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Influence of variation of microfibre types and filler on workability, mechanical characteristics and some durability properties of fibre reinforced high strength self-compacting concrete



Author(s): M. Rezvani, S. Palecki, D.C. Lupascu
Paper category: Conference
Book title: 8th RILEM International Symposium on Fiber Reinforced Concrete: challenges and opportunities (BEFIB 2012)
Editor(s): Joaquim A.O. Barros
Print ISBN: 978-2-35158-132-2
e-ISBN: 978-2-35158-133-9
Publisher: RILEM Publications SARL
Pages: 822 - 834
Total Pages: 12
Language: English


Abstract: 
Fibre reinforced self-compacting concrete (FRSCC) shows improvements of several mechanical properties in both the fresh and hardened states. While the structural and mechanical characteristics of SCC have been investigated in detail, durability data are still scarce, especially with regard to material variation. On top of this, FRSCC can be more vulnerable against harsh climate and environmental conditions due to the high amount of paste volume rather than normal concrete. In this study, SCC mixes with different types of fibres (steel, polypropylene) and filler as well as variation of fibre geometry have been analysed with respect to several properties such as workability, mechanical performances and durability. The durability of FRSCC has been evaluated via several tests such as frost salt resistance, acid attack resistance, chloride ion diffusion coefficient, and capillary absorption. The results show that the durability of SCC is highly affected by fibre existence and fibre type. Improvement in frost and acid resistance was observed when SCC mixtures were combined with both steel and polypropylene (PP) fibres, especially when PP fibres with the length of 6mm were used. Also, it was observed that when the same superplasticizer and water contents were used, a decrease in filler content could improve both frost and acid resistance of SCCs.


Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00