Properties of Wet-Mixed Fiber Reinforced Shotcrete and Fiber Reinforced Concrete With Similar Composition

Fiber reinforced shotcrete (FRS) is used in slope protection, tunnel linings, as well as structural repair in rehabilitation. FRS is used as an alternative to using steel mesh to prevent cracking of the shotcrete layer. This article reports on a study of the properties of wet-mixed FRS and fiber reinforced concrete (FRC) with similar composition; properties studied include compressive strength, flexural behavior, permeability, and shrinkage behavior. FRS and FRC are found to exhibit similar shrinkage behavior. The flexural strength of FRS is similar to that of FRC, but the residual loads in the postpeak regimen can be significantly lower. The authors conclude that in practical applications of shotcrete, resistance to shrinkage cracking (with strain due to restrained shrinkage well beyond the strain at flexural cracking) and waterproofing are often major concerns. The authors recommend that an FRC composition with higher residual loads and much lower permeability than the required values should be employed.

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  • Authors:
    • Leung, Christopher KY
    • Lai, Raymond
    • Lee, Augustus YF
  • Publication Date: 2005-4

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01000634
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 3 2005 7:23AM