Numerical simulations and non-destructive measurements of fibre orientation on UHPFRC wind towers

Author(s) : P. Toussaint, H. Rouch, S. Dobrusky
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: 105 - 115
Total Pages : 11
Language : English

Abstract: The objective of this study was to test the capability of numerical tools to predict the orientation of fibres in various configurations of UHPFRC casting. A strong industrial challenge is to find the best casting configuration of very big windmill elements. Four different configurations were experimentally casted and tested in a reduced scale. Many samples were sawed in the tubes and their mechanical properties were characterized in both transverse and longitudinal directions. The orientation of fibres was measured on polished sections by optical methods, and also with a non-destructive magnetic device. Starting from rheological characterizations of the UHPFRC, and considering the exact geometry of the reduced scale elements which were poured, the free surface flow was simulated and the tensor orientation was fully described in some representative sampling locations. Conclusions are that the orientation trend is predicted by the numerical simulations and can be measured with the magnetic device.

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