COMPARATIVE EVALUATION OF STEEL MESH, STEEL FIBRE AND HIGH-PERFORMANCE POLYPROPYLENE FIBRE REINFORCED SHOTCRETE IN PANEL TEST

In this paper, experimental investigations were performed on steel mesh (SM), steel fiber (SF) and high-performance polypropylene fiber (HPPF), reinforced shotcrete (HPPFRS) panels in order to evaluate performance characteristics such as toughness, flexural ductility, energy absorption and load capacity. The panel tests, in accordance with European specification for sprayed concrete (EFNARC), were made on 18 prismatic specimens having the same mix designs and were cured for 28 days but reinforced with various fibers. In addition, the rebound characteristics of these mixes were determined to compare the actual in situ fiber contents. Test results show that all reinforcements, including HPPFs that are low-modulus fibers, greatly improved the flexural ductility, toughness, and load-carrying capacity of the brittle matrix. It was seen that there was a positive synergy effect between steel and polypropylene fiber in hybrid fiber usage from a performance point of view. According to results, it can be concluded that a hybrid polypropylene-SF can be used alternatively instead of SM and monosteel fiber as a reinforcement in shotcrete applications to get better efficiency in mechanical properties of composite.

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• Corporate Authors:

  Elsevier

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• Authors:
  • Cengiz, O
  • Turanli, L
• Publication Date: 2004-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 8 p.
• Serial:
  • Cement and Concrete Research
  • Volume: 34
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Composite materials; Concrete; Ductility; Fiber reinforced concrete; Flexural strength; Fracture mechanics; Panel studies; Polypropylene; Shotcrete; Sprays (Materials); Toughness
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00983074
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 9 2004 12:00AM