Experience with Self-Consolidating High-Performance Fiber-Reinforced Mortar and Concrete

This paper discusses how self-consolidating high performance fiber reinforced cementitious composites (SC-HPFRCC) combine the self-consolidating property of self-consolidating concrete (SCC) in their fresh state, with the strain-hardening and multiple cracking characteristics of high-performance fiber-reinforced cement composites (HPFRCC) in their hardened state. The paper introduces two different classes of SC-HPFRCC: concrete based and mortar based. They all contain 30 mm long steel fibers in volume fractions of 1.5% and 2%, and exhibit strain- hardening behavior in tension. These mixtures are highly flowable, non-segregating and can spread into place, fill the formwork, and encapsulate the reinforcing steel in typical concrete structures. Six concrete based SC-HPFRCC mixtures, with compressive strengths ranging from 35 to 66 MPa (5.1 to 9.6 ksi), were successfully developed by modifying SCC mixtures recommended in previous studies and using the available local materials. Spread diameter of the fresh concrete based SC-HPFRCC mixtures measured from the standard slump flow test was approximately 600 mm (23.6 in.). Strain-hardening characteristics of the hardened composites were ascertained from direct tensile tests. Three mortar based SC-HPFRCC mixtures with 1.5% steel fiber content were also developed and exhibited average compressive strengths of 38, 50 and 106 MPa (5.5, 7.2 and 15.3 ksi), respectively. Recent structural large scale laboratory applications (structural wall, coupling beams, panels etc.) made of SC-HFPRCC have demonstrated the applicability of these mixtures.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780870313981
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Liao, W-C
  • Chao, S-H
  • Naaman, A E
• Publication Date: 2010-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 79-94
• Monograph Title: Fiber-Reinforced Self-Consolidating Concrete: Research and Applications

Subject/Index Terms

• TRT Terms: Admixtures; Compressive strength; Concrete structures; Fiber reinforced concrete; High performance concrete; Mortar; Self compacting concrete; Steel fibers; Tensile strength
• Uncontrolled Terms: Fiber content
• Subject Areas: Bridges and other structures; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01352803
• Record Type: Publication
• ISBN: 9780870313981
• Report/Paper Numbers: SP-274-6
• Files: TRIS
• Created Date: Sep 28 2011 9:28AM