Fire behaviour of post-installed steel rebars: full-scale experimentation on a cantilever concrete slab
LAHOUAR ; PINOTEAU ; CARON ; FORET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
LAHOUAR ; PINOTEAU ; CARON ; FORET
Résumé / Abstract
Post-installed rebars offer today new solutions to build more efficiently and sustainably thanks to their high mechanical properties at ambient temperature. However, the absence of a fire design method and the lack of regulations make their usage insecure in case of fire. A fire design model based on thermal calculations and on the knowledge of the variation of the bond resistance depending on temperature is presented and validated in this paper. Full-scale validation fire test carried out on a cantilever concrete slab revealed the presence of physical and thermal phenomena affecting the fire resistance of post-installed rebars and responsible for the decay in their bearing capacity.
