3. Behavior along a recovery surface (concrete-concrete interface)

3.1 State of the art

The behavior of an interface subjected to longitudinal shear stress can be described using shear-friction theory.

However, it should be noted that the term "shear-friction theory" is misleading, as it actually encompasses several other physical and mechanical phenomena.

This theory is based on the initial assumption that the mechanism for transmitting shear stresses at a bearing surface (concrete interface) subjected to external shear and compressive forces is provided exclusively by friction. As a general rule, a simple "sawtooth" model is used to illustrate the fundamentals of this approach (figure

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Behavior along a recovery surface (concrete-concrete interface)

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Assumptions for sizing the recovery surface

Bibliographical sources

(1) - FIB - Code modèle de la FIB pour les structures en béton - (2010).
(2) - BIRKELAND (P.W.), BIRKELAND (H.W) - Connections in precast concrete construction , - American Concrete Institute, Journal of the American...

Norms and standards

Characterization of pavement texture by use of surface profiles - Part 1: Determination of mean profile depth - EN ISO 13473-1 - 2019
Products and systems for the protection and repair of concrete structures. Test methods Measurement of bond strength by pull-off - EN 1542 - 1999
Design and requirements for construction works of post-installed shear connection for two concrete layers, EOTA - TR 066 - November...

Regulations

Arrêté du 22 octobre 2010 relative à la classification et aux règles de construction parasismique applicables aux bâtiments de la classe dite " à risque normal

Dimensionnement parasismique des éléments non structuraux du cadre bâti - Justification parasismique pour le bâtiment "à risque normal", Ministère de l'Écologie, du Développement durable et de l'Énergie and Ministère du Logement, de l'Égalité...