Download or read book CONTRIBUTION A L ETUDE DU COMPORTEMENT DES DALLES EN BETON ET FIBRE SOUS SOLLICITATION DE CHOC written by MAHMOUD.. RAZANI and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJET DE LA PRESENTE RECHERCHE EST L'ETUDE DU COMPORTEMENT DES DALLES EN BETON ARME FIBREUX VIS-A-VIS DES CHOCS MOUS. DANS LE CHAPITRE BIBLIOGRAPHIQUE, NOUS PRESENTONS, DANS UN PREMIER TEMPS, LES PRINCIPALES METHODES DE CALCUL DES SYSTEMES SIMPLES ET A MASSE REPARTIE; ENSUITE LES CAMPAGNES D'ESSAIS A GRANDE ECHELLE DE DALLES EN BETON ARME, DESTINEES A FOURNIR DES FORMULES EMPIRIQUES DE DIMENSIONNEMENT; ENFIN, LES EXPERIMENTATIONS VISANT A METTRE EN EVIDENCE L'INFLUENCE DES PRINCIPAUX PARAMETRES (CARACTERISTIQUES DU MATERIAU, GEOMETRIE DE L'EPROUVETTE, SOLLICITATION APPLIQUEE) SUR LE COMPORTEMENT MECANIQUE DES ECHANTILLONS (RESISTANCE MAXIMALE, ENERGIE DE DEFORMATION, MODE DE RUINE). LE DEUXIEME CHAPITRE CONCERNE LA CARACTERISATION EXPERIMENTALE DES MATERIAUX: NOUS METTONS EN EVIDENCE L'INFLUENCE DE LA VITESSE DE CHARGEMENT SUR LA LOI DE COMPORTEMENT DES MATERIAUX SOLLICITES EN COMPRESSION SIMPLE. LE TROISIEME CHAPITRE EST CONSACRE A L'EXPERIMENTATION DES DALLES SOUMISES A DES CHARGEMENTS STATIQUE ET DE CHOC. LES DEFORMATIONS ET DEPLACEMENTS A PLUSIEURS ENDROITS DE LA SURFACE ET DES SECTIONS DE LA DALLE, AINSI QUE LA CHARGE AU CENTRE, SONT ANALYSES. LES COURBES CHARGE-FLECHE ET MOMENT-COURBURE SONT ETABLIES. LA PREMIERE PARTIE DU DERNIER CHAPITRE CONCERNE LE CALCUL DES COURBES MOMENT-COURBURE DES SECTIONS A L'AIDE D'UN PROGRAMME NUMERIQUE PRENANT EN CONSIDERATION LES LOIS DE COMPORTEMENT COMPLETES DES MATERIAUX. DANS UN SECOND TEMPS, LA REPONSE EN COURBURE DES DALLES A LA SOLLICITATION DE CHOC EST CALCULEE A L'AIDE D'UN LOGICIEL BASE SUR LA METHODE DES ELEMENTS FINIS ET SUR LA CONSIDERATION DE DIAGRAMMES MOMENT-COURBURE BILINEAIRES DES SECTIONS DE BETON ARME, ET DE FONCTIONS DE CHARGEMENT QUELCONQUES. LA TROISIEME PARTIE CONCERNE LA MODELISATION DE LA DALLE ET DE SES APPUIS ELASTIQUES EN SYSTEME MASSE-RESSORT NON AMORTI A 2 DEGRES DE LIBERTE, ET LE CALCUL NUMERIQUE DE CE SYSTEME PAR UNE

Download or read book CONTRIBUTION A L ETUDE DU COMPORTEMENT AU CHOC DU MORTIER ET DU BETON DE FIBRES written by KAMEL.. ZAYAT and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DE LA REPONSE STATIQUE ET DYNAMIQUE DE MORTIERS RENFORCES PAR RUBANS DE VERRE METALLIQUE. ESSAIS STATIQUES DE COMPRESSION ET DE FLEXION (ETABLISSANT A PARTIR DES DERNIERS LA RESISTANCE A LA TRACTION); ESSAIS DE CHOC DE COMPRESSION MONOAXIALE: MESURES EXTENSOMETRIQUES ET D'ACCELERATION, ENREGISTREMENT PHOTOGRAPHIQUES (CAMERA ULTRA RAPIDE). INFLUENCE DES FIBRES SUR LES RELATIONS CONTRAINTE-DEFORMATION, LA DUREE DU CHOC ET LES MODES D'ENDOMMAGEMENT, PRENANT EN COMPTE LES PHENOMENES DE REFLEXION ET DE PROPAGATION D'ONDES DANS LES MATERIAUX ORTHOTROPES ET L'EFFET DE STRUCTURE CORRESPONDANT AU MODE DE RUPTURE LOCALISEE

Download or read book Contribution l analyse de la r ponse aux chocs de structures en b ton arm written by Mohamed Sabri and published by . This book was released on 2006 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: En région montagneuse où Ie risque de chutes de blocs rocheux sur les ouvrages est élevé, une des préoccupations actuelles concerne l'identification des efforts d'impact et la connaissance de l'endommagement des ouvrages impactes. L'objet de l'étude présentée est d'apporter une contribution à l'analyse de la réponse aux chocs de structures en béton armé. Trois axes ont été abordes dans cette étude : I) L'analyse directe des sollicitations d'impact. Cette étude est gouvernée par des mises en équations du comportement au choc au moyen d'équations différentielles ou d'équations aux dérivées partielles. La solution des problèmes étudiés a été établie en développant une méthode de résolution analytique (le modèle doubles masses déformables) et par la méthode des éléments finis. Les outils d'analyse directe développés permettent d'une part d'obtenir les champs de déplacements, de déformations et d’accélérations lors d'un choc et, d'autre part, d'évaluer la sensibilité de la réponse directe (au choc) aux variables d'entrée, cela en vue d'une analyse inverse. II) L'analyse inverse des sollicitations d'impact. Cette analyse met en évidence les deux principales difficultés des problèmes inverses lors de sollicitations dynamiques : d'une part les problèmes d’expérimentation et de méconnaissance des conditions aux limites réelles des structures et d'autre part les problèmes spécifiques de la résolution d'un problème inverse. III) Le développement de modèles simplifiées appliqués à l'estimation des efforts d'impact dans des dalles structurellement dissipantes. L'étude réalisée dans cette troisième partie propose des approches d’estimation de l'endommagement et des efforts appliquesài une structure à partir des mesures expérimentales. Les résultats de cette étude sont applicables en phase précoce de conception ou en phase d'avant projet où l'on analyse, en fonction des géométries, les efforts dans des dalles ou poutres impactées

Download or read book Etudes exp rimentales et num riques du comportement des dalles paisses en b ton arm sous chargement de cisaillement et interaction cisaillement effet de membrane written by Wendpanga Serge Auguste Nana and published by . This book was released on 2017 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette contribution, en s'appuyant sur expérimentation et modélisation numérique vise à une meilleure compréhension du comportement des dalles en béton armé sous sollicitations de cisaillement. Une campagne expérimentale a été réalisée sur des dalles épaisses à pleine échelle de centrales nucléaires. Ces dalles sans armatures d'effort tranchant sont soumises à une sollicitation de cisaillement en chargement quasi-statique. Les essais sont réalisés en faisant varier différents paramètres qui peuvent influencer le comportement au cisaillement. Sont ainsi étudiés : résistance en compression du béton, épaisseur, taux d'armatures longitudinales et transversales, taille des granulats, longueur de la plaque de chargement. L'influence des efforts de membrane, de compression ou de traction, sur le comportement au cisaillement a également été analysée. Les résultats des essais sont ensuite comparés aux prédictions des codes de calcul. Ces résultats ont d'abord permis d'apporter une réponse aux divergences qui existent entre l'Eurocode 2 et l'Annexe Nationale Française quant à la prédiction du cisaillement. Ont également été évalués le niveau de précision donné par d'autres normes de dimensionnement au cisaillement: la norme américaine ACI 318-14, le code nucléaire AFCEN ETC-C 2010, le fib-Model Code 2010 et l'approche par la théorie de la fissure critique de cisaillement CSCT. Ensuite est évalué la possibilité d'analyses non-linéaire par élément finis (EF) pour reproduire le phénomène du cisaillement dans les dalles. Un modèle de béton élastoplastique avec endommagement est combiné à une analyse quasi-statique à schéma de résolution explicite. Des lois de comportement non linéaires appropriées du béton avec des comportements post-pic associés à un critère énergétique ont été considérées. La bonne concordance entre le modèle proposé et les résultats expérimentaux en termes de résistance au cisaillement et de modes de rupture permet de valider la modélisation proposée. Une étude paramétrique a été réalisée sur la base du modèle proposé avec les mêmes propriétés mécaniques de béton. Des lois simplifiées permettant d'estimer les capacités en cisaillement en fonction des différents paramètres étudiés sont finalement proposées.

Download or read book CONTRIBUTION A L ETUDE DU BETON ARME EXPANSIF APPLICATION AUX CAS DES DALLES written by TAOUFIK.. CHERIET and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE CONCERNE LE COMPORTEMENT DE DALLES DE BETON ARME EXPANSIF SOUMISES A UNE SOLLICITATION INTERNE DUE AU GONFLEMENT DU LIANT HYDRAULIQUE. LA PREMIERE PARTIE DE CE TRAVAIL CONCERNE UNE ETUDE BIBLIOGRAPHIQUE SUR LES CIMENTS ET LES BETONS EXPANSIFS, AINSI QUE L'INFLUENCE DES ARMATURES (TAUX, DIRECTION) SUR L'EXPANSION ET LES AUTOCONTRAINTES. LA DEUXIEME TRAITE DE L'ETUDE DE L'EXPANSION LIBRE OU SOUS CONTRAINTE DU LIANT UTILISE EN PRENANT EN COMPTE L'INFLUENCE DE LA DIMENSION DES GRANULATS. UNE EXPERIMENTATION SUR DES DALLES EN BETON ARME EXPANSIF NOUS A PERMIS DE CONNAITRE D'UNE PART LA DISTRIBUTION DES DEFORMATIONS ET DES CONTRAINTES ET D'AUTRE PART L'INFLUENCE DU TAUX DE FERRAILLAGE SUR L'EXPANSION ET LES AUTOCONTRAINTES. NOUS AVONS DEVELOPPE ET UTILISE DEUX MODELES PERMETTANT DE DECRIRE LE COMPORTEMENT DE CES STRUCTURES ET DE CONNAITRE LA DISTRIBUTION DES CONTRAINTES ET DES DEFORMATIONS A UN INSTANT T DONNE: UNE MODELISATION MULTICOUCHE D'UNE PART ET UNE MODELISATION EN ELEMENTS FINIS D'AUTRE PART. UNE CONFRONTATION AVEC LES VALEURS EXPERIMENTALES NOUS A PERMIS DE TESTER ET VALIDER LES DEUX MODELES. CES DEUX METHODES NUMERIQUES PERMETTENT DE MODELISER AVEC UNE BONNE PRECISION LE COMPORTEMENT DES DALLES AVEC LA SEULE CONNAISSANCE DE L'EXPANSION LIBRE ET DES CARACTERISTIQUES MECANIQUES DU BETON AINSI QUE LA GEOMETRIE DE LA STRUCTURE ETUDIEE, CE QUI EST UN AVANTAGE NON NEGLIGEABLE PAR RAPPORT AUX METHODES EXISTANTES (ACI, TSUJI)

Download or read book Adhesion Between Polymers and Concrete Adh sion Entre Polym res Et B ton written by H. R. Sasse and published by Springer. This book was released on 1986 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Dictionary of the French and English Languages written by Gabriel Surenne and published by . This book was released on 1856 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book In Vessel Melt Retention and Ex Vessel Corium Cooling IAEA Tecdoc No 1906 written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2020-08-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.

Download or read book Routledge International Handbook of Ignorance Studies written by Matthias Gross and published by Routledge. This book was released on 2015-05-15 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once treated as the absence of knowledge, ignorance today has become a highly influential topic in its own right, commanding growing attention across the natural and social sciences where a wide range of scholars have begun to explore the social life and political issues involved in the distribution and strategic use of not knowing. The field is growing fast and this handbook reflects this interdisciplinary field of study by drawing contributions from economics, sociology, history, philosophy, cultural studies, anthropology, feminist studies, and related fields in order to serve as a seminal guide to the political, legal and social uses of ignorance in social and political life. Chapter 33 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license available here: https://tandfbis.s3-us-west-2.amazonaws.com/rt-files/docs/Open+Access+Chapters/9780415718967_oachapter33.pdf

Download or read book Designing and Building with UHPFRC written by Jacques Resplendino and published by John Wiley & Sons. This book was released on 2013-01-29 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the international workshop “Designing and Building with Ultra-High Performance Fibre-Reinforced Concrete (UHPFRC): State of the Art and Development”, organized by AFGC, the French Association for Civil Engineering and French branch of fib, in Marseille (France), November 17-18, 2009. This workshop was focused on the experience of a lot of recent UHPFRC realizations. Through more than 50 papers, this book details the experience of many countries in UHPFRC construction and design, including projects from Japan, Germany, Australia, Austria, USA, Denmark, the Netherlands, Canada... and France. The projects are categorized as novel architectural solutions, new frontiers for bridges, new equipments and structural components, and extending the service life of structures. The last part presents major research results, durability and sustainability aspects, and the updated AFGC Recommendations on UHPFRC.

Download or read book Ultra High Performance Concrete written by Ekkehard Fehling and published by kassel university press GmbH. This book was released on 2008-01-01 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compact Reinforced Composite Basic Principles written by Hans Henrik Bache and published by . This book was released on 1987 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cambridge Yearbook of European Legal Studies Vol 13 2010 2011 written by Catherine Barnard and published by Bloomsbury Publishing. This book was released on 2011-12-15 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.

Download or read book PRO 30 4th International RILEM Workshop on High Performance Fiber Reinforced Cement Composites HPFRCC 4 written by Antoine E. Naaman and published by RILEM Publications. This book was released on 2003 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fiber reinforced Cement Composites written by Perumalsamy N. Balaguru and published by McGraw-Hill Companies. This book was released on 1992 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: