|  | Arnaud, Laurent
Bio-aggregate-based Building Materials
Applications to Hemp Concretes
ISTE
 1. Auflage Januar 2013
139,- Euro
2013. 336 Seiten, Hardcover
ISBN 978-1-84821-404-0 - John Wiley & Sons
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| Kurzbeschreibung
To ensure its structural integrity, concrete is typically reinforced with different types of fibrous materials. Focusing on particles and fibers produced from the hemp plant, this book presents an overview of the current knowledge on construction materials made from plant particles and the different factors influencing the character of fiber-reinforced concrete. The book clearly explains building materials containing raw materials, with special emphasis on renewable, recyclable, and easily available plant particles. An invaluable guide for engineers and materials scientists working on construction materials.
Aus dem Inhalt
Foreword
Chapter 1 Environmental, Economic and Social Context of Agro-Concretes
Vincent NOZAHIC and Sofiane AMZIANE
Sustainable development, construction and materials
Environmental impacts of the construction sector
Standardization and regulation: toward a global approach
Standardization and regulation in force
Limitations of the normative and regulatory framework
The materials: an increasingly crucial element
Role of the materials in energy consumption
What is a low-environmental-impact material?
Constantly-changing regulations
The specific case of concretes made from lignocellular particles
Development of agro-concretes in the context of France
What does the term "Agro-concrete" mean?
General definition
Lignocellular resources
General characteristics of lignocellular agro-resources
Conclusions
Bibliography
Chapter 2 Characterization of Plant-Based Aggregates
Vincent PICANDET
Microstructure of the shiv particles
Structure of the stem of fibrous plants
SEM observation of hemp shiv particles
Chemistry of the cell walls
Density and porosity, in the case of hemp shiv
Particle Size Distribution (PSD)
General characteristics of aggregates made from fibrous plants
Fiber content
Methods for characterizing the PSD
PSD analyses
Comparison of the results obtained by image analysis
Characterization of the geometry of the particles
Characterization of the PSD
Conclusions
Compactness and compressibility
Water absorption capacity
Bibliography
Chapter 3 Binders
Gilles ESCADEILLAS, Camille MAGNIONT, Sofiane AMZIANE and Vincent NOZAHIC
Portland cements
Chemical and mineral composition
Environmental impacts
Lime
Aerial lime
Natural hydraulic limes
Lime-pozzolan mixtures
Natural pozzolans
Calcined natural pozzolans: metakaolin
Fly ash
Blast furnace slag
Plaster
Chemical and mineralogical composition
Environmental impacts
Summary
Bibliography
Chapter 4 Formulation and Implementation
Christophe LANOS, Florence COLLET, Gérard LENAIN and Yves HUSTACHE
Objectives
Preamble
Traditional applications
Constituents and mixture
Methods of implementation
Rules of formulation
Basis of usual formulations
Influence of the proportion of paste in the mixture
Quality of the paste and water content
Homogeneity of the paste
The relationship between formulation and strength
The relationship between formulation and thermo-hydric properties
Examples of formulations
Origin of the data
Walling application
Flooring application
Roofing application
Other applications
Installation techniques
Building a wall using formwork
Application by spraying
Laying of a floor
Creating a roof
Other uses
Professional rules for buildings using hempcrete and hemp mortars
History
Principles and content of the professional regulations
Bibliography
Chapter 5 Mechanical Behavior
Laurent ARNAUD, Sofiane AMZIANE, Vincent NOZAHIC and Etienne GOURLAY
Composite material
Making of the test tubes
Mechanical behavior
Effect of initial compression
Effect of the nature of the binder
Influence of the binder content
Influence of the particle size
Influence of the curing conditions
Evolution over time
Interaction between particles and binder
Anisotropic behavior
Modeling of the mechanical behavior
Empirical approach
Self-consistent homogenization approach
Toward the study of a stratified composite
Conclusion
Bibliography
Chapter 6 Hygrothermal Behavior of Hempcrete
Laurent ARNAUD, Driss SAMRI and Étienne GOURLAY
Introduction
Heat conductivity
Measurement of the conductivity
Modeling of the heat conductivity in dry and humid conditions
Heat transfers
Hygrothermal transfers
Experimental device
Stresses
Phase changes
Hygrothermal transfers
Role of coating products applied to hempcrete
Thermal characterization of various construction materials
Autoclaved aerated concrete
Vertically perforated brick
Hempcrete
Modeling of coupled heat- and mass transfers
Transfer laws
Transfer model: the Künzel model
Determination of the transfer coefficients
Numerical modeling
Chapter 7 Acoustical Properties of Hemp Concretes
Philippe GLÉ, Emmanuel GOURDON and Laurent ARNAUD
Introduction
Acoustical properties of the material on the basis of the main mechanisms
Influence of the components
Influence of the casting method
Modeling the acoustical properties
Physical analysis of the acoustical properties being measured
The adapted double porosity model and its parameters
Experimental validation of the model
Application of the model to the acoustical characterization of shiv
Porosity of shiv
Resistivity
Conclusion
Bibliography
Chapter 8 Plant-Based Concretes in Structures: Structural
Aspect - Addition of a Wooden Support to Absorb the Strain
Philippe MUNOZ and Didier PIPET
Introduction
Preliminary test
Description of the panel
Putting the panel in place on the bracing bank
Longitudinal loading and measurement of the movements
Behavior of the test bank
Behavior of the wooden panel
Test on a composite panel of a wooden skeleton and hempcrete
Description of the panel
Emplacement of the panel on the bracing bank
Vertical loading
Longitudinal loading and measurement of the movements
Running of the test
Feature of the ruin of the panel
Results and comparative analysis
Conclusions and reflections
Acknowledgements
Bibliography
Chapter 9 Examination of the Environmental Characteristics of a Banked Hempcrete Wall on a Wooden Skeleton, by Lifecycle
Analysis: Feedback on the LCA Experiment from
Marie-Pierre BOUTIN and Cyril FLAMIN
Introduction
Description of the products studied
Method for environmental evaluation of bio-sourced materials
Lifecycle Analysis on hempcrete - methodology, working hypotheses and results
Delimitation of the system under study
Inventory analysis
Impact evaluation
Results and interpretation of the lifecycle
Interpretations of the lifecycle, conclusions and reflections
Bibliography
List of Authors
Index
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