SOME ENGINEERING PROPERTIES OF SLAG CONCRETE AS INFLUENCED BY MIX PROPORTIONING AND CURING

This paper presents a simple method to obtain a 50 MPa 28-day strength concrete having 50 and 65 % by weight cement replacements with slag having a relatively low specific surface. The method produces slag concrete with strengths comparable to ordinary portland cement concrete from 3 days onward. The compressive and flexural strengths and the elastic modulus of these two concretes as affected by curing conditions are then presented. Prolonged dry curing is shown to adversely affect tensile strength and elastic modulus, and to create internal microcracking, as identified by pulse velocity mearurements. High swelling strains at high slag replacement levels show the need for longer wet curing for such concretes. The results emphasize that even 7-day wet curing was inadequate for high levels of slag replacement, and that continued exposure to a drying environment can have adverse effects on the long-term durability of inadequately cured slag concrete.

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

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Swamy, R N
  • Bouikni, A
• Publication Date: 1990-5

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 210-220
• Serial:
  • ACI Materials Journal
  • Volume: 87
  • Issue Number: 3
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Compressive strength; Concrete; Concrete curing; Flexural strength; Microcracking; Mix design; Modulus of elasticity; Physical properties; Portland cement concrete; Strength of materials; Swelling
• Uncontrolled Terms: Concrete properties; Concrete strength
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00495267
• Record Type: Publication
• Report/Paper Numbers: Title No. 87-M23
• Files: TRIS
• Created Date: Jul 31 1990 12:00AM