THE EFFECT OF ATMOSPHERIC CONDITIONS DURING THE BLEEDING PERIOD AND TIME OF FINISHING ON THE SCALE RESISTANCE OF CONCRETE

SPECIMENS OF BOTH NON-AIR-ENTRAINED AND AIR-ENTRAINED CONCRETES ARE SUBJECTED, DURING THE BLEEDING PERIOD, TO VARIATIONS IN WIND VELOCITY AND TEMPERATURE AND GIVEN FINAL FINISHES AT DIFFERENT TIMES DURING BLEEDING. TEST RESULTS INDICATE THAT THE SCALE RESISTANCE OF AIR-ENTRAINED CONCRETES WAS NOT INFLUENCED BY SURFACE EXPOSURE, TEMPERATURE, OR TIME OF FINAL FINISHING. BOTH THE RATE AND AMOUNT OF BLEEDING AND RESISTANCE TO SURFACE SCALING OF THE NON-AIR-ENTRAINED CONCRETES INCREASED WITH AN INCREASE IN THE VELOCITY OF AIR OVER THE SURFACE. NON-AIR-ENTRAINED CONCRETE SURFACES STRUCK OFF IMMEDIATELY AFTER CASTING SHOWED GREATER RESISTANCE TO SURFACE SCALING THAN THOSE GIVEN A SECOND AND FINAL FINISH. /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 entrained concrete; Atmosphere; Bleeding; Concrete finishing; Temperature; Wind
• Uncontrolled Terms: Scaling
• Old TRIS Terms: Resistance
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213521
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 72
• Files: TRIS
• Created Date: May 25 1970 12:00AM