BOND STRENGTH OF REINFORCEMENT IN HIGH-PERFORMANCE CONCRETE: ROLE OF SILICA FUME, CASTING POSITION, AND SUPERPLASTICIZER DOSAGE. DISCUSSION

A discussion of a paper with the aforementioned title by B.S. Hamad, and M.S. Itani, published in this journal (Volume 95, Number 5, September-October 1998), is presented. The discussion analyzes the published test results and evaluates the effect of silica fume and superplasticizers on bond strength. The discusser shows that the addition of silica fume in the concrete mix does not have a negative effect on bond strength and contends that the opposite conclusion was obtained by the authors because of two problems: the concrete compressive strength of specimens without silica fume was smaller than that of specimens with silica fume; and the authors did not consider that the bond stress distribution influences the bond strength. The discusser believes that, instead of normalized loads, the absolute value of loads should be used to compare the beam stiffness.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Esfahani, M-R
• Publication Date: 1999-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 510-511
• Serial:
  • ACI Materials Journal
  • Volume: 96
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Casting; Compressive strength; High performance concrete; Reinforcing bars; Silica fume; Stiffness; Superplasticizers
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00767861
• Record Type: Publication
• Contract Numbers: CMS-9796326
• Files: TRIS
• Created Date: Aug 29 2001 12:00AM