Introducing a New shape of Steel Fibres and Studying its Effect on the Mechanical Properties of Concrete. | ||||
The International Conference on Civil and Architecture Engineering | ||||
Article 10, Volume 6, 6th International Conference on Civil and Architecture Engineering, May 2006, Page 194-200 PDF (2.03 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/iccae.2006.45736 | ||||
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Authors | ||||
M. Hassoun1; A. Aggour2; E. Eltehawy2; N. Amer2 | ||||
1Syrian Armed Forces. | ||||
2Egyptian Armed Forces. | ||||
Abstract | ||||
The marked brittleness with low tensile strength of plain concrete can be overcome by the addition of steel fibres (SF). This paper investigates the mechanical properties of steel fibre reinforced concrete (SFRC) and spiral steel fibre reinforced concrete (SSFRC). The properties included compressive and splitting tensile strength, modulus of rupture, and toughness index. The steel fibres were hook-ended shape with aspect ratio (l/d=50). The introduced shape was spiral steel fibres (SSF) with diameter of spiral=1.5 cm. The two shapes of steel fibres were added at the volume fraction of 0.5%, 1.0%,2.0%, and 3.0%. All the mechanica1 properties of SFRC enhanced up to 2.0% volume fraction of fibers, whereas the mechanical properties of SSFRC enhanced up to 3.0% volume fraction. The compressive strength of SFRC and SSFRC enhanced by 43.4% and 65% respectively relative to plain concrete. The splitting tensile strength of SFRC and SSFRC enhanced by 52.6% and 147% respectively relative to plain concrete. The modulus of rupture of SFRC and SSPRC enhanced by 137.5%, and 62.5% respectively relative to plain concrete. The toughness index of SPRC improved with increasing the fraction up to 2.0%. The indices I5, I10, and I20 registered values of 10.7, 20.5, and 35.1 at 2.0% fraction. The toughness index of SSFRC improved with increasing the fraction up to 3.0%. The indices I5, I10, and I20 registered values of 9.76, 18.78, and 35.8, respectively, at 3.0% volume fraction. | ||||
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