CONCRETE VARIABLES AND CORROSION TESTING

SEVEN HUNDRED AND TEN REINFORCED CONCRETE BLOCKS WERE PARTIALLY SUBMERGED IN A SATURATED SODIUM CHLORIDE SOLUTION. BASED UPON THE TEST CRITERION THAT A SUFFICIENT QUANTITY OF CONCRETE ABSORBED CHLORIDE CAUSES THE STEEL TO CHANGE FROM A PASSIVE TO AN ACTIVE OR CORRODING HALF-CELL POTENTIAL, THE TEST RESULTS (1) INCREASED THE CEMENT FACTOR, AND (2) INCREASED THE LENGTH OF WATER CURING, RAISING THE TIME TO AN ACTIVE HALF-CELL POTENTIAL. THE STEAM CURING OF THE CONCRETE RESULTED IN A REDUCTION OF THE TIME TO AN ACTIVE HALF-CELL POTENTIAL AS WELL AS THE REDUCTION IN ABSORPTION AS COMPARED TO JUST WATER CURING. A TEST PROCEDURE USED VERIFIED CAPILLARY ACTION AS THE PRIMARY MECHANISM OF WATER ABSORPTION. THE CHLORIDE CONTENT OF THE CONCRETE WAS DETERMINED. OF THE THREE TESTED ADMIXTURES AND CORROSION INHIBITORS, ONLY POZZOLAN APPEARED TO RESULT IN A SIGNIFICANT BENEFIT, EVEN THOUGH THIS CONCRETE HAD THE GREATEST ABSORPTION AND ALSO THE GREATEST DRYING SHRINKAGE. /FHWA/

  • Supplemental Notes:
    • Contract No D-3-11
  • Corporate Authors:

    California Division of Highways

    Materials and Research Department
    Sacramento, CA  USA  95819
  • Authors:
    • Spellman, D L
    • Stratfull, R F
  • Publication Date: 1972-1

Media Info

  • Pagination: 48 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00212123
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Apr 8 1973 12:00AM