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Meeting MS&T23: Materials Science & Technology
Symposium Ceramics for New Generation Nuclear Energy System Application
Presentation Title Development of Radiation Attenuating Geopolymer-particulate Composites
Author(s) Alex Fields, Jianxin Zhou, Ali Ozer, Angela Di Fulvio, Waltraud Kriven
On-Site Speaker (Planned) Alex Fields
Abstract Scope Geopolymers are hydrated, inorganic aluminosilicate polymers of the composition 1 M2O·1 Al2O3·4 SiO2·11-15 H2O with M = Na, K, or Cs. To develop a viscosity tunable, thixotropic radiation shielding solution, geopolymers were used in this study to accommodate filler phases with a high probability of interaction with ionizing radiation. The gamma-ray and neutron shielding abilities of tungsten and boron carbide dispersed in potassium-based geopolymers were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to explore changes in the bulk geopolymer, dispersant-matrix binding, and crystallinity before and after radiation. The shortening of the amorphous geopolymer XRD peak and surface changes indicative of water loss were observed after irradiation. The radiation shielding fractions for gamma rays, fast neutrons, and thermal neutrons were demonstrated to be higher or comparable to that of current high-density concrete.


A New Method for Measuring Refractory Corrosion of Ceramics in Glass
Advanced Characterization of Nuclear Fuels to Support Qualification of Nuclear Fuels
AI/ML-assisted Design of Phosphate Nuclear Waste Forms
Analysis of Radially Resolved Thermal Conductivity in High Burnup Mixed Oxide Fuel
Atomistic Understanding of Thermal Conductivity Degradation in Irradiated Oxide Fuels
Creep Predictions in UO2 by Atomistic to Meso-scale Simulations
Crucible-scale Corrosion Testing of Monofrax® K-3 Refractory in Contact with Glass Melts
Crystal Growth of Actinide Materials as Potential Nuclear Waste Forms
Decoding the Structural Descriptors Controlling Nepheline Crystallization in Borosilicate-based Nuclear Waste Glasses
Development of Radiation Attenuating Geopolymer-particulate Composites
Development Strategy for SiC/SiC Composite Accident Tolerant Fuel Cladding
Disordered Enthalpy-entropy Descriptor for High-entropy Ceramics Discovery
Engineered Ceramic Composites for Neutron Moderation and Shielding in Advanced Reactors
Evolution of the Chemical State in Molten Salt Reactors during Operation and Implications for Materials Behavior
Impact of Phonon Resonant Scattering on Thermal Conductivity of Uranium-doped ThO2
Interface Effect on the Distributions of Radiation Induced Defects
Investigating the Effects of Irradiation on Microstructure, Micromechanical and Thermal Properties of High Entropy Carbide Ceramics
Investigating the Radiation Response of Oxide Materials with Neutron Scattering
Iron-phosphate Glasses for the Immobilization of Dehalogenated Chloride-based Waste Salt
M-2: Synthesis of Uranium Nitride Nuclear Fuel
Metal-halide Perovskites as Innovative and Cost-effective Salt Waste Form
Metal Hydride Moderators: A Historical Perspective of Their Design and Implementation
Microstructure and Mechanical Properties of Ceramics in Y-Ti-O System
Modeling of Pressure-driven Inter-granular Fracture in High Burnup Structure UO2 during LOCA Using a Phase-field Approach
Modeling the Effect of Point Defect Scattering on the Thermal Conductivity of ThO2
Non-Equilibrium Ionic Transport in Oxides
Oxygen Vacancy Formation Energetics in MgO-based High Entropy Oxides from DFT and Experimental Validation
Phase Equilibria and Thermodynamics of Uranium Mononitride Fuel Undergoing Burn-Up in a Lead-cooled Reactor
Phonon Modal Analysis of Thermal Transport in ThO2 with Defects
Processing of High Entropy Metal Carbides: A New Class of Ultrahigh Temperature, Irradiation Resistant Ceramics
Proton Irradiation and Characterization of ThO2, UxTh1-xO2, CeO2, UO2 and Zr:UO2 Single Crystals
Scalable Manufacturing of Garnet Structured LLZO Ceramic Tubes With Applications in Next Generation Fusion Systems
Stability of Radiation−Induced Bixbyite Phase in δ−Sc4Hf3O12
Status and Outlook of Tristructural Isotropic Coated Particle Fuel Technology
Thermal Oxidation and Thermodynamics of Uranium Nitride and Uranium Carbide
Thermal Property Mapping of Surrogate TRISO Particles
Thermodynamic Assessment of Chromium and Nickel Corrosion in Molten Fluoride Salts
Uncertainty Quantification and Propagation of NaCl-KCl-MgCl2 Thermodynamic Functions for Molten Salt Applications
Welding Development of Cladding Materials for Ceramic Fuels

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