NUWCEM 2018 ǀ 24 - 26 OCT. ǀ AVIGNON, FRANCE 

TOPICS

1 -  Methods of production of cement-waste forms

- 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

2 - Physico-chemical processes occurring in cement-waste forms at early age

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

3 - Emerging and alternative cementitious systems

- Low pH cements
- Calcium aluminate and sulfoaluminate cements
- Geopolymers
- Phosphate cements (magnesium, calcium…)

| Contacts

Scientific Program

Céline CAU DIT COUMES   

David LAMBERTIN 

General Coordination

Patricia HAMEL-BLOCH  

© SFEN Event

NEW

NEW

4 - Influence of internal factors on long-term properties of cement-waste packages

- Waste / cement / aggregate interactions

- Differed ettringite formation

- Effect of βγ and α irradiation: radiolytic gas production, stability of cement hydrates and admixtures

- Corrosion of metallic waste

- Gas evacuation

- Micro and macro-cracking



 

5 - Influence of external factors on long term properties of cement-waste packages and cement barriers

- Leaching by aggressive solutions (chloride, sulfate…), carbonation

- Effect of temperature

- 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

6 - Monitoring of cemented waste packages and cement barriers

- 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