Overview
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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Bridge reinforcement or repair project -repair, protection of the concrete and reinforcements
Techniques for repairing concrete and adding concrete
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"Pathologies and building rehabilitation"
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51 articles
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Updated and enriched with articles validated by our scientific committees
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