Complete characterisation of tensile properties of Ductal® UHPFRC according to the French recommendations

Title: Complete characterisation of tensile properties of Ductal® UHPFRC according to the French recommendations
Author(s): G. Chanvillard, S. Rigaud
Paper category : conference
Book title: International Workshop High Performance Fiber Reinforced Cement Composites
Editor(s): A. E. Naaman and H. W. Reinhardt
Print-ISBN: 2-912143-38-1
e-ISBN: 2912143799
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 21 - 34
Total Pages: 14
Nb references: 8
Language: English

Abstract: Ductal® is a range of ultra-high performance concrete (UHPFRC), co-operatively developed by BOUYGUES-LAFARGE-RHODIA. Ductalâ is a technological breakthrough offering compressive strength of 160 to 240 MPa and tensile strength of over 10 MPa, with true ductile behaviour. Nevertheless, a key question for using ultra-high performance concrete for building and structures is to have available design codes and characterisation methods for such UHPFRC. This paper synthesises the method for a complete characterisation of tensile properties of Ductal®. According to the new French Recommendations for UHPFRC, the characterisation is done in two steps. The first step deals with the limit of proportionality or strength to localise the first crack. Taking into account scale effect in flexure, the first-crack strength in direct tension is obtained. The second step deals with the post-crack resistance. Starting with three points bend tests on notched specimens, an inverse analysis allows to extract the tensile strength versus crack opening relationship. Finally, an analysis of the variability is presented and comparison of the previous approach with direct tensile tests confirms its validity.

Online publication: 2003-04-28
Publication type : abstract_only
Public price (Euros): 0.00