Advances in the development of the first UHPFRC Recommendations in Spain: Material classification, design and characterization

Author(s) : J.A. Lopez, P. Serna, J. Navarro-Gregori
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 565 - 574
Total Pages : 10
Language : English

Abstract: With the aim to foster the use of UHPFRC in Spain, the Committee nº1 of the Scientific-Technical Spanish Association of Concrete (ACHE) created in November 2015 the task group 1.6 focused on the development of the first UHPFRC guidelines in Spain. This paper provides a summary of the major issues developed so far regarding of UHPFRC tensile classification, the conceptual design process and characterisation test setup for quality control.
According to the Spanish recommendations, tensile classification of UHPFRC depends on four tensile parameters that can be used to derive the constitutive stress-strain laws in tension proposed for SLS and ULS. These laws must be affected by fibre orientation coefficients to take into account real distribution of fibres in the structural element according to its geometry, fibre length and pouring system. Finally, a quality control programme on four-point bending tests must be carried out to assess that characteristic design tensile parameters are achieved. Standard test and methodology to derive these parameters from it are also described.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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