Influence of Fibre Type and Fibre Volume Fraction on Dynamic Properties of Slurry Infiltrated Fibre Concrete

Abstract:

The effect of fibre type and fibre amount on physico-mechanical properties of slurry infiltrated fibre concrete (SIFCON) at both quasi-static and dynamic load was evaluated experimentally. SIFCON is a special type of cement-based composite with high fibre volume fraction, extremely strong and ductile. Test specimens were prepared with 7 types of steel fibres (with different shape and mechanical parameters) in four volume fractions (7.5-15 vol. %). High performance fibre-reinforced concrete (HPFRC) has also been cast and tested for comparison purposes. The impact test has been carried out by using an in-house manufactured impact testing machine based on drop test principle. The test results revealed that SIFCON slab with 15 vol. % fibre content exhibits superior energy-absorption characteristics when compared to other slab specimens. Diameter of the fibres plays an important role for both strength and energy absorption capacity of SIFCON - using of low-diameter fibres with higher aspect ratio leads to the best results.

• Periodical: Materials Science Forum (Volume 865)
• Pages: 135-140
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.865.135
• Online since: August 2016
• Authors: Martina Drdlová*, Radek Řídký, René Čechmánek
• Keywords: Drop Test, Energy Absorption, Impact Loading, SIFCON = Slurry Infiltrated Fibre Concrete, Steel Fibre

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