FLEXURAL PERFORMANCE OF HIGH STRENGTH CONCRETE CONTAINING STEEL FIBRES

  • Sholihin As’ad Universitas Sebelas Maret (UNS-Solo), Solo, Indonesia
  • Andreas Saxer University of Innsbruck, Innsbruck, Austria

Abstract

This paper presents the flexural performance behaviour of high strength concrete containing steel fibres. Some 150 mm x 150 mm x 600 mm prismatic specimens at 28 days of hardened steel fibre reinforced concrete (SFRC) made from high strength concrete with 0,35 of water cement ratio (w/c) containing 40, 60 and 80 kg/m3 of 60 mm and 35 mm end hooked steel fibres were tested using four point bending test apparatus.  The  test  refers  to  Austrian  Guidelines  for  fibre  reinforced  concrete,  where  the  flexural performance is expressed into the flexural strength and the equivalent flexural strength. The flexural
strength and the equivalent flexural strength represents the SFRC’s strength at first crack of concrete and the SFRC’s post crack residual strength at 0,5 mm to 3,00 mm of deflection respectively. To observe the effect of high strength concrete, samples made from normal strength concrete with 0.5 of w/c containing
the same fibre types and dosage were also tested as reference. The result shows that SFRC with high strength  concrete  records  higher  both  flexural  and  equivalent  flexural  strength  than  normal  strength concrete. However at low fibre dosage, the post crack SFRC residual strength or equivalent flexural
strength of SFRC with high strength concrete tend to be lower than normal strength concrete. The high tensile stress, that cracked the high strength concrete containing low fibre dosage, is unable to be resisted by small number of steel fibres. This is evidently indicated by some fibre fractures in SFRC cracked zone.

Published
2011-08-01
How to Cite
AS’AD, Sholihin; SAXER, Andreas. FLEXURAL PERFORMANCE OF HIGH STRENGTH CONCRETE CONTAINING STEEL FIBRES. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 030, aug. 2011. Available at: <http://proceeding.eacef.com/ojs/index.php/EACEF/article/view/113>. Date accessed: 19 may 2024.
Section
Group of Building Materials Engineering (Nanotechnology)