Speaker
Description
Geopolymers are promising materials applicable in nuclear industry. They have been tested for various applications like nuclear waste immobilisation, as a construction material, for concrete cracks reparation, etc. We have developed a synthetic route for production of versatile geopolymer material with application in a passive system of GEN IV reactor safety. Such material contains a geopolymer matrix based on alumino-silicates and a filler. The filler powder can be broadly selected according to the needs (Gd2O3 as neutron absorber, Al2O3 as refractory oxide, Fe2O3 as chemically active material, etc). We have characterised the products by various solid-state techniques (mechanical properties, electron microscopy, X-ray powder diffraction). Additionally, we have tested the radiation stability of the material under gamma radiation of 60Co source mimicking the condition around the reactor pit during the life time of the material.
