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Simulation Experimentale De Lalcali Reaction Des Betons Etude De Linfluence Des Ions Sulfate
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Book Synopsis SIMULATION EXPERIMENTALE DE L'ALCALI-REACTION DES BETONS. ETUDE DE L'INFLUENCE DES IONS SULFATE by : VALERIE.. MICHAUD
Download or read book SIMULATION EXPERIMENTALE DE L'ALCALI-REACTION DES BETONS. ETUDE DE L'INFLUENCE DES IONS SULFATE written by VALERIE.. MICHAUD and published by . This book was released on 1995 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ALCALI-REACTION EST UNE REACTION PATHOGENE DU BETON. ELLE ENTRAINE SA FISSURATION ET LA FORMATION D'UN PRODUIT DE REACTION LOCALISE DANS LES FISSURES. ELLE RESULTE D'UNE INTERACTION ENTRE LA SILICE REACTIVE CONTENUE DANS LES GRANULATS ET LES IONS HYDROXYDES DE LA SOLUTION INTERSTITIELLE DU BETON. CETTE INTERACTION A TROIS CONSEQUENCES: ? LA REACTION ENTRE LA SILICE REACTIVE ET LES IONS HYDROXYDES QUI CONDUIT A LA DISSOLUTION PARTIELLE DE LA SILICE ET A L'IONISATION DE LA SILICE RESIDUELLE, ? LA FORMATION DE PRODUITS CALCO-SILICO-ALCALINS A PARTIR DE LA SILICE DISSOUTE ET DES IONS CALCIUM DE LA PATE DE CIMENT, ? L'APPARITION DE CONTRAINTES SUFFISANTES POUR GENERER LA FISSURATION DES OUVRAGES. L'OBJECTIF DE CE TRAVAIL EST D'ETUDIER LE ROLE DES IONS SULFATE DANS L'ALCALI-REACTION AVEC UN SOUCI DE COMPREHENSION DES PHENOMENES CHIMIQUES ET MECANIQUES IMPLIQUES DANS CETTE REACTION. UNE DEMARCHE SIMPLIFICATRICE A ETE ADOPTEE. ELLE CONSISTE A ETUDIER, EN PRESENCE D'IONS SULFATE, SEPAREMENT CHACUNE DES TROIS CONSEQUENCES DE L'INTERACTION ENTRE LA SILICE REACTIVE ET LES IONS HYDROXYDES. LES CONSTITUANTS DU BETON ONT ETE SIMULES PAR DES PHASES PURES. LES PRINCIPAUX RESULTATS SONT LES SUIVANTS: ? LA PRESENCE D'IONS SULFATE AUGMENTE LE DEGRE D'IONISATION DE LA SILICE RESIDUELLE ET DIMINUE LA CONCENTRATION DE SILICE DISSOUTE. CET EFFET EST COMMUN A L'ENSEMBLE DES ELECTROLYTES. ? LES PHASES SULFOALUMINATE DE CALCIUM HYDRATEES, PHASES SULFATEES MAJORITAIRES DE LA PATE DE CIMENT, NE SONT PAS STABLES EN PRESENCE D'IONS SILICATES. ELLES EVOLUENT VERS LA FORMATION DE PRODUITS CALCO-SILICO-ALUMINO-ALCALINS QUI N'INCORPORENT PAS D'ION SULFATE. LES IONS SULFATE N'ONT AUCUNE INFLUENCE SUR LES CARACTERISTIQUES DE CES PRODUITS. ? LA PRESENCE DE CALCIUM, DE SILICE REACTIVE, D'IONS ALCALINS ET HYDROXYDES EST SUFFISANTE POUR GENERER LA FISSURATION D'UN BETON. LES CONTRAINTES ASSOCIEES AUX DEUX PREMIERES CONSEQUENCES DE L'INTERACTION SILICE REACTIVE IONS HYDROXYDES ONT ETE MESUREES A PARTIR DE DISPOSITIFS ADAPTES CONCUS SPECIALEMENT
Book Synopsis Apports combinés de l'expérimentation et de la modélisation à la compréhension de l'alcali-réaction et de ses effets mécaniques by : Catherine Larive
Download or read book Apports combinés de l'expérimentation et de la modélisation à la compréhension de l'alcali-réaction et de ses effets mécaniques written by Catherine Larive and published by . This book was released on 1998 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL ALLIE UNE APPROCHE THEORIQUE, BASEE SUR LA MECANIQUE DES MILIEUX POREUX CONTINUS, A UNE APPROCHE EXPERIMENTALE IMPORTANTE, AFIN DE MIEUX COMPRENDRE L'ALCALI-REACTION. L'INTERET DE LA MODELISATION SE MANIFESTE DES LA CONCEPTION DU PROGRAMME D'ESSAIS, EN ORIENTANT LE CHOIX DES PRINCIPAUX PARAMETRES - APPORTS D'EAU, TEMPERATURE ET CONTRAINTE - ET EN INDUISANT UNE METHODOLOGIE D'ETUDE QUI ETABLIT UN PARALLELE ENTRE LES EFFETS MACROSCOPIQUES ET LES CAUSES MICROSCOPIQUES DE L'ALCALI-REACTION. LE VOLET EXPERIMENTAL A PORTE SUR LES DEFORMATIONS, FISSURATION, VARIATIONS DE POIDS ET CARACTERISTIQUES MECANIQUES DE SIX CENTS EPROUVETTES EN GONFLEMENT LIBRE OU SOUS CONTRAINTE UNIAXIALE. PARALLELEMENT, L'EVOLUTION DE LA MICROSTRUCTURE DU MATERIAU A ETE ETUDIEE PAR DIFFERENTES TECHNIQUES : MICROSCOPIE ELECTRONIQUE A BALAYAGE, VISUALISATION DES PRODUITS DE REACTION PAR FLUORESCENCE DES IONS URANYLE, CALCULS MINERALOGIQUES. LES PRINCIPAUX RESULTATS EXPERIMENTAUX SONT : _ L'ABSENCE DE COUPLAGE ENTRE L'ETAT DE CONTRAINTE ET LES PROCESSUS PHYSICO-CHIMIQUES CONSTITUANT L'ALCALI-REACTION, _ LA QUANTIFICATION DE L'HETEROGENEITE INTRINSEQUE ET DE L'EVOLUTION DES CARACTERISTIQUES MECANIQUES, _ L'EXPLICATION DE L'ORIGINE DE L'ANISOTROPIE DU GONFLEMENT LIBRE ET DE LA FORME SIGMOIDALE DES COURBES DE GONFLEMENT, _ LE CARACTERE SECONDAIRE DES PHENOMENES DE NATURE OSMOTIQUE, A L'ECHELLE MACROSCOPIQUE, _ LE ROLE PREPONDERANT DE LA QUANTITE D'EAU DISPONIBLE AU MOMENT DE LA FORMATION DES PRODUITS DE REACTION, ET DES PHENOMENES DE TRANSPORT, A LA FOIS SUR L'AMPLITUDE ET LA CINETIQUE DES DEFORMATIONS, _ L'EXISTENCE D'UN SEUIL DE DESSICCATION SOUS LEQUEL L'ALCALI-REACTION EST BLOQUEE, _ L'EXISTENCE D'UNE PERIODE DE LATENCE DURANT LAQUELLE LES DEFORMATIONS SONT LENTES ET DONT LA DUREE DEPEND FORTEMENT DE LA TEMPERATURE. CES RESULTATS ONT PERMIS D'IDENTIFIER LES PARAMETRES D'UNE LOI DE COMPORTEMENT DECRIVANT L'EVOLUTION D'UNE EPROUVETTE EN GONFLEMENT LIBRE.
Book Synopsis Performance of Cement-Based Materials in Aggressive Aqueous Environments by : Mark Alexander
Download or read book Performance of Cement-Based Materials in Aggressive Aqueous Environments written by Mark Alexander and published by Springer Science & Business Media. This book was released on 2012-12-18 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete and cement-based materials must operate in increasingly aggressive aqueous environments, which may be either natural or industrial. These materials may suffer degradation in which ion addition and/or ion exchange reactions occur, leading to a breakdown of the matrix microstructure and consequent weakening. Sometimes this degradation can be extremely rapid and serious such as in acidic environments, while in other cases degradation occurs over long periods. Consequences of material failure are usually severe – adversely affecting the health and well-being of human communities and disturbing ecological balances. There are also large direct costs of maintaining and replacing deteriorated infrastructure and indirect costs from loss of production during maintenance work, which place a great burden on society. The focus of this book is on addressing issues concerning performance of cement-based materials in aggressive aqueous environments , by way of this State-of-the-Art Report. The book represents the work of many well-known and respected authors who contributed chapters or parts of chapters. Four main themes were addressed: I. Nature and kinetics of degradation and deterioration mechanisms of cement-based materials in aggressive aqueous environments, II. Modelling of deterioration in such environments, III. Test methods to assess performance of cement-based materials in such environments, and which can be used to characterise and rate relative performance and inform long term predictions, IV. Engineering implications and consequences of deterioration in aggressive aqueous environments, and engineering approaches to the problem.
Book Synopsis Cementitious Materials by : Herbert Pöllmann
Download or read book Cementitious Materials written by Herbert Pöllmann and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-12-18 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aside from water the materials which are used by mankind in highest quantities arecementitious materials and concrete. This book shows how the quality of the technical product depends on mineral phases and their reactions during the hydration and strengthening process. Additives and admixtures infl uence the course of hydration and the properties. Options of reducing the CO2-production in cementitious materials are presented and numerous examples of unhydrous and hydrous phases and their formation conditions are discussed. This editorial work consists of four parts including cement composition and hydration, Special cement and binder mineral phases, Cementitious and binder materials, and Measurement and properties. Every part contains different contributions and covers a broad range within the area. Contents Part I: Cement composition and hydration Diffraction and crystallography applied to anhydrous cements Diffraction and crystallography applied to hydrating cements Synthesis of highly reactive pure cement phases Thermodynamic modelling of cement hydration: Portland cements – blended cements – calcium sulfoaluminate cements Part II: Special cement and binder mineral phases Role of hydrotalcite-type layered double hydroxides in delayed pozzolanic reactions and their bearing on mortar dating Setting control of CAC by substituted acetic acids and crystal structures of their calcium salts Crystallography and crystal chemistry of AFm phases related to cement chemistry Part III: Cementitious and binder materials Chemistry, design and application of hybrid alkali activated binders Binding materials based on calcium sulphates Magnesia building material (Sorel cement) – from basics to application New CO2-reduced cementitious systems Composition and properties of ternary binders Part IV: Measurement and properties Characterization of microstructural properties of Portland cements by analytical scanning electron microscopy Correlating XRD data with technological properties No cement production without refractories
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
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.
Book Synopsis Durability of Concrete and Cement Composites by : Chris L. Page
Download or read book Durability of Concrete and Cement Composites written by Chris L. Page and published by Elsevier. This book was released on 2007-06-30 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whilst most structures made using concrete and cement-based composites have not shown signs of premature degradation, there have been notable exceptions. In addition, there is increasing pressure for new structures to remain in serviceable condition for long periods with only minimal maintenance before being recycled. All these factors have highlighted the issues of what affects the durability of these materials in different circumstances and how material properties can be measured and improved. Durability of concrete and cement composites summarises key research on these important topics. After an introductory chapter, the book reviews the pore structure and chemistry of cement-based materials, providing the foundation for understanding the particular aspects of degradation which are discussed in the following chapters. These include dimensional stability and cracking processes, chemical and microbiological degradation of concrete, corrosion of reinforcing and prestressing steels, deterioration associated with certain aggregates, effects of frost and problems involving fibre-reinforced and polymer-cement composites. With its distinguished international team of contributors, Durability of concrete and cement composites is a standard reference for all those concerned with improving the service life of structures using these materials. Analyses a range of materials such as reinforced steel in concrete, pre-stressed concrete and cement composites Discusses key degradation phenomena such as cracking processes and the impact of cold weather conditions A standard reference for those concerned with improving the service life of structures using concrete and cement based composites
Book Synopsis Adhesion between polymers and concrete / Adhésion entre polymères et béton by : H. R. Sasse
Download or read book Adhesion between polymers and concrete / Adhésion entre polymères et béton written by H. R. Sasse and published by Springer. This book was released on 2013-11-27 with total page 0 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.
Book Synopsis Alkali-Aggregate Reaction in Concrete by : Marc-Andre Berube
Download or read book Alkali-Aggregate Reaction in Concrete written by Marc-Andre Berube and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reactive Transport in Porous Media by : Peter C. Lichtner
Download or read book Reactive Transport in Porous Media written by Peter C. Lichtner and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 34 of Reviews in Mineralogy focuses on methods to describe the extent and consequences of reactive flow and transport in natural subsurface systems. Since the field of reactive transport within the Earth Sciences is a highly multidisciplinary area of research, including geochemistry, geology, physics, chemistry, hydrology, and engineering, this book is an attempt to some extent bridge the gap between these different disciplines. This volume contains the contributions presented at a short course held in Golden, Colorado, October 25-27, 1996 in conjunction with the Mineralogical Society of America's (MSA) Annual Meeting with the Geological Society of America in Denver, Colorado.
Book Synopsis The Alkali-Silica Reaction in Concrete by : R N Swamy
Download or read book The Alkali-Silica Reaction in Concrete written by R N Swamy and published by CRC Press. This book was released on 1991-09-01 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the fundamental causes and spectrum effects of ASR. It considers he advances that have been made in our understanding of this problem throughout the world.
Book Synopsis The Chemistry of Cement and Concrete by : Frederick Measham Lea
Download or read book The Chemistry of Cement and Concrete written by Frederick Measham Lea and published by CHEMICAL Publishing Company Incorporated (NY). This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For those interested in the use of concrete in building and civil engineering construction.
Book Synopsis Applied Mineralogy of Cement & Concrete by : Maarten A.T.M. Broekmans
Download or read book Applied Mineralogy of Cement & Concrete written by Maarten A.T.M. Broekmans and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 74 of Reviews in Mineralogy and Geochemistry contains a selection of papers on the applied mineralogy of cement and concrete, by far the most popular modern building material by volume, with an annual production exceeding 9 billion cubic meters, and steadily growing. Not even all 'concrete' topics can be covered by a single volume, but an interesting assortment was finally obtained. The seven chapters deal with mineralogy and chemistry of (alumina) clinker production and hydration (Pöllmann), alternative raw clinkering materials to reduce CO2 emission (Justnes), assessment of clinker constituents by optical and electron microscopy (Stutzman), industrial assessment of raw materials, cement and concrete using X-ray methods in different applications (Meier et al.), in situ investigation of clinker and cement hydration based on quantitative crystallographic phase analysis (Aranda et al.), characterization and properties of supplementary cementitious materials (SCMs) to improve cement and concrete properties (Snellings et al.), and deleterious alkali-aggregate reaction (AAR) in concrete (Broekmans).
Download or read book Coumarins written by Richard O'Kennedy and published by Wiley. This book was released on 1997-04-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coumarins: Biology, Applications and Mode of Action predominantly focuses on the parent compound, coumarin, and its main metabolite in humans, 7-hydroxycoumarin. It describes in detail every facet of these compounds including history, toxicology, chemistry, metabolism, analysis, clinical, veterinary and other applications, their roles as immunomodulatory agents and speculates on their mode of action.
Book Synopsis Improved Oil Recovery by Surfactant and Polymer Flooding by : D.O. Shah
Download or read book Improved Oil Recovery by Surfactant and Polymer Flooding written by D.O. Shah and published by Elsevier. This book was released on 2012-12-02 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improved Oil Recovery by Surfactant and Polymer Flooding contains papers presented at the 1976 AIChE Symposium on Improved Oil Recovery by Surfactant and Polymer Flooding held in Kansas City. Organized into 18 chapters, the book includes papers that introduce petroleum reservoirs and discuss interfacial tension; molecular forces; molecular aspects of ultralow interfacial tension; the structure, formation, and phase inversion of microemulsions; and thermodynamics of micellization and related phenomena. Papers on adsorption phenomena at solid/liquid interfaces and reservoir rocks, as well as on flow through porous media studies on polymer solutions, microemulsions, and soluble oils are also provided. Significant topics on molecular, microscopic, and macroscopic aspects of oil displacement in porous media by surfactant and polymer solutions and related phenomena are also discussed. The literature cited in this book forms a comprehensive list of references in relation to improved oil recovery by surfactant and polymer flooding. This book will be useful to experts and non-experts in this field of research.
Book Synopsis Plasticity in Reinforced Concrete by : Wai-Fah Chen
Download or read book Plasticity in Reinforced Concrete written by Wai-Fah Chen and published by J. Ross Publishing. This book was released on 2007 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: J. Ross Publishing Classics are world-renowned texts and monographs written bt preeminent scholars. These books are available to students, researchers, professionals, and libararies.
Book Synopsis Fracture Mechanics and Structural Concrete by : B. L. Karihaloo
Download or read book Fracture Mechanics and Structural Concrete written by B. L. Karihaloo and published by Longman Publishing Group. This book was released on 1995-01 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fracture mechanics in resolving problems in the design of concrete structures is becoming more widely accepted and utilized as current codes cannot always be applied satisfactorily to design conditions. There is wide-ranging technical literature available on the subject but to date there is no readily accessible and systematic source to meet the needs of present practitioners and future designers. Fracture Mechanics and Structural Concrete addresses this need. The book provides a simple and straightforward study of fracture mechanics relating to concrete design and promotes its usage by highlighting the shortcomings of current design codes. It explains how fracture mechanics can overcome certain design problems, such as minimum reinforcement, punching shear failure and the influence of structural size upon shear capacity. Professional engineers, researchers and academics will find Fracture Mechanics and Structural Concrete an essential introduction to the subject. It will also be useful to postgraduate and final-year undergraduate students of civil engineering.
Book Synopsis Portland Cement Paste and Concrete by : I. Soroka
Download or read book Portland Cement Paste and Concrete written by I. Soroka and published by Palgrave. This book was released on 2013-12-31 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
