Deliverable 16.2: Updated State-of-the-art report & Summary of major conclusions from the MAGIC work package

The present report aims to consolidate all the key and noteworthy results achieved by the partners working over the past three years in the MAGIC work package (WP). It is the result of the analysis of five deliverables containing the entirety of the detailed scientific production of the WP. While MAGIC has been structured into tasks depending on the scale at which the chemo-mechanical ageing of cementitious materials in a geological disposal environment was studied, this report provides a different perspective. Indeed, it cross-references all the results from all tasks with a contextualization related to the life cycle to which the concretes will be exposed: from the operational phase to the long-term phase. Due to its structure, this report will allow the reader both to identify the initial objectives of MAGIC based on the initial state of the art provided at the beginning of the project and to quickly understand the studies conducted with a systematic and concise recall of the experimental or modelling conditions chosen and a synthetic description of the noteworthy results. For more details, the reader can simultaneously refer to the technical deliverables that helped create this synthesis and were provided by the tasks. This report concludes with a 6-page summary that highlights the added value in terms of knowledge development that the MAGIC WP has contributed to the understanding of chemo-mechanical ageing of cementitious materials in geological disposal conditions. This includes the development of knowledge on the chemo-mechanical ageing of concrete during the operational and long-term phases of disposal; the impact of microbial activity; the improvement of multi-scale modelling, particularly the chemo-mechanical modelling at the structural scale.