FLEXURAL FATIGUE STRENGTH, ENDURANCE LIMIT, AND IMPACT STRENGTH OF FIBER REINFORCED CONCRETES

In many applications, particularly in pavements, bridge deck overlays, and offshore structures, the flexural fatigue strength and endurance limit are important design parameters because these structures are designed on the basis of fatigue load cycles. This paper presents the results of an extensive experimental investigation to determine the behavior and performance characteristics of the most commonly used fiber reinforced concretes (FRC) subjected to fatigue loading. A comparative evaluation of fatigue properties is presented for concretes with and without four types of fibers (hooked-end steel, straight steel, corrugated steel, and polypropylene) at two different quantities (0.5 and 1.0% by volume), using the same basic mix proportions for all concretes. The test program involved the determination of fresh concrete properties, including slump, vebe time, inverted cone time, air content, unit weight, and concrete temperature; and the determination of hardened concrete properties, including flexural fatigue strength, endurance limit, and impact strength. The addition of the four types of fibers caused a considerable increase in the flexural fatigue strength and the endurance limit for 4 million cycles, with the hooked-end steel fiber providing the highest improvement (143%) and the straight steel and polypropylene fibers providing the least. The impact strength was increased substantially by the addition of all four types of fibers, with straight steel fiber producing the lowest increase.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1989/1226/1226-003.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=FLEXURAL+FATIGUE+STRENGTH%2C+ENDURANCE+LIMIT%2C+AND+IMPACT+STRENGTH+OF+FIBER+REINFORCED+CONCRETES&author=V.+Ramakrishnan&author=G.+Wu&author=G.+Hosalli&publication_year=1989
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1226, International Symposium on Recent Developments in Concrete Fiber Composites. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Ramakrishnan, V
  • Wu, George Y
  • Hosalli, G
• Conference:
  • International Symposium on Recent Developments in Concrete Fiber Composites, 1989, Washington, DC, USA
• Publication Date: 1989

Media Info

• Features: References; Tables;
• Pagination: p. 17-24
• Monograph Title: International symposium on recent developments in concrete fiber composites
• Serial:
  • Transportation Research Record
  • Issue Number: 1226
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Concrete hardening; Durability tests; Fatigue strength; Fiber reinforced concrete; Fresh concrete; Laboratory tests; Polypropylene; Shock resistance; Steel fibers
• Uncontrolled Terms: Hardened concrete; Impact strength
• Old TRIS Terms: Endurance limit; Test results
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00495049
• Record Type: Publication
• ISBN: 0309049539
• Files: TRIS, TRB
• Created Date: Jun 30 1990 12:00AM