French Standards for Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC)
TOUTLEMONDE ; KRETZ ; GENEREUX ; RESPLENDINO ; PILLARD ; GUERINET ; ROUGEAU
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
TOUTLEMONDE ; KRETZ ; GENEREUX ; RESPLENDINO ; PILLARD ; GUERINET ; ROUGEAU
Résumé / Abstract
The French standard NF P18-470 related to UHPFRC specification, performance,
production and conformity, published in July 2016, is a self-supporting document with
distinct scope, however with the same outline as NF EN 206/CN, the French standard
for ordinary structural concrete consistent to the European standard. Appendices detail
test protocol adaptations as well as standardized methods associated to the
determination of relevant UHPFRC characteristics. It covers both structural and nonstructural
UHPFRC. The French standard NF P18-710, published in April 2016, stands
as a national complement to Eurocode 2 for the design of UHPFRC structures (both
buildings and bridges). It covers UHPFRC with metallic fibers and characteristic
compressive strength higher than 150 MPa. A third text (NF P18-451), to be finalized
for public enquiry early in 2017, will complement the standard for execution of
concrete structures, NF EN 13670/CN. Consistently, the common rules for precast
products (NF EN 13369) will be updated to introduce these UHPFRC standards.
Technically, these documents are based on the French AFGC recommendations on
UHPFRC (revised in 2013) and technical feedback of 20 years of UHPFRC projects
and realizations. However, significant additional precisions have been formally
provided for clarification and easier implementation in a contract frame, among others:
design to withstand fire and earthquakes, durability performance and design,
classification of the material (based on compressive strength, tensile constitutive law,
type of fibers ensuring sufficient ductility, possible thermal treatment, consistency at
the fresh state and possible improved durability indicators), as well as formwork
features and casting / post-casting operations requiring specific care in the case of
UHPFRC, and geometrical tolerances. Complying with these documents shall help
keeping the quality of UHPFRC realizations and promote their widened acceptability.
Editeur
Springer
