Sensitivity of various steel-fiber types to compressive behavior of ultra-high performance fiber-reinforced concretes

Author(s) : D.L. Nguyen, D.J. Kim
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: 45 - 52
Total Pages : 8
Language : English

Abstract: This research investigated the sensitivity of various steel fibre types to compressive behaviour of Ultra-high-performance fibre reinforced concretes (UHPFRCs) by experimental program. The same mortar matrix was used while four types of steel fibres were added with identical volume fraction (2%): twisted fibres (T), hooked fibres (H), long smooth fibres (LS) and hybrid fibres (HB) which includes 1% twisted blended 1% short smooth fibres. There was an important increase in compressive resistance of UHPFRCs compared with mortar matrix without fibres. The order of fibre-type sensitivity in terms of compressive strength and ultimate strain was achieved as follows: T > LS > HB > H. The compressive stress versus strain responses of UHPFRCs were virtually linear within their peak points but dispersed and brittle beyond the peaks.

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