The Alkali-Silica Reaction (ASR) is a deleterious concrete chemical reaction that has been studied a lot since its discovery in 1940. The reaction produces a highly hygroscopic silica gel that swells into the pores of concrete, resulting in the critical decrease of the mechanical performances of the affected structures. Some methods have been investigated to limit expansion under a certain limit, among them lithium mitigation. However, the mechanisms are not really understood yet and determining the right amount of lithium is still arduous. An attempt for a method in coherence with experience is presented in this study, using the chemo-mechanical model of Larive and curve-fitting. The results provide accuracy to experimental measurements from several protocols, and call for further research.
Dans cette société du face-à-face qu’est la société lyonnaise d’Ancien Régime, les arrangements à l’amiable et les transactions parallèles demeurent un mode de régulation interne qui contribue à l’équilibre des maisonnées. Étudier ces tentatives d’accommodement à partir des sources judiciaires peut sembler paradoxal puisqu’elles recouvrent par définition des pratiques qui se situent en marge de la justice officielle. Les procédures engagées dans la seconde moitié du xviiie siècle devant les tribunaux royaux de Lyon renferment pourtant de nombreuses indications qui éclairent notre connaissance de cette justice parallèle. Leur examen permet notamment de dresser une typologie des conflits réglés à l’amiable, d’établir le profil des arbitres et des médiateurs et d’observer les formes et les modalités des accords survenus entre les parties adverses. In Lyon society under the Old Regime, settling a dispute by mutual agreement through arbitration was a mechanism which contributed to creating household equilibrium. It may appear paradoxical to analyse these attempts at agreement by using judicial sources because these practices took place by definition on the margins of official justice. However, the proceedings brought to the royal courts contain cases which can enrich our understanding of this form of parallel transaction. Through an analysis of trial records, this article seeks to draw up a typology of the conflicts settled by mutual agreement, to establish a portrait of the mediators, to describe the ways in which the parties came to an agreement and the forms of agreement reached
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