ULTIMATE STRENGTH OF REINFORCED LIGHTWEIGHT FIBROUS CONCRETE BEAMS. 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

A research program was conducted with the aim of studying the flexural behavior and ultimate strength of reinforced structural lightweight concrete beams containing a combination of steel reinforcing bars and a specific type of fibers, steel or polypropylene fibers. For this purpose, sixteen beams were cast and tested up to failure under two concentrated loads placed at the third points of spans. All beams were made of cellular lightweight concrete using preformed foam. The densities of the lightweight concrete varied between 80 and 110 lb per cubic foot (1280 and 1760 Kg/m3). All beams were of the same size and reinforced with the same number and size of deformed steel bars. The main variables were the densities and the type of fibers used in the concrete mix. From test results, a procedure is developed to determine the ultimate strength of reinforced lightweight fibrous concrete. The procedure is based on the ACI Code taking into consideration the increase in the ultimate strength of the concrete section due to the presence of fibers. The analysis of the concrete beams shows good correlation between predicted ultimate strength and experimental results.(A) For the covering abstract of the conference see IRRD 827953.

  • Availability:
  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Hassoun, M N
    • Behdad, H
    • Sawalma, A
  • Publication Date: 1989

Language

  • English

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Filing Info

  • Accession Number: 00604714
  • 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