OBSERVATIONS ON THE RESISTANCE OF CONCRETE TO FREEZING AND THAWING

GENERAL CONCLUSIONS ARE PRESENTED ON THE SUBJECT OF FREEZE-THAW RESISTANCE OF CONCRETE. THE FINENESS AND COMPOSITION OF THE CEMENT HAVE NO PARTICULAR EFFECT ON FREEZE-THAW RESISTANCE. THE PRIMARY FUNCTION OF ENTRAINED AIR IS TO PROTECT THE HARDENED CEMENT PASTE FROM DESTRUCTIVE PRESSURE ARISING FROM FREEZING OF WATER THEREIN. THE USE OF A WATER-CEMENT RATIO OF 0.4 MIGHT BE A POSSIBLE ALTERNATE TO ENTRAINED AIR. DISCUSSION BY BACKSTROM AND BURROWS OF CONCRETES CONTAINING A "HIGHLY FELDSPATHIC NATURAL AGGREGATE WITH REACTIVE CONSTITUENTS" SHOWS THAT A REDUCTION IN THE FINENESS AND THE ALKALI CONTENT OF THE CEMENT SIGNIFICANTLY INCREASES THE FROST RESISTANCE OF AIR-ENTRAINED CONCRETE. /PCA/

• Authors:
  • WOODS, H
  • Backstrom, J E
  • Burrows, R W
• Publication Date: 0

Media Info

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

Subject/Index Terms

• TRT Terms: Alkali; Cement; Concrete; Entrained air; Fineness; Freeze thaw durability; Water cement ratio
• Old TRIS Terms: Alkalies
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213516
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 67
• Files: TRIS
• Created Date: May 25 1970 12:00AM