CURING REQUIREMENTS FOR SCALE RESISTANCE OF CONCRETE

THE RECORD OF FIELD PERFORMANCE OF AIR-ENTRAINED CONCRETE PAVEMENT WITH REGARD TO SURFACE SCALING RESULTING FROM THE USE OF DE-ICERS IS EXCELLENT. APPROXIMATELY 15 YEARS OF FIELD EXPERIENCE, TOGETHER WITH EXTENSIVE LABORATORY TESTS, HAVE SHOWN THAT THE USE OF ENTRAINED AIR HAS SOLVED AN IMPORTANT PAVEMENT PROBLEM WHICH WAS BECOMING MORE SERIOUS WITH THE INCREASING USE OF CHEMICALS FOR ICE CONTROL. THE PROBLEM OF THE EARLIEST AGE AT WHICH DE-ICERS, SUCH AS CALCIUM CHLORIDE, MAY SAFELY BE USED ON NEW AIR-ENTRAINED CONCRETE PAVEMENTS IS OF CONCERN TO HIGHWAY ENGINEERS. THIS CONCERN STEMS FROM PREVIOUS PRACTICAL EXPERIENCE WITH NON-AIR-ENTRAINED CONCRETE PAVEMENTS. SHORTLY AFTER THE INTRODUCTION OF THE USE OF DE-ICERS, FIELD SURVEYS INDICATED THAT OLDER NON-AIR-ENTRAINED PAVEMENTS RESISTED SURFACE SCALING BETTER THAN RELATIVELY NEW NON-AIR-ENTRAINED PAVEMENTS. THIS LED TO THE ESTABLISHMENT OF MINIMUM AGES AT WHICH DE-ICERS MIGHT SAFELY BE USED, HOWEVER, THE VARIOUS HIGHWAY DEPARTMENTS WERE FAR FROM AGREEMENT ON THESE AGE REQUIREMENTS. A RECENT SURVEY OF HIGHWAY DEPARTMENT PRACTICES, CONDUCTED BY COMMITTEE B-7 OF THE HIGHWAY RESEARCH BOARD, INDICATES THAT THESE MINIMUM AGES RANGED FROM A FEW MONTHS UP TO 5 AND 10 YEARS. DESPITE THE EXCELLENT PERFORMANCE RECORD OF AIR-ENTRAINED CONCRETE PAVEMENTS, MANY STATES ARE APPLYING THE SAME AGE REQUIREMENTS TO BOTH TYPES OF CONCRETE PAVEMENT. ONLY A LIMITED AMOUNT OF INFORMATION IS AVAILABLE BEARING DIRECTLY ON THIS PROBLEM. THIS STUDY WAS UNDERTAKEN, THEREFORE, TO PROVIDE ADDITIONAL INFORMATION WHICH MIGHT INTEREST THOSE CONCERNED WITH THE USE OF DE-ICERS ON NEW AIR-ENTRAINED CONCRETE PAVEMENTS. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/150/150-003.pdf
• Supplemental Notes:
  • No 150, pp 18-31, 3 FIG, 11 TAB, 2 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Klieger, Paul
• Publication Date: 1957

Media Info

• Monograph Title: Effect of de-icing chlorides on vehicles and pavements
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 150
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Age; Air entrained concrete; Calcium chloride; Concrete curing; Concrete pavements; Deicers (Equipment); Pavement performance
• Uncontrolled Terms: Deicers; Scaling
• Subject Areas: Highways; Maintenance and Preservation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00213331
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jul 7 1994 12:00AM