responses, fibre breakage and fatigue. Finally, the book discusses dielectric properties, electrical resistance and static, optical properties and fibre friction.Written by one of the world's leading authorities, the fourth edition of Physical properties of textile fibres consolidates its reputation as a standard work both for those working in the textile industry and those teaching and studying textile science. - A standard reference on key aspects of fibre performance - An essential read and reference for textile technologists, fibre scientists, textile engineers and those in academia - Provides substantial updated material on fibre structure and new test methods, data and theories regarding properties of textile fibres

Using plant material as raw materials for construction is a relatively recent and original topic of research. This book presents an overview of the current knowledge on the material properties and environmental impact of construction materials made from plant particles, which are renewable, recyclable and easily available. It focuses on particles and as well on fibers issued from hemp plant, as well as discussing hemp concretes. The book begins by setting the environmental, economic and social context of agro-concretes, before discussing the nature of plant-based aggregates and binders. The formulation, implementation and mechanical behavior of such building materials are the subject of the following chapters. The focus is then put upon the hygrothermal behavior and acoustical properties of hempcrete, followed by the use of plant-based concretes in structures. The book concludes with the study of life-cycle analysis (LCA) of the environmental characteristics of a banked hempcrete wall on a wooden skeleton. Contents 1. Environmental, Economic and Social Context of Agro-Concretes, Vincent Nozahic and Sofiane Amziane. 2. Characterization of Plant-Based Aggregates. Vincent Picandet. 3. Binders, Gilles Escadeillas, Camille Magniont, Sofiane Amziane and Vincent Nozahic. 4. Formulation and Implementation, Christophe Lanos, Florence Collet, Gérard Lenain and Yves Hustache. 5. Mechanical Behavior, Laurent Arnaud, Sofiane Amziane, Vincent Nozahic and Etienne Gourlay. 6. Hygrothermal Behavior of Hempcrete, Laurent Arnaud, Driss Samri and Étienne Gourlay. 7. Acoustical Properties of Hemp Concretes, Philippe Glé, Emmanuel Gourdon and Laurent Arnaud. 8. Plant-Based Concretes in Structures: Structural Aspect – Addition of a Wooden Support to Absorb the Strain, Philippe Munoz and Didier Pipet. 9. Examination of the Environmental Characteristics of a Banked Hempcrete Wall on a Wooden Skeleton, by Lifecycle Analysis: Feedback on the LCA Experiment from 2005, Marie-Pierre Boutin and Cyril Flamin. About the Authors Sofiane Amziane is Professor and head of the Civil Engineering department at POLYTECH Clermont-Ferrand in France. He is also in charge of the research program dealing with bio-based building materials at Blaise Pascal University (Institut Pascal, Clermont Ferrand, France). He is the secretary of the RILEM Technical Committee 236-BBM dealing with bio-based building materials and the author or co-author of over one hundred papers in scientific journals such as Cement and Concrete Research, Composite Structures or Construction Building Materials as well as international conferences. Laurent Arnaud is a Bridges, Waters and Forestry Engineer (Ingénieur des Ponts, Eaux et Forêts) and researcher at Joseph Fourier University in Grenoble, France. He is also Professor at ENTPE (Ecole Nationale des Travaux Publics de l’Etat). Trained in the field of mechanical engineering, his research has been directed toward the characterization and development of new materials for civil engineering and construction. He is head of the international committee at RILEM – BBM, as well as the author of more than one hundred publications, and holder of an international invention patent.