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1. Adding forces through additional prestressing reinforcement and/or imposed deformations
1.1 Context
Prestressing is the application of forces of known intensity, at well-defined points and in well-defined directions, capable of opposing the forces generating the disorders. It is said to be "additional" when applied to existing structures to restore or increase their load-bearing capacity or extend their service life.
Additional prestressing is generally external. Only in the case of short or very short prestressings (active stirrups), or prestressings designed from the outset to be installed in specific recesses, can additional prestressing be placed inside the concrete itself. As a general rule, its application requires prior treatment of any cracks by injection with a rigid product, as it cannot close cracks on its own....
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Adding forces through additional prestressing reinforcement and/or imposed deformations
Adding passive reinforcement
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 French Association for the Certification of Concrete Reinforcements
...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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