EFFECT OF ENTRAINED AIR ON CONCRETES MADE WITH SO-CALLED "SAND-GRAVEL" AGGREGATES

SAND-GRAVEL AGGREGATES OF 3/8-IN. MAXIMUM PARTICLE SIZE USED WITH NON-AIR-ENTRAINING CEMENT PRODUCE CONCRETES CONTAINING FROM 3 TO 4 PERCENT AIR. THE SAME MIXES MADE WITH AIR-ENTRAINING CEMENT AND THE SAND-GRAVEL AGGREGATES HAVE AIR CONTENTS FROM 8 TO 13 PERCENT. EFFECT OF THIS LARGER AMOUNT OF ENTRAINED AIR IS GIVEN IN TERMS OF TESTS OF FLEXURAL AND COMPRESSIVE STRENGTH, FREEZING AND THAWING RESISTANCE, AND LENGTH CHANGES IN VARYING STORAGE CONDITIONS. EFFECT OF "SWEETENING" THE SAND-GRAVEL BY ADDITION OF 30 PERCENT OF COARSER AGGREGATE IS NOTED. /PCA/

• Authors:
  • Klieger, P
• Publication Date: 0

Media Info

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

Subject/Index Terms

• TRT Terms: Air content; Air entraining cement; Coarse aggregates; Compressive strength; Concrete; Entrained air; Flexural strength; Freeze thaw durability; Sandy gravels
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213477
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 24
• Files: TRIS
• Created Date: May 25 1970 12:00AM