DISCUSSION OF VOID SPACING AS A BASIS FOR PRODUCING AIR- ENTRAINED CONCRETE

THE DISCUSSION CENTERS AROUND THE USE OF A SPACING FACTOR OF 0.01 IN. AS A SAFE LIMIT. BUREAU OF RECLAMATION TESTS INDICATE THAT A LIMIT LOWER THAN 0.01 IN. IS NECESSARY. THE AUTHOR'S CLOSURE CONTRASTS THE EXPERIMENTAL TECHNIQUES USED, AS REGARDS RATE OF COOLING AND DEGREE OF SATURATION. THE 0.01 IN. LIMIT WAS SET ON THE BASIS OF FIELD EXPOSURE CONDITIONS RATHER THAN THOSE OF ACCELERATED LABORATORY TESTS. /PCA/

• Authors:
  • Backstrom, J E
  • Burrows, R W
  • Wolkodoff, V E
  • POWERS, T C
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Air entrained concrete; Cooling; Percent saturation; Spacing; Void ratios
• Old TRIS Terms: Void
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213499
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 49 A
• Files: TRIS
• Created Date: May 25 1970 12:00AM