QUANDO LA MATERIA INGANNA IL TEMPO

Il COR-TEN nel progetto sulla preesistenza

Giulia Favaretto1, Chiara Mariotti2, Andrea Ugolini3, Alessia Zampini4

1 Alma Mater Studiorum, UniBo, Dipartimento di Architettura, giulia.favaretto2@unibo.it

2 Alma Mater Studiorum, UniBo, Dipartimento di Architettura, chiara.mariotti7@unibo.it

3 Alma Mater Studiorum, UniBo, Dipartimento di Architettura, a.ugolini@unibo.it

4 Alma Mater Studiorum, UniBo, Dipartimento di Architettura, alessia.zampini2@unibo.it

ABSTRACT

COR-TEN is an American patent generally identifying a group of steel alloys, developed in order to improve the response to weathering exposure. Thanks to its substantial properties of CORrosion resistance and TENsile strength, to the reduced need for maintenance and, above all, to the aesthetic value of its surfaces able to establish consonant relationships between the ancient and the new, it is one of the most widespread materials in the project for the pre-existence.

Analysing the interaction with the environment, deepening the technical solutions adopted and gathering the underlying reasons, the essay aims at studying some realised projects closely, projects that can be considered smart interpretations of the contemporary addiction in ancient contexts where the weathering steel becomes a designing paradigm. On account of a series of interviews, the research aspires to understand how these interventions have been stratifying through the history.

Parole chiave/Key-words: COR-TEN, restoration, material, time, aesthetic value.