A STUDY CAMPARING THE SCALING RESISTANCE OF AIR-ENTRAINED CONCRETE WITH CONCRETE CONTAINING A SILICONE ADMIXTURE

THE LABORATORY UNDERTOOK AN INVESTIGATION TO COMPARE THE SCALING RESISTANCE TO FREEZE-THAW ACTION AND THE COMPRESSIVE STRENGTH OF AIR-ENTRAINED CONCRETE WITH CONCRETE CONTAINING A SILICONE CONCRETE ADMIXTURE. FOUR BEAMS WERE MADE AND TESTED FOR FLEXURAL STRENGTH IN THE FIELD. TWELVE PRISMS WERE MADE IN THE FIELD AND TESTED IN THE LABORATORY FOR SCALING RESISTANCE, WEIGHT LOSS, AND CHANGE IN LENGTH. TWENTY-FOUR CYLINDERS WERE MADE IN THE FIELD AND TESTED IN THE LABORATORY FOR COMPRESSIVE STRENGTH. THE CONCRETE CONTAINING THE SILICONE ADMIXTURE REACHED FINAL SET FROM THIRTY TO THIRTY-SIX HOURS AFTER PLACEMENT. ITS FLEXURAL STRENGTH WAS FOUND TO BE SLIGHTLY HIGHER AFTER TWENTY-EIGHT DAYS THAN THAT OF THE AIR-ENTRAINED CONCRETE. THE COMPRESSIVE STRENGTH OF THE ADMIXTURE CONCRETE WAS FOUND TO BE APPROXIMATELY 11 PER CENT HIGHER AFTER THIRTY DAYS, 14 PER CENT HIGHER AFTER NINETY DAYS, AND 15 PER CENT HIGHER AFTER ONE YEAR THAN THE COMPRESSIVE STRENGTH OF THE AIR- ENTRAINED CONCRETE. NO DIFFERENCE WAS FOUND IN THE SCALING RESISTANCE BETWEEN THE TWO TYPES OF CONCRETE UP TO APPROXIMATELY 800 CYCLES. HOWEVER, BEYOND THAT NUMBER OF CYCLES, THE ADMIXTURE CONCRETE WAS FOUND TO HAVE A SLIGHTLY HIGHER RESISTANCE TO SCALING FROM THE EFFECTS OF FREEZE-THAW ACTION. NO DIFFERENCE IN LOSS OF WEIGHT OR INCREASE IN LENGTH COULD BE DETERMINED BETWEEN THE TWO TYPES OF CONCRETE DUE TO THE FREEZE-THAW ACTION. /AUTHOR/

  • Supplemental Notes:
    • Research PrOJECT NO 33, 40 PP
  • Corporate Authors:

    Idaho Department of Highways

    Moscow Materials Testing Lab
    Moscow, ID  USA 
  • Publication Date: 1967-8

Subject/Index Terms

Filing Info

  • Accession Number: 00212479
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Dec 29 1994 12:00AM