Cementitious materials are essential elements in many nuclear facilities such as nuclear power plants or radioactive waste repositories. These materials are also frequently employed for waste immobilisation and encapsulation. More recently, alternative materials with cement replacements, such as recycled materials, supplementary cementitious materials or (non-nuclear) waste residues have found a more widespread use in these kind of applications.
Given the high requirements for materials durability in these application, it is of utmost importance to have a solid understanding of the mechanistic processes affecting this durability and of their effect on performance. Since many cementitious materials can be considered as heterogeneous, and are often chemically unstable with respect to their environment, understanding of these processes form a great challenge.
This Topical Day aims at bringing together students, scientists and professionals dealing with long-term concrete durability. The objectives are to give an overview of methods and views on these issues and to share experiences and future challenges in the understanding and assessment of long-term durability of cementitious materials in nuclear applications as well in any other application.