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ABSTRACT
An existing bridge was designed in order to provide a certain service. However, due to design or construction errors, ageing of its materials, aggressivity of traffic and accidental actions, the work can present disorders over-time, not ensure its service or present significant risks. It the must be repaired, reinforced or even replaced. This article is dedicated to the repair and protection techniques for the concrete and reinforcements. It deals at length with the restoration of concrete, structural reinforcement (addition of concrete), preservation and restoration of the passivity of the reinforcements and the protection of concrete.
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHORS
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Daniel POINEAU: Ingénieur divisionnaire des Travaux Publics de l'Etat – Former Technical Director of Sétra's Major Structures Division - Professor at École nationale des Travaux Publics de l'État, École spéciale des Travaux Publics and École supérieure des ingénieurs des Travaux de la construction - Consultant
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Jean-Armand CALGARO: Engineer General of Ponts et Chaussées - Permanent member of the Conseil général de l'Environnement et du Développement Durable (General Council for the Environment and Sustainable Development) - Professor at the Centre des Hautes Études de la Construction - This edition is an update of the article by Roger LACROIX and Jean-Armand CALGARO entitled Projet de renforcement ou de réparation d'un pont, published in 1999.
INTRODUCTION
This dossier follows on from the articles on "Pathology and assessment of existing bridges" (
An existing bridge was designed to provide a certain service. However, due to design and/or execution errors, ageing materials, environmental attacks, aggressive traffic, accidental actions, etc., the bridge may be in disrepair and no longer provide the intended service. It is therefore necessary to repair or even replace it.
In some cases, the load-bearing capacity and geometry of an existing bridge are no longer adapted to the new needs arising from increased traffic and loads. In most cases, this means reinforcing the structure.
In the 1
er
part of this theme,
Here, we focus on repair and protection techniques for concrete and reinforcement.
The following articles deal specifically with repair and reinforcement methods:
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Pathologies and building rehabilitation
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Bridge reinforcement or repair project
Techniques for repairing concrete and adding concrete
Bibliography
Articles and conference proceedings
Websites
• ACQPA Association pour la Certification et la Qualification en Peinture Anticorrosion (Association for Certification and Qualification in Anticorrosive Painting)
• AFCAB Association française de certification des armatures de béton (French association for the certification of concrete reinforcing bars)...
Standards and norms
- Ensemble des Eurocodes : calcul des structures en béton armé et précontraint, métalliques et mixtes (voir le site de l'AFNOR). - -
- Products and systems for the protection and repair of concrete structures – Definitions, requirements, quality control and conformity assessment – Part 1: Definitions. - NF EN 1504-1 -
- Products and systems for the protection and repair of concrete structures – Definitions,...
Regulations
Title II of fascicule 61 of the CPC: Design, calculation and testing of engineering structures (1971).
Titre I du fascicule 67 du CCTG: Étanchéité des ponts-routes support en béton de ciment (1985).
Titre I section II du Fascicule 62 du CCTG : Règles techniques de conception et de calcul des ouvrages et constructions en béton précontraint suivant la méthode des états limites...
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