Elaboration Des Revetements De Phosphates De Zinc Sur Armature A Beton

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Élaboration des revêtements de phosphates de zinc sur armature à béton

Author : Florica Lazar
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis Élaboration des revêtements de phosphates de zinc sur armature à béton by : Florica Lazar

Download or read book Élaboration des revêtements de phosphates de zinc sur armature à béton written by Florica Lazar and published by . This book was released on 2008 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le génie civil, la durabilité des infrastructures en béton armé est principalement liée à la corrosion des armatures avant ou après leur enrobage de béton. La protection de ces armatures constitue donc un enjeu économique, environnementale et sécuritaire. Dans ce but, cette étude a porté d’une part, sur l’élaboration et la caractérisation de revêtements protecteurs de phosphates de zinc par deux méthodes : conversion chimique (CC) et traitement électrochimique cathodique (TEC) et d’autre part, sur l’étude de leurs comportements à la corrosion dans divers milieux : neutre, alcalin et cimentaire chloruré ou carbonaté. Nos investigations ont permis de : - mettre au point la formulation d’un bain de phosphatation et de réaliser des revêtements ni toxique ni onéreux constitués d’hopeite, de phosphophylite et de zinc. - préciser, en faisant appel aux techniques électrochimiques stationnaires et transitoires, le comportement à la corrosion de l’acier revêtu et l’effet protecteur du revêtement en milieu neutre chloruré ou carbonaté, alcalin (pH =12,6) et très alcalin (pH=13,2) contaminé ou non par des chlorures. - caractériser la réactivité de ces revêtements ainsi que leurs interactions avec le milieu cimentaire vis-à-vis des espèces actives (Cl-) présentes en solution, responsables de l’amorçage et de la propagation de la corrosion des armatures. - montrer que l’application des revêtements de phosphate de zinc est l’un des moyens de protection contre la corrosion du béton armé

Adhesion between polymers and concrete / Adhésion entre polymères et béton

Author : H. R. Sasse
Publisher : Springer
ISBN 13 : 9781489934543
Total Pages : 0 pages
Book Rating : 4.9/5 (345 download)

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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.

Climate in Museums

Author : Gael de Guichen
Publisher :
ISBN 13 :
Total Pages : 77 pages
Book Rating : 4.:/5 (561 download)

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Book Synopsis Climate in Museums by : Gael de Guichen

Download or read book Climate in Museums written by Gael de Guichen and published by . This book was released on 1980 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Corrosion Inhibitors for Steel in Concrete

Author : Bernhard Elsener
Publisher : CRC Press
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.X/5 (4 download)

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Book Synopsis Corrosion Inhibitors for Steel in Concrete by : Bernhard Elsener

Download or read book Corrosion Inhibitors for Steel in Concrete written by Bernhard Elsener and published by CRC Press. This book was released on 2001 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of inhibitors for rehabilitation of reinforced concrete structures is a new field of application and this new volume provides a State of the Art Report on this subject. Corrosion of steel in concrete is one of the major problems for infrastructure such as bridges, tunnels, housing etc. since it leads to spalling of the concrete and loss in cross section of the steel that may cause structural and safety problems. The steel in concrete generally resists corrosion as a result of a passive layer that develops on the metal surface in the alkaline environment of the concrete. Corrosion can occur if these conditions are disturbed, for example, in the presence of chlorides or with carbonation of concrete. Traditional repair methods consist in removing the deteriorated concrete and replacing it but these can be laborious, noisy and very costly. To avoid these disadvantages new methods have been developed in recent years. These include electrochemical procedures and, increasingly, the use of inhibitors. The use of inhibitors for rehabilitation of reinforced concrete structures is a new field of application and this new volume provides a State of the Art Report on this subject.The report, under the editorship of Prof. Bernhard Elsener, was prepared by a Task Group of the EFC Working Party on Corrosion of Reinforcement in Concrete. In a literature review it describes inorganic and organic chemicals that have been proposed and examined as well as the commercial corrosion inhibitors that are available on the market. Protection mechanism and possible effects of inhibitors on concrete properties are described. Practical experience with inhibitors for steel in concrete and the long term effectiveness are considered. The various test methods for evaluating the behaviour of the inhibitors are described and critically assessed. In a rapidly evolving field this State of the Art Report, based mainly on independent not commercial literature, will be of value to corrosion engineers and civil engineers concerned with maintenance and repair of reinforced concrete structures.

Nanostructured Coatings

Author : Albano Cavaleiro
Publisher : Springer Science & Business Media
ISBN 13 : 0387487565
Total Pages : 671 pages
Book Rating : 4.3/5 (874 download)

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Book Synopsis Nanostructured Coatings by : Albano Cavaleiro

Download or read book Nanostructured Coatings written by Albano Cavaleiro and published by Springer Science & Business Media. This book was released on 2007-02-19 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book delivers practical insight into a broad range of fields related to hard coatings, from their deposition and characterization up to the hardening and deformation mechanisms allowing the interpretation of results. The text examines relationships between structure/microstructure and mechanical properties from fundamental concepts, through types of coatings, to characterization techniques. The authors explore the search for coatings that can satisfy the criteria for successful implementation in real mechanical applications.

Oxidation of Nickel- and Cobalt-base Superalloys

Author : Carl H. Lund
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Oxidation of Nickel- and Cobalt-base Superalloys by : Carl H. Lund

Download or read book Oxidation of Nickel- and Cobalt-base Superalloys written by Carl H. Lund and published by . This book was released on 1965 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents information dealing with the oxidation of nickel- and cobalt-base superalloys. All of the superalloys will oxidize at high temperatures when oxygen is present in the enveloping atmosphere. The rate of oxidation depends upon alloy composition, temperature, oxygen concentration, oxides formed, diffusion rates of the metals in both base metal and oxide, diffusion rate of oxygen in the oxide, solubility of oxygen in the matrix, and a host of other variables. The effects of oxidation can be beneficial or they can be harmful. The first section of this report deals with the fundamentals of the oxidation of Ni-Cr and Co-Cr alloys. Subsequent sections discuss general surface oxidation, intergranular oxidation, other subsurface oxidation, and the effect of stress on the rate of oxidation. Numerous specific alloys are mentioned in the report; as an aid to the reader, the appendix contains an alloy index of the alloys mentioned in the report along with the compositions of the alloys, and the pages on which mention of the alloys is made.

Microscopy of Oxidation 2

Author : S. B. Newcomb
Publisher : CRC Press
ISBN 13 : 9780901716507
Total Pages : 593 pages
Book Rating : 4.7/5 (165 download)

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Book Synopsis Microscopy of Oxidation 2 by : S. B. Newcomb

Download or read book Microscopy of Oxidation 2 written by S. B. Newcomb and published by CRC Press. This book was released on 1993 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understanding of oxidation is essential for the study and development of advanced materials, particularly those which must withstand high temperatures. The 56 papers in this volume examine the behaviour of metals, alloys and ceramics when exposed to different environments and discuss the latest analytical microscopical techniques currently used in materials science.

Power Reactor Development

Author :
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Power Reactor Development by :

Download or read book Power Reactor Development written by and published by . This book was released on 1960 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Nanomaterials

Author : Sneha Bhagyaraj
Publisher : Woodhead Publishing
ISBN 13 : 0081019742
Total Pages : 392 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Characterization of Nanomaterials by : Sneha Bhagyaraj

Download or read book Characterization of Nanomaterials written by Sneha Bhagyaraj and published by Woodhead Publishing. This book was released on 2018-06-18 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterization of Nanomaterials: Advances and Key Technologies discusses the latest advancements in the synthesis of various types of nanomaterials. The book's main objective is to provide a comprehensive review regarding the latest advances in synthesis protocols that includes up-to-date data records on the synthesis of all kinds of inorganic nanostructures using various physical and chemical methods. The synthesis of all important nanomaterials, such as carbon nanostructures, Core-shell Quantum dots, Metal and metal oxide nanostructures, Nanoferrites, polymer nanostructures, nanofibers, and smart nanomaterials are discussed, making this a one-stop reference resource on research accomplishments in this area. Leading researchers from industry, academia, government and private research institutions across the globe have contributed to the book. Academics, researchers, scientists, engineers and students working in the field of polymer nanocomposites will benefit from its solutions for material problems. Provides an up-to-date data record on the synthesis of all kinds of organic and inorganic nanostructures using various physical and chemical methods Presents the latest advances in synthesis protocols Presents latest techniques used in the physical and chemical characterization of nanomaterials Covers characterization of all the important materials groups such as: carbon nanostructures, core-shell quantumdots, metal and metal oxide nanostructures, nanoferrites, polymer nanostructures and nanofibers A broad range of applications is covered including the performance of batteries, solar cells, water filtration, catalysts, electronics, drug delivery, tissue engineering, food packaging, sensors and fuel cells Leading researchers from industry, academia, government and private research institutes have contributed to the books

Synthesis and Characterization of Nanomaterials

Author : Ioannis Kartsonakis
Publisher : Mdpi AG
ISBN 13 : 9783036529431
Total Pages : 98 pages
Book Rating : 4.5/5 (294 download)

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Book Synopsis Synthesis and Characterization of Nanomaterials by : Ioannis Kartsonakis

Download or read book Synthesis and Characterization of Nanomaterials written by Ioannis Kartsonakis and published by Mdpi AG. This book was released on 2022-01-31 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterial is defined a natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50 % or more of the particles in the number size distribution, one or more external dimensions is in the size range 1 nm to 100 nm. Nanomaterials not only differ from the corresponding bulk materials in morphological properties but they can also demonstrate different physico-chemical characteristics. Manufactured nanomaterials are regarded as key components of innovations in various fields with high potential impact, such as energy generation and storage, electronics, photonics, diagnostics, integrated sensors, semiconductors, foods, textiles, structural materials, sunscreens, cosmetics, and coatings or drug delivery systems, and medical imaging equipment. Widespread use of nanomaterials raises concerns about their safety for humans and the environment, possibly limiting the impact of the nanotechnology-based innovation. The development of safe nanomaterials has to result in a safe, as well as functional material or product. Its safe use, and disposal at the end of its life cycle must be taken into account too. Responsibility for the safe handling of synthetic nanomaterials therefore rests with the manufacturer and importer. This book gathers and reviews the collection of five contributions (four articles and one review), with authors from Europe and America accepted for publication in the aforementioned Special Issue of Fibers.