Cementitious Matrices for Low- and Intermediate-Level Radioactive Waste Immobilization

Dr. Kryvenko is currently a professor in the Department of Technology of Building Structures and Products and director of the Scientific Research Institute for Binders and Materials, Kyiv National University of Construction and Architecture, Ukraine. He graduated from the Dnepropetrovsk Civil Engineering Institute with an Engineer in Building Materials Technology diploma in 1961. He received his PhD from the Kyiv Civil Engineering Institute in 1971 and a DSc from the Kyiv Polytechnical Institute in 1986. His research interests include the synthesis of alkali-activated cements and materials based on them. He is not only a prolific author, but also principal investigator on several national and international projects. He is a member of the International Union of Laboratories and Experts in Construction Materials, a member of the Systems and Structures (RILEM) technical committees on alkali-activated materials, an editorial board member for three international journals, the 2001 winner of the State Prize of Ukraine in the field of Science and Engineering. Dr. Puertas is a Research Professor for the Spanish National Research Council (CSIC), at the Eduardo Torroja Institute of Construction Sciences. She has a PhD in Chemical Sciences from the Autonomous University of Madrid. Her research focuses on the physical and chemical properties of Portland cement and its manufacturing process; the use of alternative materials (waste and industrial by-products) in the manufacture of cement and concrete; the development of new, more eco-sustainable types of cement; the deterioration processes of a variety of cement, mortars and concrete; the role of admixtures on the properties and behavior of concrete. She is a prolific author, has led many national and international R&D projects, and holds four patents. She is the Director of the CSIC High Specialization postgraduate course in Cement Chemistry and has been appointed as honorary EiC of the international scientific journal Construction Materials (CSIC) and as the Associate Editor of the Cement and Concrete Composites (Elsevier). In 2010, she received the award for 'Best Scientific Career' by the Spanish Society of Materials (SOCIEMAT). Dr. Schroeyers is Full Professor at Hasselt University, Belgium. He is the head of the educational management team for nuclear technology and a researcher at the Nuclear Technological Centre (NuTeC) of the Research Institute for Environmental Sciences (CMK). He completed a PhD in Chemistry at KU Leuven in 2005. His research, at the intersection of chemistry, materials science, and nuclear engineering, focuses on developing suitable management options for radiological residues., particularly on methods and protocols for characterization of natural and artificial radionuclides, radiological monitoring, nuclear decommissioning, recycling and immobilization of radiological wastes and residues in cementitious binders and concrete. He was the chair of the COST Action NORM4Building (2014-2017) and is the co-founder of the European NORM Association (2017) and the SHARE (Social Sciences and Humanities in Ionizing Radiation Research) network. He is a member of the central management team for the Belgian Society for Radiation Protection and, in 2017, edited Naturally Occurring Radioactive Materials in Construction (Elsevier).

• SECTION 1: Classification and Characterization of Radioactive Waste 1. Classification and General Guidelines of Evaluation Test and Performance Criteria for Low- and Intermediate-Level Waste Immobilization 2. Immobilization Processes Using Portland Cement Systems: Advantages and Disadvantages SECTION 2: Traditional Cementitious Matrices 3. Phosphate-Modified Calcium Aluminate Cement 4. Magnesium Silicate Cement SECTION 3: Alkali-Activated Cementitious Matrices 5. Evaluation of Radioactive Waste Immobilization Using Alkali-Activated Binders with the Help of Dynamic and Static Leaching Test 6. Alkali-Activated Cement – Mechanism of Radionuclides Immobilization 7. Immobilization of Radioactive Nitrate- and Borate-Containing Salt Concentrates in an Alkali-Activated Cementitious Matrix 8. Alkali-Activated Materials for Immobilization of Organic Radioactive Waste