Publications

Pro042

Passing ability of self-compacting fibre reinforced concrete



Title: Passing ability of self-compacting fibre reinforced concrete
Author(s): S. Grünewald
Paper category : conference
Book title: SCC'2005-China: 1st International Symposium on Design, Performance and Use of Self-Consolidating Concrete
Editor(s): Zhiwu Yu, Caijun Shi, Kamal Henri Khayat and Youjun Xie
Print-ISBN: 2-912143-61-6
e-ISBN: 2912143624
Publisher: RILEM Publications SARL
Publication year: 2005
Pages: 293 - 300
Total Pages: 8
Nb references: 6
Language: English


Abstract: The size of the components of self-compacting fibre reinforced concrete (SCFRC) relative to the bar spacing affects the passing ability. To be most effective in the hardened state, fibres have to be larger than the aggregates. Usually, the optimum fibre length is 2-4 times that of the maximum aggregate size. This aspect has to be taken into account when designing structural elements cast with self-compacting fibre reinforced concrete (SCFRC). In an experimental study the effect of the mixture composition, the type and the content of the steel fibres on the minimum bar spacing required to counteract blocking was studied. The J-ring in combination with the slump flow test was applied to determine the bar spacing at which blocking occurs. Based on the results, a model is developed that allows predicting the minimum bar spacing for SCFRC. It takes into account the content and the characteristics of the steel fibres and the aggregates.


Online publication: 2005-04-11
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143624.030