Sprayed UHPC with glass fibres for 3D panels

Author(s) : S. Bernardi, L. Trucy
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: 145 - 153
Total Pages : 9
Language : English

Abstract: Glass Fibre Reinforced Concrete (GFRC) has been developed over the last 50 years into the material it is today and mostly used as a cladding material. The spraying technique is used by many precasters because it allows them to create lightweight elements without the need for heavy shuttering, specifically when the geometry is complex. Nevertheless, the mechanical properties of GFRC have remained relatively low, even with the recent use of new types of admixtures. The weak point of GFRC remains the loss of ductility with time (“aging effect”), especially because of the anchorage degradation of glass fibres. To address this problem, an UHPC (Ultra High Performance Concrete) matrix was developed specifically to make it sprayable with the processes currently used in the GFRC industry. The main challenge has been to get the right rheology (yield stress and viscosity) by maintaining the performances of the UHPC in term of strength and durability.

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