PROPERTIES AND FLEXURAL PERFORMANCE OF STEEL FIBER REINFORCED REFRACTORY CONCRETES. FIBRE REINFORCED CEMENTS AND CONCRETES: RECENT DEVELOPMENTS. PROCEEDINGS OF AN INTERNATIONAL CONFERENCE HELD AT THE UNIVERSITY OF WALES, COLLEGE OF CARDIFF, SCHOOL OF ENGINEERING, UNITED KINGDOM, SEPTEMBER 18-20, 1989

This paper presents the results of an investigation carried out to determine the flexural behavior, including first crack strength, modulus of rupture, the load deflection, the post-crack deformation characteristics, the post-crack load drop, and the toughness indexes of a refractory concrete reinforced with stainless steel fiber to 0.5%, 1.0%, and 1.5% by volume. Properties of fresh concrete, and elastic and mechanical properties of hardened concretes are also presented. Based on laboratory prepared test specimens, fiber reinforced refractory concrete was workable even at high fiber concentrations (1.5% by volume). There was no balling or tangling of fibers during mixing and placing. The addition of fibers improved the ductility and the post-crack energy absorption capacity. There was no significant change in compressive strength, static modulus and pulse velocity. The static flexural strengths increased 4.9%, 6.9%, and 39% when reinforced with 0.5%, 1.0%, and 1.5% steel fiber by volume, respectively. The postcrack load drops expressed as a percentage of the corresponding maximum loads decreased from 45.2% to 15.6% as the fiber contents was increased from 0.5% to 1.5% by volume. The first crack toughness increased from 17.48 in-lb (0.2 kg-m) to 32.37 in-lb (0.37 kg-m) with the addition of steel fiber to 1.5% by volume.(A) For the covering abstract of the conference see IRRD 827953.

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  • Corporate Authors:

    Elsevier Science Publishers

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  • Authors:
    • Shivaraj, S K
    • Ramakushnan, V
    • Wu, G Y
  • Publication Date: 1989

Language

  • English

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Filing Info

  • Accession Number: 00604717
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-415-7
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM