Skip to main content
Aller à la page d’accueil de la Commission européenne (s’ouvre dans une nouvelle fenêtre)
français fr
CORDIS - Résultats de la recherche de l’UE
CORDIS
Contenu archivé le 2024-04-16

THE DEVELOPMENT OF STANDARDISED PERFORMANCE TESTS AND CRITERIA FOR CONCRETE REPAIR SYSTEMS

Objectif


The project was completed largely as planned, but the main goals have only been partially achieved. While it was possible to induce and accelerate deterioration mechanisms which are similar to those seen in practice and to rank repair systems in order of performance, it has often been impossible to quantify the acceleration factor with an acceptable degree of reliability.

Critical features/properties of the repair systems have been identified, however, and how they interact to influence performance. No single property is likely to give a true indication of performance, whether this is related to maintenance of adhesion, protection of reinforcement of structural performance, but relative performance factors can be derived from functions which relate two or more properties.

A methodology for testing has also been developed which is related for the exposure classes given in prEN206 for concrete structures. Essential and desirable tests are identified and the way in which results should be interpreted, eg, by considering combinations of properties, is defined for some exposure classes. Within this methodology, it is recommended that separate tests are used to measure the effects of the repair application and the potential performance under ideal placing conditions. Trying to combine the two has been found to make interpretation of results very difficult.

The substantial volume of data obtained in the six repair systems used in the evaluation has resulted in a much better understanding of how repairs work and thus led to recommendations for the future development of repair systems.

Thus, while the project goals were not fully achieved, substantial benefit has been obtained from this programme, and some of the specific test methods have been submitted to the appropriate CEN standards committees.
The repair of concrete damaged by reinforcement corrosion is a worldwide problem costing with estimated costs of $10 billion annually. A large proportion of these repairs are ineffective and fail, requiring further repair.

To be durable a repair must adhere to the substrate concrete and protect the underlying steel against corrosion. It must therefore have physical and chemical properties consistent with the design and use of the structure it is applied to.

No co-ordinated standards and methods exist to guide engineers and structure owners in selection and specification of repair materials.

This programme will compare the performance of repairs to existing structures; test repairs which have been exposed for 10 years; repairs exposed to accelerated weathering regimes; large scale, repaired members subjected to structural testing and accelerated weathering.

The results of these tests will enable direct comparison of natural and accelerated testing. The results of this comparison will assist with formal standardisation of performance tests and criteria.

Champ scientifique (EuroSciVoc)

CORDIS classe les projets avec EuroSciVoc, une taxonomie multilingue des domaines scientifiques, grâce à un processus semi-automatique basé sur des techniques TLN. Voir: Le vocabulaire scientifique européen.

Ce projet n'a pas encore été classé par EuroSciVoc.
Proposez les domaines scientifiques qui vous semblent les plus pertinents et aidez-nous à améliorer notre service de classification.

Vous devez vous identifier ou vous inscrire pour utiliser cette fonction

Programme(s)

Programmes de financement pluriannuels qui définissent les priorités de l’UE en matière de recherche et d’innovation.

Thème(s)

Les appels à propositions sont divisés en thèmes. Un thème définit un sujet ou un domaine spécifique dans le cadre duquel les candidats peuvent soumettre des propositions. La description d’un thème comprend sa portée spécifique et l’impact attendu du projet financé.

Données non disponibles

Appel à propositions

Procédure par laquelle les candidats sont invités à soumettre des propositions de projet en vue de bénéficier d’un financement de l’UE.

Données non disponibles

Régime de financement

Régime de financement (ou «type d’action») à l’intérieur d’un programme présentant des caractéristiques communes. Le régime de financement précise le champ d’application de ce qui est financé, le taux de remboursement, les critères d’évaluation spécifiques pour bénéficier du financement et les formes simplifiées de couverture des coûts, telles que les montants forfaitaires.

Données non disponibles

Coordinateur

Taywood Engineering Ltd
Contribution de l’UE
Aucune donnée
Adresse
Taywood House 345 Ruislip Road
UB1 2QX Southall
Royaume-Uni

Voir sur la carte

Coût total

Les coûts totaux encourus par l’organisation concernée pour participer au projet, y compris les coûts directs et indirects. Ce montant est un sous-ensemble du budget global du projet.

Aucune donnée

Participants (6)

Mon livret 0 0