Towards the evaluation of the concrete indicators for the monitoring of its degradations in laboratory and on structures

This research work deals with the assessment of concrete durability indicators as well as the monitoring and prediction of the evolution of physicochemical degradations, by destructive or non destructive methods. A first part is devoted to the structure durability towards the degradation by carbonation coupled with drying according to a performance approach. Laboratory tests are developed and a model is built. A diagnosis and a first prognosis concerning the progression of the carbonation of a concrete bridge deck highlight this approach. The purpose of the second part is the transfer of the performance approach on the non destructive evaluation of the durability properties and the degradation of concrete. Empirical relations between the non destructive results and some performance indicators are established in laboratory and then used for the diagnosis of the structure condition. The study of the physics of the propagation waves in the partially saturated concrete makes it possible to proceed to the inversion of the results and to obtain the indicators. The perspectives of this research intend to determine the water content gradients and the ingress fronts. Then, the prediction models of the residual service life of reinforced and prestressed concrete structures should be adapted to the non-destructive methods.

Language

  • French

Media Info

  • Media Type: Print
  • Pagination: 166p, bibliogr., fig., photos

Subject/Index Terms

Filing Info

  • Accession Number: 01497569
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • ISBN: 978-2-7208-2601-6
  • Files: ITRD
  • Created Date: Nov 7 2013 11:45AM