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Caracterisation Du Comportement Mecanique Des Betons De Granulats Legers
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Book Synopsis Caractérisation du comportement mécanique des bétons de granulats légers by : Yang Ke
Download or read book Caractérisation du comportement mécanique des bétons de granulats légers written by Yang Ke and published by . This book was released on 2008 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: An approach combining both experimental techniques and micromechanical modelling is developed in order to characterise elastic and fracture behaviours of lightweight aggregate concretes (LWAC). More than 300 LWAC specimens with various lightweight aggregates types (5) of several volume ratios and 3 different mortar matrices (normal, hp, vhp) were tested. With this experimental data basis, the influences of mix design parameters and of the interfacial transition zone (ITZ) on concretes performances are quantitatively analysed. The modelling is based on iterative homogenisation and localization techniques and includes the ITZ. Confrontations with experimental results allow identifying the elastic moduli and compressive strengths of LWA, which are difficult to obtain by experiments. whereas the traditional empirical formulas are insufficiently precise, the predictions of LWAC behaviours computed with the micromechanical models appear in good agreement with experimental measurements.
Book Synopsis Compatibilit ̌ľastique, comportement mčanique et optimisation des bťons de granulats lǧers by : Mľanie Shink
Download or read book Compatibilit ̌ľastique, comportement mčanique et optimisation des bťons de granulats lǧers written by Mľanie Shink and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SUR LES BETONS LEGERS ET LEUR COMPORTEMENT MECANIQUE SOUS DES SOLLICITATIONS BIAXIALES by : Dominique MORIN
Download or read book SUR LES BETONS LEGERS ET LEUR COMPORTEMENT MECANIQUE SOUS DES SOLLICITATIONS BIAXIALES written by Dominique MORIN and published by . This book was released on 1976 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: PROPRIETES MECANIQUES DES GRANULATS LEGERS DE PIERRE PONCE ET D'ARGILE EXPANSEE. COMPOSITION DES BETONS LEGERS. METHODE EXPERIMENTALE DES ESSAIS EN COMPRESSION ET TRACTION BIAXIALES. MESURE DES DEFORMATIONS. COMPORTEMENT MECANIQUE D'UN MODELE MATRICE-GRANULAT LEGER. ETATS LIMITES EXPERIMENTAUX EN COMPRESSION ET TRACTION BIAXIALE. LOIS DU COMPORTEMENT DU BETON LEGER.
Book Synopsis Contribution à l'étude des rôles respectifs joués par la pâte interstitielle et par les granulats dans le comportement mécanique du béton avant prise du liant by : Michel Barrioulet (auteur d'une thèse de sciences.)
Download or read book Contribution à l'étude des rôles respectifs joués par la pâte interstitielle et par les granulats dans le comportement mécanique du béton avant prise du liant written by Michel Barrioulet (auteur d'une thèse de sciences.) and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DU COMPORTEMENT MECANIQUE DU BETON FRAIS EN CONSIDERANT CE MATERIAU COMME UN MILIEU HETEROGENE. ETUDE DE L'ECOULEMENT DU BETON FRAIS DANS LE MANIABILIMETRE LCL SIMULANT LES CONDITIONS REELLES DE MISE EN PLACE DU BETON. DIFFERENTS MELANGES ETUDIES. RESULTATS DES EXPERIENCES AYANT PERMIS DE DEFINIR AVEC PRECISION LA PREMIERE PHASE (PATE INTERSTIELLE DU BETON) EN DETERMINANT SA COMPOSITION EXACTE (SURTOUT TENEUR EN EAU); D'ETUDIER LES PHENOMENES DE FROTTEMENTS INTERGRANULAIRES; DE METTRE EN EVIDENCE LES INFLUENCES RESPECTIVES DES DEUX PHASES DE L'ECOULEMENT. CORRELATION ENTRE LA QUANTITE D'EAU RETENUE PAR LES GRANULATS LEGERS ET L'APTITUDE A L'ECOULEMENT DES BETONS LEGERS FRAIS
Book Synopsis Propriétés mécaniques des bétons durcissants by : Pierre Laplante
Download or read book Propriétés mécaniques des bétons durcissants written by Pierre Laplante and published by . This book was released on 1993 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE CADRE DE CETTE THESE, NOUS NOUS SOMMES D'ABORD INTERESSES AU PROBLEME DES DIMINUTIONS DE RESISTANCE A LONG TERME OBSERVEES SUR LES BETONS MURIS AU JEUNE AGE A DES TEMPERATURES ELEVEES PAR RAPPORT AUX MEMES BETONS MURIS SELON LES MODES OPERATOIRES NORMALISES (20C ET 100% H.R.). PAR UN PROGRAMME EXPERIMENTAL, REALISE SUR PATE PURE ET SUR BETON, NOUS AVONS PU MESURER L'IMPORTANCE DE LA CURE THERMIQUE ET DE LA CURE HYGROMETRIQUE SUR LA RESISTANCE A 28 ET 91 JOURS DES BETONS ORDINAIRE ET A TRES HAUTES PERFORMANCES (THP). LES RESULTATS OBTENUS MONTRENT QUE LES BETONS THP CONTENANT DE LA FUMEE DE SILICE SUPPORTENT MIEUX LA TEMPERATURE QUE LES BETONS ORDINAIRES. NOUS NOUS SOMMES ENSUITE INTERESSES A LA CARACTERISATION DE CERTAINES PROPRIETES DU BETON AU JEUNE AGE. L'OBJECTIF DE CE TRAVAIL ETAIT DE FOURNIR AU MODULE MEXO, LOGICIEL DE PREVISION DES CONTRAINTES DANS LE BETON EN COURS DE DURCISSEMENT DEVELOPPE AU LCPC SUR LE CODE D'ELEMENTS FINIS CESAR, LES LOIS DE COMPORTEMENT DU BETON DURCISSANT. PLUS PRECISEMENT, NOTRE BUT ETAIT DE FOURNIR AU MODELISATEUR DES DONNEES EXPERIMENTALES PRECISES ET FIABLES CONCERNANT L'EVOLUTION DES PROPRIETES PHYSICO-MECANIQUES DU BETON DURCISSANT. NOUS AVONS DONC REALISE UN IMPORTANT PROGRAMME EXPERIMENTAL DANS LEQUEL NOUS AVONS ETUDIE POUR DEUX BETONS DIFFERENTS, UN BETON ORDINAIRE (B40) ET UN BETON THP (B80), L'EVOLUTION DE CERTAINES PROPRIETES DU BETON (RESISTANCE, MODULE ELASTIQUE, RETRAITS, FLUAGE, ETC.) EN FONCTION DE SA MATURITE (AGE EQUIVALENT A 20C). FINALEMENT, NOUS PROPOSONS UN MODELE DE COMPORTEMENT MECANIQUE UNIAXIAL DU BETON DURCISSANT QUE NOUS AVONS TESTE EN COMPARANT LES PREDICTIONS DU MODELE AUX MESURES EFFECTUEES SUR DES ESSAIS VRAIE GRANDEUR REALISES EN LABORATOIRE. IL S'AGIT DE POTEAUX 30120 CM
Book Synopsis Propriétés mécaniques et physico-chimiques des bétons autoplaçants exposés à une température élevée by : Hanaa Fares
Download or read book Propriétés mécaniques et physico-chimiques des bétons autoplaçants exposés à une température élevée written by Hanaa Fares and published by . This book was released on 2009 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'utilisation des Bétons autoplaçants (BAP) s'est considérablement développée au cours des dernières années et une attention grandissante est portée à l'étude de leurs propriétés mécaniques à l'état durci. Les spécificités de formulation de ces bétons (volume de pâte important, dosage élevé en additions minérales, rapport G/S (Gravillons/Sable) proche de 1, . . .) liées à leurs exigences de mise en oeuvre pourraient modifier leur comportement mécanique à l'état durci, comparativement aux bétons traditionnels vibres. Le comportement des BAP à haute température doit en particulier être évalué. Les matériaux testés sont 3 bétons de résistance courante dont 2 BAP et un BV. La particularité des BAP est le volume de pâte important. Des essais mécaniques (résistance à la compression, à la traction par flexion 4 points et mesure du module d'élasticité) ont été réalisés. Parallèlement à cela, la détermination de la porosité à l'eau, de la densité apparente, de la perte de masse ainsi que de la perméabilité aux gaz ont été étudiées. De plus, des observations microscopiques couplées à des analyses d'image et des analyses thermiques aident à préciser les causes physico-chimiques des phénomènes macroscopiques observes. Les résultats expérimentaux montrent des comportements significatifs entre les BAP et BV. Les essais de résistance à la compression ont permis de distinguer un gain de résistance entre 150 et 300°C. Ce gain est expliqué par une réhydratation de la matrice cimentaire due à la migration de l'eau à travers les pores pour les BAP, mais aussi à de meilleures propriétés liantes des hydrates formés. La réhydratation concerne les éléments anhydres de la pâte de ciment. Parallèlement à cette étude, un travail en collaboration avec l'Université d'Alabama concernant le comportement à haute température des bétons autoplaçants de granulats légers a été réalisé. Cette étude a permis de caractériser les propriétés mécaniques et les propriétés physico-chimiques de BAP de granulats légers (fabriques a Université d'Alabama (USA). Pour cela, des éprouvettes prismatiques et cylindriques ont subi deux traitements thermiques différents : un chauffage de type incendie ISO-834 et un chauffage lent à 1°C/min. A travers cette étude, les BAP GN ont présenté une meilleure stabilité thermique a un incendie ISO-834. En ce qui concerne les propriétés physico-chimiques, nous avons constaté une similitude des comportements entre BAP GL et BAP GN du point de vue de la porosité, densité, analyses thermiques. Néanmoins, une diminution de la porosité est observe à 400°C. Elle peut être attribuée à un retrait des éprouvettes causant une diminution de volume. D'un point de vue mécanique, les BAP GL présentent une meilleure résistance résiduelle à la compression et à la flexion que le BAP GN. Donc, l'utilisation de GL améliore le comportement mécanique résiduel.
Book Synopsis Granulats, sols, ciments et bétons by : Raymond Dupain
Download or read book Granulats, sols, ciments et bétons written by Raymond Dupain and published by . This book was released on 2004 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a toujours demandé que les matériaux du génie civil soient peu coûteux. Cependant, l'exigence de qualité, confortée par les moyens actuels de production et de contrôle, fait que l'on admet de moins en moins la médiocrité ou l'irrégularité de leurs performances. A cette exigence s'ajoute, pour les professionnels du génie civil, la nécessité de bien connaître les comportements et de mesurer les limites des matériaux qu'ils utilisent. Fondés sur le contact et l'observation, les essais de laboratoire sont le moyen privilégié de remplir cette double exigence. C'est pourquoi cet ouvrage, dans lequel les principaux essais sont décrits avec leur appareillage et leur mode opératoire, rendra un service inestimable aux élèves et étudiants en formation dans les classes de terminale STI spécialité Génie civil, les STS Bâtiment et Travaux publics, les IUT et les MST de Génie civil, les écoles d'ingénieurs. Il conviendra également aux professionnels qui souhaitent actualiser ou préciser leurs connaissances. Cette 3e édition, corrigée et mise à jour, tient compte de l'évolution des normes françaises et européennes.
Book Synopsis Cement Based Materials by : Hosam El-Din M. Saleh
Download or read book Cement Based Materials written by Hosam El-Din M. Saleh and published by BoD – Books on Demand. This book was released on 2018-10-10 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cement-based materials have been used by humans nearly since the dawn of civilization. The Egyptians used lime and gypsum cement to bind their aggregate materials, mud and straw, resulting in bricks that are used for building their famous Egyptian pyramids (between 3000 and 2500 BC). Hydrated cement is a cement material bonded together with water and used for building construction; it is characterized by acceptable chemical, physical, thermal, mechanical, and structural stability. It plays a main role in the creation of vessels for storage, roads to travel on, weather-resistant structure for protection, inert hard stabilizer for hazardous wastes, and so on. Due to the composition of these materials and their advantages, it has been practiced in different applications. Cement is an essential component of making concrete, the single most prevalent building material used worldwide for construction, skyscrapers, highways, tunnels, bridges, hydraulic dams, and railway ties. Besides their numerous desired properties, there are some undesirable features. To overcome these disadvantages, several studies were established to prepare, improve, and evaluate innovative cement-based materials. Despite its oldness and deep research, every year several methods and materials evolve and so do cement technology. This book intends to provide a comprehensive overview on recent advances in the evaluation of these materials.
Book Synopsis The Hempcrete Book by : William Stanwix
Download or read book The Hempcrete Book written by William Stanwix and published by Bloomsbury Publishing. This book was released on 2014-10-09 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive practical manual for professionals and self-builders, this innovative book explains the many benefits of building with hempcrete. Hempcrete is a building material with excellent, environmentally friendly properties. It's made from lime and hemp shivs (a waste product from hemp fibre growing) and can be used for walks, floor and roof insulation. Hempcrete is breathable, absorbing and emitting moisture; this helps regulate internal humidity, avoiding trapped moisture and mould growth, and creating healthier buildings. It provides excellent acoustic and thermal insulation, and it is lightweight, which reduces construction costs. Whether you're working on a new build or are planning a renovation, The Hempcrete Book tells you everything you need to know to get started with hempcrete. It describes how to source and mix it, and provides a detailed account of construction techniques, highlighting potential pitfalls and how to avoid them. With fully illustrated design notes and examples of completed builds, this book is a powerful tool for any eco-builder.
Book Synopsis Lime Hemp and Rice Husk-Based Concretes for Building Envelopes by : Morgan Chabannes
Download or read book Lime Hemp and Rice Husk-Based Concretes for Building Envelopes written by Morgan Chabannes and published by Springer. This book was released on 2017-10-04 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the tools to understand the issues related to bio-based concretes using lime as binder. Themes covered include specific properties of lignocellulosic aggregates (density, porosity, size distribution, water absorption, microstructure, soluble components under alkaline conditions), hardening of lime-based binders by carbonation and hydration (natural and curing processes) and microstructure of the binder in the vicinity of aggregates (dense or porous interphase). The mechanical (uniaxial and triaxial compression) and insulating properties of the relatively well-known hemp concretes and the novel rice husk concretes are also reviewed. Finally, a detailed and comprehensive description of the tools and methodologies that make it easier the design of such bio-based concretes is discussed. Written for students as well as researchers, this book is aimed at individuals working in both academic and industrial fields.
Book Synopsis Hemp Lime Construction by : Rachel Bevan
Download or read book Hemp Lime Construction written by Rachel Bevan and published by Building Research Establishment. This book was released on 2008 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Bio-aggregate-based Building Materials by : Sofiane Amziane
Download or read book Bio-aggregate-based Building Materials written by Sofiane Amziane and published by John Wiley & Sons. This book was released on 2013-02-05 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Dynamics and Control of Underactuated Multibody Spacecraft by : Sangbum Cho
Download or read book Dynamics and Control of Underactuated Multibody Spacecraft written by Sangbum Cho and published by . This book was released on 2002 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Filtering for Some Stochastic Processes with Discrete Observations by : Oleg V. Makhnin
Download or read book Filtering for Some Stochastic Processes with Discrete Observations written by Oleg V. Makhnin and published by . This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Propagating Instabilities in Nickel-titanium & Steel Alloys by : Mark Anthony Iadicola
Download or read book On Propagating Instabilities in Nickel-titanium & Steel Alloys written by Mark Anthony Iadicola and published by . This book was released on 2002 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidance Strategies for Microburst Escape by : Atilla Dogan
Download or read book Guidance Strategies for Microburst Escape written by Atilla Dogan and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Robert Alan Stowe Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612654341 Total Pages :420 pages Book Rating :4.6/5 (543 download)
Book Synopsis Performance Prediction of a Ducted Rocket Combustor [microform] by : Robert Alan Stowe
Download or read book Performance Prediction of a Ducted Rocket Combustor [microform] written by Robert Alan Stowe and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2001 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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