LABORATORY EVALUATION OF E.C. LEVY SLAG AS CONCRETE COARSE AGGREGATE

The objective of this test programme was to compare the performance of the "Slag Aggregate" concrete (test mix) with a laboratory standard concrete (control mix). The variables were: (a) A 3000 psi class concrete with 6 plus or minus 1% and 8 plus or minus 1% air content; and (b) A 5000 psi class concrete with 7 plus or minus 1% air content. The evaluation tests to be carried out were: (a) Compressive strength, (b) Resistance to freezing and thawing in the presence of deicing salt, (c) Drying shrinkage, (d) Resistance to rapid freezing and thawing in water. The strength of the 3000 psi class test concrete was lower than that of the corresponding control concrete. However the strength of the test concrete was adequate for a 3000 psi class concrete. The 3000 psi class test concrete with the normal air content (6.5%) had inadequate resistance to salt scaling. Adequate salt scaling resistance was obtained with the 3000 psi class test concrete containing 8.7% air and the 5000 psi class test concrete with 7.0% air content. The percentage shrinkage of the test concrete specimens was normal and comparable to that of the control specimens. It is therefore recommended that the E. C. Levy slag may be approved for use as concrete coarse aggregate in all classes of concrete provided that the air content of the concrete is maintained at 7-1/2 plus or minus 1-1/2%. (Author)

• Corporate Authors:

  Ontario Ministry of Transportation & Communic, Can

  Engineering Materials Office, 1201 Wilson Avenue
  Downsview, ONo M3M 1J8,   Canada 
• Authors:
  • Mukherjee, P K
• Publication Date: 1977-3

Media Info

• Features: Figures; References; Tables;
• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Air content; Compression tests; Concrete aggregates; Deicing chemicals; Drying; Freeze thaw tests; Laboratory tests; Shrinkage; Slag coarse aggregates
• Uncontrolled Terms: Scaling
• Old TRIS Terms: Compressive strength tests; Resistance
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00335530
• Record Type: Publication
• Report/Paper Numbers: EM-4
• Files: TRIS
• Created Date: Nov 23 1981 12:00AM