fib MC(2020) complementary guidance on concrete durability: Technical report

As soon as fib decided to move forward with a new Model Code, dealing with both new and existing structures, that is both the design of new structures and the various activities associated with the assessment, interventions upon and life-cycle management (LCM) of existing concrete structures, and designated as 'fib Model Code for Concrete Structures (2020)” (MC(2020)), it became clear that a chapter dealing with durability would be relevant. Particularly, durability aspects play quite an important role when dealing with existing structures. Within fib there is a technical Commission, dealing with durability of concrete structures. In this regard, the Commission 8 members, lead by Lionel Linger, and with strong support of Mouna Boumaaza, developed many contributions for the MC(2020). These contributions were eventually simplified into a set of procedures and guidelines. Accordingly, it was identified within Commission 8 that it would be important for those that will use MC(2020) in the future to have a technical background document. This document supports all the concrete durability aspects raised in MC(2020) and compiles the contributions from all the Commission members. It constitutes a fundamental piece for those who will apply MC(2020) in the future and may want to delve deep into the explanations. Personally, I would like to acknowledge all the members from Commission 8 who actively participated in development of the MC(2020), and later in this background document, and especially, to Lionel Linger and Mouna Boumaaza, for taking all the leadership. Indeed, it was very hard work compiling all technical aspects, but also covering the editorial work concerning this report. I also do hope that this document will be widely used in the future, by practitioners and researchers, and this will be an important contribution to the application of MC(2020).