USE OF A WATER-REDUCING ADMIXTURE IN CRPCC PAVEMENT ON INTERSTATE ROUTE 57

A 3.1-MILE EXPERIMENTAL SECTION OF 4-LANE DIVIDED HIGHWAY ON 4-INCH GRAVEL SUBBASE WAS PAVED WITH 8-INCH CONCRETE CONTAINING 0.6 PERCENT LONGITUDINAL STEEL. WATER REDUCING ADMIXTURE WAS USED IN SOME SECTIONS. A RELATIVELY HIGH STRENGTH CONCRETE WITH APPROXIMATELY 6 PERCENT AIR AND A SLUMP OF 2 1/2 INCHES WAS USED. COMPARISONS OF THE PROPERTIES OF THE CONCRETE CONTAINING THE WATER REDUCING ADMIXTURE AND THE CONTROL CONCRETE INDICATED THAT THE ADMIXTURE: (1) INCREASES SLUMP WITHOUT ADDITIONAL WATER, (2) REDUCES AIR-ENTRAINING ADMIXTURE DEMAND, (3) INCREASES COMPRESSIVE STRENGTH UP TO ONE YEAR, (4) APPARENTLY DOES NOT AFFECT FLEXURAL STRENGTH, (5) APPARENTLY DOES NOT AFFECT WORKABILITY AT EQUAL SLUMP, (6) APPARENTLY DOES NOT AFFECT FREEZE-THAW DURABILITY, (7) APPARENTLY DOES NOT AFFECT SETTING TIMES, (8) APPARENTLY DOES NOT AFFECT SHRINKAGE, (9) INCREASES THE COST OVER THE COST OF ADDITIONAL CEMENT AND WATER TO ACHIEVE THE SAME EFFECT, AND (10) APPEARS TO INCREASE THE SPACING BETWEEN CRACKS AT EARLY AGES IN CRCP. /BPR/

  • Supplemental Notes:
    • Hpr-1/3/, BPR 6, STATE IHR 36
  • Corporate Authors:

    Illinois Department of Transportation

    Division of Highways, 2300 South Dirksen Parkway
    Springfield, IL  USA  62764

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Publication Date: 1967

Subject/Index Terms

Filing Info

  • Accession Number: 00212028
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Jan 16 1994 12:00AM