Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Analyse Microstructurale Du Comportement Differe Du Beton
Download Analyse Microstructurale Du Comportement Differe Du Beton full books in PDF, epub, and Kindle. Read online Analyse Microstructurale Du Comportement Differe Du Beton ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis ANALYSE MICROSTRUCTURALE DU COMPORTEMENT DIFFERE DU BETON by : NADIA.. BELARIBI
Download or read book ANALYSE MICROSTRUCTURALE DU COMPORTEMENT DIFFERE DU BETON written by NADIA.. BELARIBI and published by . This book was released on 1997 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE COMPORTEMENT DIFFERE DU BETON DEPEND ESSENTIELLEMENT DE LA NATURE DES DEUX PHASES PATE-GRANULAT. LA PRESENCE OU L'ABSENCE D'ADDITIONS MINERALES AINSI QUE LA NATURE DES GRANULATS JOUENT UN ROLE PREPONDERANT DANS LA MODIFICATION DES PROPRIETES DU BETON. C'EST POURQUOI NOUS AVONS ETUDIE L'INFLUENCE DE CHACUNE DES DEUX PHASES SUR LES DEFORMATIONS DE FLUAGE ET DE RETRAIT DU BETON CAUSEES PAR DES VARIATIONS HYDRIQUES ET DES MODIFICATIONS DE LA MICROSTRUCTURE. CETTE ANALYSE COMPORTE, POUR L'ETUDE DU ROLE DE LA PATE, DES MESURES DE DEFORMATIONS DIFFEREES REALISEES SUR DES MORTIERS AVEC OU SANS ADDITIONS. CELUI DES GRANULATS, A ETE MIS EN EVIDENCE GRACE A L'EXAMEN DES REPARTITIONS HYDRIQUES SUR DES MODELES DIPHASIQUES PAR LA METHODE DE DENSIMETRIE PAR ABSORPTION DE RAYONS GAMMA NOMMEE GAMMAMETRIE. LES MESURES DE RETRAIT ET DE FLUAGE ONT ETE MENEES SUR DES MORTIERS CARACTERISES PAR UN RAPPORT EAU/(CIMENT+ADDITIONS) CONSTANT ET COMPOSES DE CIMENT AVEC ET SANS ADDITIONS. LA TECHNIQUE DE GAMMAMETRIE A ETE ADOPTEE POUR LE SUIVI DU SECHAGE DES EPROUVETTES DE MORTIERS AVEC ET SANS ADDITIONS ET DES MODELES DIPHASIQUES (PATE+GRANULAT) CHARGES OU TEMOINS. LA MODIFICATION DES PROPRIETES DE TRANSFERT AINSI QUE DE L'ETAT D'HYDRATATION APPORTEE PAR L'INCORPORATION DES ADDITIONS A ETE ETUDIEE SUR DES MORTIERS A EAU/(CIMENT+ADDITIONS) CONSTANT ET CEUX A MANIABILITE CONSTANTE. LES ECHANTILLONS ONT ETE CONSERVES DURANT LES ESSAIS DANS DEUX AMBIANCES: EN AUTODESSICCATION ET A 50% D'HUMIDITE RELATIVE. L'INCORPORATION DES ADDITIONS PAR SUBSTITUTION IMPLIQUE UNE DIMINUTION DE LA QUANTITE DE CIMENT DONC UNE MOINS FORTE HYDRATATION CONDUISANT A DES DEFORMATIONS DIFFEREES MOINS IMPORTANTES QUE CELLES D'UN MORTIER DE BASE. DANS LE MEME TEMPS, CETTE SUBSTITUTION OCCASIONNE DES PERTES DE RESISTANCES ET DES PERTES DE MASSE PLUS MARQUEES DUES A LA FORMATION D'UNE STRUCTURE PLUS POREUSE. LES VARIATIONS HYDRIQUES OU PLUS EXACTEMENT LES DIFFERENCES DE DENSITE DE LA PATE ENTOURANT UN GRANULAT CALCAIRE OU DE DIABASE SONT DUES A DES DIFFERENCES DE MICROSTRUCTURES DE LA PATE INDUITES PAR LES GRANULATS. IL EST IMPERATIF DE TENIR COMPTE DE L'INFLUENCE DE LA STRUCTURE POREUSE DES GRANULATS EN PLUS DE LEUR CARACTERISTIQUES MECANIQUES SUR LE COMPORTEMENT DE LA PATE DE CIMENT SE TROUVANT EN CONTACT
Book Synopsis Influence de la nature minéralogique des granulats sur le comportement mécanique différé des bétons by : Abdelkadir Makani
Download or read book Influence de la nature minéralogique des granulats sur le comportement mécanique différé des bétons written by Abdelkadir Makani and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'estimation des déformations différées, en particulier dans le cas des Béton à Hautes Performances (BHP) destinés aux ouvrages d'art, est primordiale pour prédire les flèches, les redistributions des contraintes dans les structures hyperstatiques et les pertes de précontrainte dans des éléments en béton précontraint. L'expérience montre néanmoins une dispersion certaine des valeurs de déformations instantanées et différées mesurées et des écarts non négligeables avec les valeurs calculées selon les règlements de dimensionnement.L'objectif de ce travail de thèse est de s'intéresser à un paramètre non pris en compte dans les règlements qui pourrait être à l'origine des imprécisions de leurs prédictions : le gravillon. Le programme expérimental s'articulera autour d'une étude comparative des comportements mécaniques instantanés et différés sans charge, retrait, et sous charge, fluage, de six BHP de même formulation de base (rapport E/L, volume de pâte), se différenciant principalement par le type de gravillon. A partir de cette base de données complétée par des analyses mécaniques et physico-chimiques sur les granulats, des paramètres influents liés au type de gravillon incorporé ont été détectés. Des comparaisons avec les estimations des modèles actuels tels que l'Eurocode 2 ont également été réalisées et ont montré des différences notables avec les valeurs expérimentales.Des analyses microstructurales ont été menées afin d'identifier l'état de la microstructure et du réseau poreux des matériaux, plus particulièrement à l'interface pâte-granulat (Interfacial Transition Zone ITZ). L'étude de l'ensemble des résultats a permis d'établir des corrélations entre le comportement mécanique et les analyses microstructurales. Une synthèse des données récoltées durant ce travail de recherche montre que le gravillon a une influence non négligeable sur les comportements mécaniques instantané et différé à travers différents paramètres de degré d'influence variable.
Book Synopsis ANALYSE ET MODELISATION DU COMPORTEMENT DIFFERE DES OUVRAGES CONSTITUES DE PLUSIEURS MATERIAUX by : BRUNO.. JURKIEWIEZ
Download or read book ANALYSE ET MODELISATION DU COMPORTEMENT DIFFERE DES OUVRAGES CONSTITUES DE PLUSIEURS MATERIAUX written by BRUNO.. JURKIEWIEZ and published by . This book was released on 1996 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LES CONDITIONS DE SERVICE, LE COMPORTEMENT DIFFERE (FLUAGE/RELAXATION, RETRAIT, VIEILLISSEMENT) DES MATERIAUX TEL LE BETON, LE BOIS, LES POLYMERES EST APPROCHE DE MANIERE SATISFAISANTE PAR LA THEORIE DE LA VISCOELASTICITE LINEAIRE. L'APPROCHE INCREMENTALE DE CETTE THEORIE RAMENE ALORS LA RESOLUTION DU PROBLEME DE STRUCTURE A LA RESOLUTION D'UNE SUCCESSION DE PROBLEMES THERMOELASTIQUES FICTIFS EQUIVALENTS. CETTE APPROCHE PERMET EN OUTRE D'ELUDER LE STOCKAGE DE LA TOTALITE DE L'HISTOIRE DES SOLLICITATIONS, MAIS NECESSITE LA MISE AU POINT D'UNE PROCEDURE SPECIFIQUE POUR L'IDENTIFICATION DES PARAMETRES RHEOLOGIQUES. CETTE LOI DE COMPORTEMENT INCREMENTALE EST ENSUITE INTRODUITE DANS L'ANALYSE DES STRUCTURES EN VARIABLES GENERALISEES DE POUTRE, DE PLAQUE ET DE COQUE. IL EST TENU COMPTE A PRIORI DE DEFORMATIONS LIBRES D'ORIGINE QUELCONQUE (RETRAIT, DILATATIONS THERMIQUES). LA LOI DE COMPORTEMENT GENERALISEE EST ALORS ETABLIE. CETTE RELATION EST IMPLANTEE DANS UN CODE DE CALCUL PAR ELEMENTS FINIS EXISTANT. UN SYSTEME DE FORCES NODALES FICTIFS, ACTUALISEES A CHAQUE PAS DE TEMPS, REPRESENTENT LES EFFETS DIFFERES. L'ALGORITHME ETABLI EST COMPLETE POUR TENIR COMPTE DU PROCESSUS DE CONSTRUCTION. L'OUTIL DE MODELISATION AINSI MIS AU POINT EST VALIDE, PUIS APPLIQUE A LA CONCEPTION D'UNE PASSERELLE HAUBANEE A TABLIER COMPOSITE BOIS-BETON ET AU DIAGNOSTIC D'UN AEROREFRIGERANT ATMOSPHERIQUE EN BETON ARME. LES RESULTATS OBTENUS ATTESTENT DE SA FIABILITE ET DE SA CAPACITE A RENDRE COMPTE DU COMPORTEMENT DANS LE TEMPS DES STRUCTURES
Book Synopsis Mechanical Properties of Cementitious Materials at Microscale by : Ya Wei
Download or read book Mechanical Properties of Cementitious Materials at Microscale written by Ya Wei and published by Springer Nature. This book was released on 2022-11-14 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information on characterizing the microstructure and mechanical properties of cementitious materials at microscale. Specifically, with the intention to provide the methods of preparing the samples for the micro-scale mechanical testing, to address the techniques for measuring and analyzing the elastic modulus, the stiffness, and the fracture toughness of cementitious materials at micro scale by instrumented indentation, to describe a method for measuring and interpreting creep behavior of cementitious materials at micro scale, and to demonstrate the homogenization method for obtaining the mechanical properties of cementitious materials across scales. The information in this book is helpful to a wide readership in the field of civil engineering and materials science working with cementitious materials and other composite materials.
Book Synopsis Composite Materials by : Jean-Marie Berthelot
Download or read book Composite Materials written by Jean-Marie Berthelot and published by Springer. This book was released on 2013-02-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical engineering, an engineering discipline borne of the needs of the in dustrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of produc tivity and competitiveness that require engineering solutions, among others. The Mechanical Engineering Series features graduate texts and research monographs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of concentrations important to mechanical engineering graduate education and re search. We are fortunate to have a distinguished roster of consulting editors on the advisory board, each an expert in one of the areas of concentration. The names of the consulting editors are listed on the next page of this volume. The areas of concentration are applied mechanics, biomechanics, computational mechan ics, dynamic systems and control, energetics, mechanics of materials, processing, thermal science, and tribology.
Book Synopsis Analyse de l'évolution des propriétés microstructurales des bétons lors d'une élévation de la température by : Lucia Alarcon-Ruiz
Download or read book Analyse de l'évolution des propriétés microstructurales des bétons lors d'une élévation de la température written by Lucia Alarcon-Ruiz and published by . This book was released on 2003 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de la thèse est d'apporter une contribution à l'étude des phénomènes mis en jeu dans les bétons lors d'une élévation de la température et particulièrement l'évolution de la microstructure. La première partie présente un modèle Thermo-Hydro-Chimique décrivant les principales évolutions du comportement du béton sous chargements thermiques. La deuxième partie donne la définition retenue pour la dimension caractéristique du pore. Une équation différentielle portant sur la fonction donnant la nouvelle dimension caractéristique d'un pore chauffé en fonction de la dimension caractéristique initiale est présentée. L'étude expérimentale fait appel à différentes techniques caractérisant la porosité et la distribution de la dimension caractéristique. Les résultats obtenus par porosimétrie mercure, en intégrant l'équation différentielle, permettent de vérifier l'hypothèse d'érosion uniforme des pores pour un domaine de rayon d'accès et une plage de température donnés.
Download or read book Poromechanics II written by J.L. Auriault and published by CRC Press. This book was released on 2020-12-17 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings deal with the fundamentals and applications of poromechanics to geomechanics, material sciences, geophysics, acoustics and biomechanics. They discuss the state of the art in such topics as constitutive modelling and upscaling methods.
Book Synopsis Analyse et modélisation du comportement d'un matériau à matrice cimentaire fibrée à ultra hautes performances by : Mouloud Behloul
Download or read book Analyse et modélisation du comportement d'un matériau à matrice cimentaire fibrée à ultra hautes performances written by Mouloud Behloul and published by . This book was released on 1996 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de ce travail est d'étudier le comportement mécanique des bétons de poudres réactives renforces de fibres métalliques (bpr) et de définir des modèles de calcul permettant la prédiction du comportement des structures en bpr. Le comportement du bpr sous différentes sollicitations: compression, traction et flexion est présenté dans un premier temps. Ensuite, la distribution des fibres dans les structures est étudiée et son aspect aléatoire quantifié ; une formulation empirique de sa dispersion est proposée. Cet aspect aléatoire de la distribution des fibres est intégré dans un modèle probabiliste. Ce modèle, base sur la loi du maillon le plus faible, permet de rendre compte du comportement de structures sollicitées en traction directe. Une approche continue permettant la prédiction du comportement des structures fléchies est développée. La loi de comportement représentative intervenant dans ce calcul est obtenue en utilisant le modèle probabiliste. Enfin, l'ensemble de cette approche est validée sur des structures de différentes tailles, précontraintes et non précontraintes
Book Synopsis Report 25: Early Age Cracking in Cementitious Systems - Report of RILEM Technical committee TC 181-EAS: Early age cracking shrinkage induced stresses and cracking in cementitious systems by : Arnon Bentur
Download or read book Report 25: Early Age Cracking in Cementitious Systems - Report of RILEM Technical committee TC 181-EAS: Early age cracking shrinkage induced stresses and cracking in cementitious systems written by Arnon Bentur and published by RILEM Publications. This book was released on 2003 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Dynamics - Vol 1 by : Proceedings Editors
Download or read book Structural Dynamics - Vol 1 written by Proceedings Editors and published by Taylor & Francis. This book was released on 2022-03-02 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1991. This volume contains the proceedings of the first European Conference on Structural Dynamics (Eurodyne 90) held at the Ruhr University, Bochum, FRG in June 1990. Volume one (169-9) covers impact, dynamic stability, soil dynamics, system identification, earthquake engineering, earthquake engineering R/C structures, and earthquake engineering for steel structures.
Book Synopsis Micromechanics of Concrete and Cementitious Composites by : Christian Huet
Download or read book Micromechanics of Concrete and Cementitious Composites written by Christian Huet and published by . This book was released on 1993 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compressive Strength of Concrete by : Pavel Krivenko
Download or read book Compressive Strength of Concrete written by Pavel Krivenko and published by BoD – Books on Demand. This book was released on 2020-03-11 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete made using mineral cements, the raw materials which on earth are practically endless, is known as one of the oldest building materials and during the last decades of the twentieth century has become a dominant building material for general use. At the same time, the requirements of the quality of concrete and its performance properties, in particular compressive strength, durability, economical efficiency, and low negative impact of its manufacture on the environment have not yet been completely met. Bearing these requirements in mind, researchers and engineers worldwide are working on how to satisfy these requirements. This book has been written by researchers and experts in the field and provides the state of the art on recent progress achieved on the properties of concrete, including concrete in which industrial by-products are utilized. The book is dedicated to graduate students, researchers, and practicing engineers in related fields.
Book Synopsis Simulation of Hydration and Formation of Structure in Hardening Cement-based Materials by : Klaas van Breugel
Download or read book Simulation of Hydration and Formation of Structure in Hardening Cement-based Materials written by Klaas van Breugel and published by . This book was released on 1997 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Multi-Physics and Multi-Scale Couplings in Geo-Environmental Mechanics by : Francois Nicot
Download or read book Advances in Multi-Physics and Multi-Scale Couplings in Geo-Environmental Mechanics written by Francois Nicot and published by Elsevier. This book was released on 2017-11-20 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Multi-Physics and Multi-Scale Couplings in Geo-Environmental Mechanics reunites some of the most recent work from the French research group MeGe GDR (National Research Group on Multiscale and Multiphysics Couplings in Geo-Environmental Mechanics) on the theme of multi-scale and multi-physics modeling of geomaterials, with a special focus on micromechanical aspects. Its offers readers a glimpse into the current state of scientific knowledge in the field, together with the most up-to-date tools and methods of analysis available. Each chapter represents a study with a different viewpoint, alternating between phenomenological/micro-mechanically enriched and purely micromechanical approaches. Throughout the book, contributing authors will highlight advances in geomaterials modeling, while also pointing out practical implications for engineers. Topics discussed include multi-scale modeling of cohesive-less geomaterials, including multi-physical processes, but also the effects of particle breakage, large deformations on the response of the material at the specimen scale and concrete materials, together with clays as cohesive geomaterials. The book concludes by looking at some engineering problems involving larger scales. Identifies contributions in the field of geomechanics Focuses on multi-scale linkages at small scales Presents numerical simulations by discrete elements and tools of homogenization or change of scale
Book Synopsis Autogenous Shrinkage of Concrete by : Ei-ichi Tazawa
Download or read book Autogenous Shrinkage of Concrete written by Ei-ichi Tazawa and published by CRC Press. This book was released on 1999-01-28 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book forms the proceedings of a workshop held in Hiroshima in June 1998 and derive from the work of a Technical Committee of the Japan Concrete Institute. Topics include test and prediction methods, the science of autogenous shrinkage, strain and stress, and consequent design concerns.
Book Synopsis Numerical Modeling of Concrete Cracking by : Guenter Hofstetter
Download or read book Numerical Modeling of Concrete Cracking written by Guenter Hofstetter and published by Springer Science & Business Media. This book was released on 2011-10-08 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the underlying theories of the different approaches for modeling cracking of concrete and provides a critical survey of the state-of-the-art in computational concrete mechanics. It covers a broad spectrum of topics related to modeling of cracks, including continuum-based and discrete crack models, meso-scale models, advanced discretization strategies to capture evolving cracks based on the concept of finite elements with embedded discontinuities and on the extended finite element method, and extensions to coupled problems such a hygro-mechanical problems as required in computational durability analyses of concrete structures.
Book Synopsis Cement-Based Composites by : Andrzej M. Brandt
Download or read book Cement-Based Composites written by Andrzej M. Brandt and published by CRC Press. This book was released on 2009-01-29 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cement-Based Composites takes a different approach from most other books in the field by viewing concrete as an advanced composite material, and by considering the properties and behaviour of cement-based materials from this stance. It deals particularly, but not exclusively, with newer forms of cement-based materials. This new edition takes a critical approach to the subject as well as presenting up-to-date knowledge. Emphasis is given to non-conventional reinforcement and design methods, problems at the materials' interfaces and to the durability of structures. High strength composites and novel forms of cement-based composites are described in detail. After a basic introduction the book explores the various components of these materials and their properties. It then deals with mechanical properties and considers characteristics under various loading and environmental conditions, and concludes by examining design, optimization and economics with particular emphasis on high-performance concretes. Researchers, graduate students and practising engineers will find this book valuable.
