A new test method for fiber-reinforced concrete

Ronald F. Zollo, Carol D. Hays, Robert Zellers

Research output: Contribution to journalArticlepeer-review


It has long been recognized that the principal benefit gained by using fiber reinforcement in portland cement concrete is a conversion of the material from brittle to relatively ductile behavior. The apparent ductility, or toughness, is primarily related to the improved tensile strength of fiber-reinforced concrete (FRC) especially and even after significant matrix cracking has occurred. However, the methods used to measure tensile strength and toughness of FRC have been, at best, elaborate and controversial. A practical and much needed testing methodology for fiber-reinforced concrete has been developed and adopted as an ASTM standard. It was conceived from the need to have a test that is relatively simple and inexpensive to conduct and is yet capable of assessing the tensile strength of cracked FRC. The test method, ASTM C 1399, and an interlaboratory testing program conducted to help formulate a precision statement for the new methodology is discussed.

Original languageEnglish (US)
Pages (from-to)111-116
Number of pages6
JournalCement, Concrete and Aggregates
Issue number2
StatePublished - Dec 1999


  • Fiber concrete
  • Fiber-reinforced concrete
  • Flexural testing
  • Post-cracking strength
  • Residual strength

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)


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