Derivation of constitutive law for UHPFRC using DIC system

Author(s) : T. Mészöly, N. Randl
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: 221 - 230
Total Pages : 10
Language : English

Abstract: An accurate constitutive law for ultra-high performance fibre-reinforced concrete (UHPFRC) is necessary to model or design structures using this material. The present study is based on large sets of experimental tests (compression tests, modulus of elasticity tests, splitting tensile tests, uniaxial tensile tests and flexural tests) to derive full constitutive laws of different UHPFRC recipes with special interest on the tensile behaviour and the effect of the fibres. By using a Digital Image Correlation (DIC) system it is possible to directly derive the surface deformations in any point or the crack opening of every single crack. In the frame of this study a number of flexural tests provided with traditional and with DIC measurement system were performed. An in-depth comparison of all measurement results was performed and the tensile behaviour of the used UHPFRC was analysed. The applicability of the DIC recordings to the evaluation procedures defined in existing guidelines which rely on traditional measurement methods is investigated and presented.

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

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