Cementitious Materials For Nuclear Waste Immobilization

Author : Rehab O. Abdel Rahman,Ravil Z. Rakhimov,Nailia R. Rakhimova,Michael I. Ojovan
Publisher : John Wiley & Sons
Page : 248 pages
File Size : 48,9 Mb
Release : 2014-08-28
Category : Science
ISBN : 9781118511978

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Cementitious Materials for Nuclear Waste Immobilization by Rehab O. Abdel Rahman,Ravil Z. Rakhimov,Nailia R. Rakhimova,Michael I. Ojovan Pdf

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.

Author : Florence Bart,Céline Cau-di-Coumes,Fabien Frizon,Sylvie Lorente
Publisher : Springer Science & Business Media
Page : 266 pages
File Size : 43,6 Mb
Release : 2012-08-16
Category : Technology & Engineering
ISBN : 9781461434450

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Cement-Based Materials for Nuclear Waste Storage by Florence Bart,Céline Cau-di-Coumes,Fabien Frizon,Sylvie Lorente Pdf

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.

Author : Michael I. Ojovan,Neil C. Hyatt
Publisher : MDPI
Page : 220 pages
File Size : 48,6 Mb
Release : 2020-01-09
Category : Technology & Engineering
ISBN : 9783039218462

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Materials for Nuclear Waste Immobilization by Michael I. Ojovan,Neil C. Hyatt Pdf

The book outlines recent advances in nuclear wasteform materials including glasses, ceramics and cements and spent nuclear fuel. It focuses on durability aspects and contains data on performance of nuclear wasteforms as well as expected behavior in a disposal environment.

Author : Michael I. Ojovan,W. E. Lee
Publisher : Elsevier
Page : 378 pages
File Size : 41,5 Mb
Release : 2016-06
Category : Electronic
ISBN : 0081013639

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An Introduction to Nuclear Waste Immobilization by Michael I. Ojovan,W. E. Lee Pdf

Drawing on the authors extensive experience in the processing and disposal of waste, "An Introduction to Nuclear Waste Immobilisation," "Second Edition"examines the gamut of nuclear waste issues from the natural level of radionuclides in the environment to geological disposal of waste-forms and their long-term behavior. It covers all-important aspects of processing and immobilization, including nuclear decay, regulations, new technologies and methods. Significant focus is given to the analysis of the various matrices used, especially cement and glass, with further discussion of other matrices such as bitumen. The final chapter concentrates on the performance assessment of immobilizing materials and safety of disposal, providing a full range of the resources needed to understand and correctly immobilize nuclear waste. The fully revised second edition focuses on core technologies and has an integrated approach to immobilization and hazardsEach chapter focuses on a different matrix used in nuclear waste immobilization: cement, bitumen, glass and new materialsKeeps the most important issues surrounding nuclear waste - such as treatment schemes and technologies and disposal - at the forefront"

Author : Neil C. Hyatt,Michael I Ojovan
Publisher : Unknown
Page : 220 pages
File Size : 52,9 Mb
Release : 2020
Category : Engineering (General). Civil engineering (General)
ISBN : 3039218476

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Materials for Nuclear Waste Immobilization by Neil C. Hyatt,Michael I Ojovan Pdf

The book outlines recent advances in nuclear wasteform materials including glasses, ceramics and cements and spent nuclear fuel. It focuses on durability aspects and contains data on performance of nuclear wasteforms as well as expected behavior in a disposal environment.

Author : Rehab O. Abdel Rahman,Ravil Z. Rakhimov,Nailia R. Rakhimova,Michael I. Ojovan
Publisher : John Wiley & Sons
Page : 245 pages
File Size : 55,9 Mb
Release : 2014-11-17
Category : Science
ISBN : 9781118512005

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Cementitious Materials for Nuclear Waste Immobilization by Rehab O. Abdel Rahman,Ravil Z. Rakhimov,Nailia R. Rakhimova,Michael I. Ojovan Pdf

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.

Author : Michael Ochs,Dirk Mallants,Lian Wang
Publisher : Springer
Page : 301 pages
File Size : 40,8 Mb
Release : 2015-10-17
Category : Technology & Engineering
ISBN : 9783319236513

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Radionuclide and Metal Sorption on Cement and Concrete by Michael Ochs,Dirk Mallants,Lian Wang Pdf

Cementitious materials are being widely used as solidification/stabilisation and barrier materials for a variety of chemical and radioactive wastes, primarily due to their favourable retention properties for metals, radionuclides and other contaminants. The retention properties result from various mineral phases in hydrated cement that possess a high density and diversity of reactive sites for the fixation of contaminants through a variety of sorption and incorporation reactions. This book presents a state of the art review and critical evaluation of the type and magnitude of the various sorption and incorporation processes in hydrated cement systems for twenty-five elements relevant for a broad range of radioactive and industrial wastes. Effects of cement evolution or ageing on sorption/incorporation processes are explicitly evaluated and quantified. While the immobilisation of contaminants by mixing-in during hydration is not explicitly addressed, the underlying chemical processes are similar. A quantitative database on the solid/liquid distribution behaviour of radionuclides and other elements in hydrated cement systems is established on the basis of a consistent review and re-evaluation of literature data. In addition to recommended values, all underlying original experimental data and key experimental info rmation are provided, which allows users to trace the given recommendations or to develop their own set of key values. This database is closely tied to the safety analysis of near surface disposal of radioactive waste in Belgium. It focuses on radioelements, toxic stable elements and heavy metals, which makes it relevant for investigations involving the interaction of radioactive and conventional contaminants with cement-based barriers.

Author : Hosam El-Din M. Saleh,Rehab Abdel Rahman
Publisher : BoD – Books on Demand
Page : 276 pages
File Size : 50,7 Mb
Release : 2018-10-10
Category : Technology & Engineering
ISBN : 9781789841534

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Cement Based Materials by Hosam El-Din M. Saleh,Rehab Abdel Rahman Pdf

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.

Author : Michael I Ojovan,William E. Lee
Publisher : Newnes
Page : 376 pages
File Size : 41,9 Mb
Release : 2013-12-03
Category : Technology & Engineering
ISBN : 9780080993935

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An Introduction to Nuclear Waste Immobilisation by Michael I Ojovan,William E. Lee Pdf

Drawing on the authors’ extensive experience in the processing and disposal of waste, An Introduction to Nuclear Waste Immobilisation, Second Edition examines the gamut of nuclear waste issues from the natural level of radionuclides in the environment to geological disposal of waste-forms and their long-term behavior. It covers all-important aspects of processing and immobilization, including nuclear decay, regulations, new technologies and methods. Significant focus is given to the analysis of the various matrices used, especially cement and glass, with further discussion of other matrices such as bitumen. The final chapter concentrates on the performance assessment of immobilizing materials and safety of disposal, providing a full range of the resources needed to understand and correctly immobilize nuclear waste. The fully revised second edition focuses on core technologies and has an integrated approach to immobilization and hazards Each chapter focuses on a different matrix used in nuclear waste immobilization: cement, bitumen, glass and new materials Keeps the most important issues surrounding nuclear waste - such as treatment schemes and technologies and disposal - at the forefront

Author : Roger D. Spence,Caijun Shi
Publisher : CRC Press
Page : 392 pages
File Size : 46,6 Mb
Release : 2004-12-28
Category : Science
ISBN : 9781420032789

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Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes by Roger D. Spence,Caijun Shi Pdf

The development of stabilization and solidification techniques in the field of waste treatment reflects the efforts to better protect human health and the environment with modern advances in materials and technology. Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes provides comprehensive information including case studies, selection criteria, and regulatory considerations on waste characterization, contaminant transport and leachability, testing methods for stabilized waste forms, and the interactions between contaminants and stabilizing components. The book describes various systems based on cement technology that are used for stabilization and solidification of wastes. It demonstrates how to design a stabilized waste form, including the use of statistical techniques for generating response surface models for large, complicated applications. It provides guidelines for the selection of bonding materials, such as hydraulic cements, polymers, and hydroceramics, and discusses several additives and sorbents used to enhance immobilization, binder properties, and contaminant stabilization. The book portrays the transport mechanisms of contaminants in treated wastes and how to predict the transport of contaminants with various mathematical models. Following a discussion of waste types, principles, and properties of cemented waste forms, such as microstructure and durability, it outlines the test methods used to evaluate them. Fusing research, technology, and general practice principles taken from the firsthand experience of scientists, engineers, regulators, and teachers, Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes can be used in advanced environmental engineering courses and as a reference for stabilization and solidification engineers, technology vendors and buyers, laboratory technicians, scientists, environmentalists, policymakers, and managers in treatment storage and disposal facilities.

Author : Rehab O. Abdel Rahman,Michael I. Ojovan
Publisher : Woodhead Publishing
Page : 676 pages
File Size : 48,8 Mb
Release : 2021-05-25
Category : Technology & Engineering
ISBN : 9780128183298

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Sustainability of Life Cycle Management for Nuclear Cementation-Based Technologies by Rehab O. Abdel Rahman,Michael I. Ojovan Pdf

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

Author : France. Commissariat à l'énergie atomique (CEA)
Publisher : Le Moniteur Editions
Page : 160 pages
File Size : 47,5 Mb
Release : 2009
Category : Science
ISBN : IND:30000126702814

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Nuclear Waste Conditioning by France. Commissariat à l'énergie atomique (CEA) Pdf

Author : International Atomic Energy Agency
Publisher : IAEA
Page : 188 pages
File Size : 53,5 Mb
Release : 2007
Category : Business & Economics
ISBN : UOM:39015068766214

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Strategy and Methodology for Radioactive Waste Characterization by International Atomic Energy Agency Pdf

Over the past decade significant progress has been achieved in the development of waste characterization and control procedures and equipment as a direct response to ever-increasing requirements for quality and reliability of information on waste characteristics. Failure in control procedures at any step can have important, adverse consequences and may result in producing waste packages which are not compliant with the waste acceptance criteria for disposal, thereby adversely impacting the repository. The information and guidance included in this publication corresponds to recent achievements and reflects the optimum approaches, thereby reducing the potential for error and enhancing the quality of the end product. -- Publisher's description.

Author : National Research Council,Division on Earth and Life Studies,Nuclear and Radiation Studies Board,Committee on the Management of Certain Radioactive Waste Streams Stored in Tanks at Three Department of Energy Sites
Publisher : National Academies Press
Page : 214 pages
File Size : 42,9 Mb
Release : 2006-09-12
Category : Science
ISBN : 9780309180146

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Tank Waste Retrieval, Processing, and On-site Disposal at Three Department of Energy Sites by National Research Council,Division on Earth and Life Studies,Nuclear and Radiation Studies Board,Committee on the Management of Certain Radioactive Waste Streams Stored in Tanks at Three Department of Energy Sites Pdf

DOE Tank Waste: How clean is clean enough? The U.S. Congress asked the National Academies to evaluate the Department of Energy's (DOE's) plans for cleaning up defense-related radioactive wastes stored in underground tanks at three sites: the Hanford Site in Washington State, the Savannah River Site in South Carolina, and the Idaho National Laboratory. DOE plans to remove the waste from the tanks, separate out high-level radioactive waste to be shipped to an off-site geological repository, and dispose of the remaining lower-activity waste onsite. The report concludes that DOE's overall plan is workable, but some important challenges must be overcomeâ€"including the removal of residual waste from some tanks, especially at Hanford and Savannah River. The report recommends that DOE pursue a more risk-informed, consistent, participatory, and transparent for making decisions about how much waste to retrieve from tanks and how much to dispose of onsite. The report offers several other detailed recommendations to improve the technical soundness of DOE's tank cleanup plans.

Author : Michael Ochs,Dirk Mallants,Lian Wang
Publisher : Springer
Page : 301 pages
File Size : 40,6 Mb
Release : 2016-08-23
Category : Technology & Engineering
ISBN : 3319342584

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Radionuclide and Metal Sorption on Cement and Concrete by Michael Ochs,Dirk Mallants,Lian Wang Pdf

Cementitious materials are being widely used as solidification/stabilisation and barrier materials for a variety of chemical and radioactive wastes, primarily due to their favourable retention properties for metals, radionuclides and other contaminants. The retention properties result from various mineral phases in hydrated cement that possess a high density and diversity of reactive sites for the fixation of contaminants through a variety of sorption and incorporation reactions. This book presents a state of the art review and critical evaluation of the type and magnitude of the various sorption and incorporation processes in hydrated cement systems for twenty-five elements relevant for a broad range of radioactive and industrial wastes. Effects of cement evolution or ageing on sorption/incorporation processes are explicitly evaluated and quantified. While the immobilisation of contaminants by mixing-in during hydration is not explicitly addressed, the underlying chemical processes are similar. A quantitative database on the solid/liquid distribution behaviour of radionuclides and other elements in hydrated cement systems is established on the basis of a consistent review and re-evaluation of literature data. In addition to recommended values, all underlying original experimental data and key experimental info rmation are provided, which allows users to trace the given recommendations or to develop their own set of key values. This database is closely tied to the safety analysis of near surface disposal of radioactive waste in Belgium. It focuses on radioelements, toxic stable elements and heavy metals, which makes it relevant for investigations involving the interaction of radioactive and conventional contaminants with cement-based barriers.