NUWCEM 2022

– Performance requirements and implementation methods
– Formulation for various kinds of wastes (metallic wastes, ashes, spent sorbents including ion exchange resins and zeolites, coprecipitation sludges, evaporator concentrates and other saline solutions, organic-containing wastes)
– Formulation methodologies
– Processes involved: mixing device designs, packaging options ; engineering feasibility and implementation in real site

– Cement-waste interactions
– Factors influencing rheology, setting, hardening, hydration rate, heat production, pH and pore solution evolution
– Evolution of mineralogy and microstructure

– Low pH cements
– Calcium aluminate and sulfoaluminate cements
– Geopolymers
– Phosphate cements (magnesium, calcium…)
– NEW! Interactions between new binders and conventional construction materials

– Waste / cement / aggregate interactions
– Differed ettringite formation
– Effect of bg and a irradiation: radiolytic gas production, stability of cement hydrates and admixtures
– Corrosion of metallic waste
– Gas evacuation
– Micro and macro-cracking
– NEW! Chemo-mechanical modelling

– Leaching by aggressive solutions (chloride, sulfate…), carbonation
– Effect of temperature
– Redox state evolution
– Radionuclides retention
– Liquid, gas, and contaminant transport under unsaturated or saturated conditions
– Interactions with other cement barriers
– Modelling of long-term behavior – saturated versus unsaturated transport

NEW!
– Monitoring techniques, remote monitoring, potential of robotics for monitoring condition of waste packages and waste forms
– Methods for detecting and quantifying concrete contamination
– Methodology for service life extrapolation
– Methods for reworking non-compliant cement waste forms