4. Assumptions for sizing the recovery surface

4.1 Fundamental considerations

Reinforced concrete or prestressed concrete structural elements reinforced with a concrete facing of at least 40 mm thickness NF EN 1992-4 (2018), or at least 60 mm for bridge structures, can be dimensioned as "monolithic" elements if shear forces at the interface between the new and existing concrete are limited, i.e. if there is continuity of deformations over the height of the section.

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4.1.1 Principle and definition of the analytical model

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Assumptions for sizing the recovery surface

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page Behavior along a recovery surface (concrete-concrete interface)

Shear strength of resumption 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...