Chemistry of Cements for Nuclear Applications

Chemistry of Cements for Nuclear Applications
Author: P. Barret
Publisher: Elsevier
Total Pages: 323
Release: 1992-08-17
Genre: Technology & Engineering
ISBN: 0444596860

In recent times the nuclear industry has thrown up challenges which cannot be met by the application of conventional civil and materials engineering knowledge. The contributions in this volume investigate all aspects of cement performance. The scope of the papers demonstrate the current balance of activities which have as their objective the elucidation of kinetics and immobilization, determining material interactions and of assessing future performance. The papers reflect the varied goals of the sponsors who include national governments, the Commission of the European Communities and the nuclear industries, coming together to keep each other at the forefront of advanced technology.

Cement-Based Materials for Nuclear Waste Storage

Cement-Based Materials for Nuclear Waste Storage
Author: Florence Bart
Publisher: Springer Science & Business Media
Total Pages: 266
Release: 2012-08-16
Genre: Technology & Engineering
ISBN: 1461434459

As the re-emergence of nuclear power as an acceptable energy source on an international basis continues, the need for safe and reliable ways to dispose of radioactive waste becomes ever more critical. The ultimate goal for designing a predisposal waste-management system depends on producing waste containers suitable for storage, transportation and permanent disposal. Cement-Based Materials for Nuclear-Waste Storage provides a roadmap for the use of cementation as an applied technique for the treatment of low- and intermediate-level radioactive wastes. Coverage includes, but is not limited to, a comparison of cementation with other solidification techniques, advantages of calcium-silicate cements over other materials and a discussion of the long-term suitability and safety of waste packages as well as cement barriers.

Chemistry of Cements for Nuclear Applications

Chemistry of Cements for Nuclear Applications
Author: P. Barret
Publisher: North-Holland
Total Pages: 314
Release: 1992-01-01
Genre: Technology & Engineering
ISBN: 9780444895752

In recent times the nuclear industry has thrown up challenges which cannot be met by the application of conventional civil and materials engineering knowledge. The contributions in this volume investigate all aspects of cement performance. The scope of the papers demonstrate the current balance of activities which have as their objective the elucidation of kinetics and immobilization, determining material interactions and of assessing future performance. The papers reflect the varied goals of the sponsors who include national governments, the Commission of the European Communities and the nuclear industries, coming together to keep each other at the forefront of advanced technology.

Cement Based Materials

Cement Based Materials
Author: Hosam El-Din M. Saleh
Publisher: BoD – Books on Demand
Total Pages: 276
Release: 2018-10-10
Genre: Technology & Engineering
ISBN: 1789841534

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.

Cementitious Materials for Nuclear Waste Immobilization

Cementitious Materials for Nuclear Waste Immobilization
Author: Rehab O. Abdel Rahman
Publisher: John Wiley & Sons
Total Pages: 245
Release: 2014-11-17
Genre: Science
ISBN: 1118512006

Cementitious materials are an essential part in any radioactive waste disposal facility. Conditioning processes such as cementation are used to convert waste into a stable solid form that is insoluble and will prevent dispersion to the surrounding environment. It is incredibly important to understand the long-term behavior of these materials. This book summarises approaches and current practices in use of cementitious materials for nuclear waste immobilisation. It gives a unique description of the most important aspects of cements as nuclear waste forms: starting with a description of wastes, analyzing the cementitious systems used for immobilization and describing the technologies used, and ending with analysis of cementitious waste forms and their long term behavior in an envisaged disposal environment. Extensive research has been devoted to study the feasibility of using cement or cement based materials in immobilizing and solidifying different radioactive wastes. However, these research results are scattered. This work provides the reader with both the science and technology of the immobilization process, and the cementitious materials used to immobilize nuclear waste. It summarizes current knowledge in the field, and highlights important areas that need more investigation. The chapters include: Introduction, Portland cement, Alternative cements, Cement characterization and testing, Radioactive waste cementation, Waste cementation technology, Cementitious wasteform durability and performance assessment.

A Practical Guide to Microstructural Analysis of Cementitious Materials

A Practical Guide to Microstructural Analysis of Cementitious Materials
Author: Karen Scrivener
Publisher: CRC Press
Total Pages: 531
Release: 2018-10-09
Genre: Technology & Engineering
ISBN: 1498738672

A Practical Guide from Top-Level Industry Scientists As advanced teaching and training in the development of cementitious materials increase, the need has emerged for an up-to-date practical guide to the field suitable for graduate students and junior and general practitioners. Get the Best Use of Different Techniques and Interpretations of the Results This edited volume provides the cement science community with a state-of-the-art overview of analytical techniques used in cement chemistry to study the hydration and microstructure of cements. Each chapter focuses on a specific technique, not only describing the basic principles behind the technique, but also providing essential, practical details on its application to the study of cement hydration. Each chapter sets out present best practice, and draws attention to the limitations and potential experimental pitfalls of the technique. Databases that supply examples and that support the analysis and interpretation of the experimental results strengthen a very valuable ready reference. Utilizing the day-to-day experience of practical experts in the field, this book: Covers sample preparation issues Discusses commonly used techniques for identifying and quantifying the phases making up cementitious materials (X-ray diffraction and thermogravimetric analysis) Presents good practice oncalorimetry and chemical shrinkage methods for studying cement hydration kinetics Examines two different applications of nuclear magnetic resonance (solid state NMR and proton relaxometry) Takes a look at electron microscopy, the preeminent microstructural characterization technique for cementitious materials Explains how to use and interpret mercury intrusion porosimetry Details techniques for powder characterization of cementitious materials Outlines the practical application of phase diagrams for hydrated cements Avoid common pitfalls by using A Practical Guide to Microstructural Analysis of Cementitious Materials. A one-of-a-kind reference providing the do’s and don’ts of cement chemistry, the book presents the latest research and development of characterisation techniques for cementitious materials, and serves as an invaluable resource for practicing professionals specializing in cement and concrete materials and other areas of cement and concrete technology.

Mechanisms of Chemical Degradation of Cement-based Systems

Mechanisms of Chemical Degradation of Cement-based Systems
Author: K.L. Scrivener
Publisher: CRC Press
Total Pages: 474
Release: 1997-04-17
Genre: Architecture
ISBN: 9780419215707

Deterioration of cement-based materials is a continuing problem, as it results in the substantial shortening of the lives of conventional concrete structures. The main costs result from poor performance and the need for early repair. With more advanced applications, where very long service lives are essential, such as the storage of nuclear waste, an understanding of the degradation processes in order to predict long term performance is very important. this book forms the proceedings of the latest Symposia at the Materials Research Society Autumn meeting in Boston.

Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste

Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste
Author: Michael J Apted
Publisher: Elsevier
Total Pages: 789
Release: 2010-07-27
Genre: Technology & Engineering
ISBN: 1845699785

Geological disposal has been internationally adopted as the most effective approach to assure the long-term, safe disposition of the used nuclear fuels and radioactive waste materials produced from nuclear power generation, nuclear weapons programs, medical, treatments, and industrial applications. Geological repository systems take advantage of natural geological barriers augmented with engineered barrier systems to isolate these radioactive materials from the environment and from future populations.Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste critically reviews the state-of-the-art technologies, scientific methods, regulatory developments, and social engagement approaches directly related to the implementation of geological repository systems.Part one introduces geological disposal, including multiple-barrier geological repositories, as well as reviewing the impact of nuclear fuel recycling practices and underground research laboratory activities on the development of disposal concepts. Part two reviews geological repository siting in different host rocks, including long-term stability analysis and radionuclide transport modelling. Reviews of the range of engineered barrier systems, including waste immobilisation technologies, container materials, low pH concretes, clay-based buffer and backfill materials, and barrier performance are presented in Part three. Part four examines total system performance assessment and safety analyses for deep geological and near-surface disposal, with coverage of uncertainty analysis, use of expert judgement for decision making, and development and use of knowledge management systems. Finally, Part five covers regulatory and social approaches for the establishment of geological disposal programs, from the development of radiation standards and risk-informed, performance-based regulations, to environmental monitoring and social engagement in the siting and operation of repositories.With its distinguished international team of contributors, Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste is a standard reference for all nuclear waste management and geological repository professionals and researchers. - Critically reviews the state-of-the-art technologies, scientific methods, regulatory developments, and social engagement approaches related to the implementation of geological repository systems - Chapters introduce geological disposal and review the development of disposal concepts - Examines long-term stability analysis, the range of engineered barrier systems and barrier performance

Sustainability of Life Cycle Management for Nuclear Cementation-Based Technologies

Sustainability of Life Cycle Management for Nuclear Cementation-Based Technologies
Author: Rehab O. Abdel Rahman
Publisher: Woodhead Publishing
Total Pages: 676
Release: 2021-05-25
Genre: Technology & Engineering
ISBN: 0128183292

Sustainability of Life Cycle Management for Nuclear Cementation-Based Technologies, edited by Dr. Rahman and Dr. Ojovan, presents the latest knowledge and research on the management of cementitious systems within nuclear power plants. The book covers aging, development and updates on regulatory frameworks on a global scale, the development of cementitious systems for the immobilization of problematic wastes, and the decommissioning and decontamination of complex cementitious systems. The book's editors and their team of experts combine their practical knowledge to provide the reader with a thorough understanding on the sustainability of lifecycle management of cementitious systems within the nuclear industry. Sections provide a comparative tool that presents national regulations concerning cementitious systems within nuclear power plants, check international and national evaluation results of the sustainability of different systems, help in the development of performance test procedures, and provide a guide on aging nuclear power plants and the long-term behavior of these systems in active and passive safety environments. - Presents the latest information on the behavior of different cementitious systems used in the nuclear industry in one comprehensive resource - Includes scientific justifications of system behavior during the design, operation, maintenance and decommissioning phases - Aids the reader in the development of evaluation tests for problematic wastes