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http://dx.doi.org/10.1007/s40069-017-0193-8

Pull-Out Behaviour of Hooked End Steel Fibres Embedded in Ultra-high Performance Mortar with Various W/B Ratios  

Abdallah, Sadoon (Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London)
Fan, Mizi (Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London)
Zhou, Xiangming (Civil Engineering, College of Engineering, Design and Physical Sciences, Brunel University London)
Publication Information
International Journal of Concrete Structures and Materials / v.11, no.2, 2017 , pp. 301-313 More about this Journal
Abstract
This paper presents the fibre-matrix interfacial properties of hooked end steel fibres embedded in ultra-high performance mortars with various water/binder (W/B) ratios. The principle objective was to improve bond behaviour in terms of bond strength by reducing the (W/B) ratio to a minimum. Results show that a decrease in W/B ratio has a significant effect on the bond-slip behaviour of both types of 3D fibres, especially when the W/B ratio was reduced from 0.25 to 0.15. Furthermore, the optimization in maximizing pullout load and total pullout work is found to be more prominent for the 3D fibres with a larger diameter than for fibres with a smaller diameter. On the contrary, increasing the embedded length of the 3D fibres did not result in an improvement on the maximum pullout load, but increase in the total pullout work.
Keywords
pullout behaviour; bond mechanisms; water/binder ratio; hook geometry; embedment length and fibre-matrix interface;
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Times Cited By KSCI : 16  (Citation Analysis)
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