EXPANSIVE CONCRETES - LABORATORY TESTS OF FREEZE-THAW AND SURFACE SCALING RESISTANCE

TO STUDY THE FREEZE-THAW AND SURFACE SCALING RESISTANCE OF SELF-STRESSING AND SHRINKAGE-COMPENSATING CONCRETES, 112 SLAB SPECIMENS, 3X6X15 IN., WERE CAST AND SUBJECTED TO LABORATORY TESTS. FIVE DIFFERENT CEMENTS WERE INCLUDED IN THE STUDY' A PORTLAND CEMENT, TWO MIXTURES OF PORTLAND CEMENT AND PULVERIZED ANHYDROUS CALIUM SULFOALUMINATE CLINKER /KLEIN EXPANSIVE COMPONENT/ DESIGNATED S AND K, AND TWO BLENDS OF PORTLAND CEMENT, CALCIUM ALUMINATE CEMENT, AND GYPSUM- DESIGNATED B-1 AND B-2. MIXES S AND B-1 WERE CONSIDERED TO BE SHRINKAGE-COMPENSATING, AND MIXES K AND B-2 SELF-STRESSING. INTERNAL RESTRAINT WAS PROVIDED BY THREE REINFORCING SCHEMES, USING WELDED-WIRE FABRIC. SOME SPECIMENS WERE UNREINFORCED. TWO METHODS OF CURING WERE INCLUDED. ALL CONCRETES CONTAINED ABOUT 8 BAGS OF CEMENT /INCLUDING EXPANSIVE MATERIALS/ PER CUBIC YARD, AND ENTRAINED AIR. STRESSES DEVELOPED RANGED UP TO ABOUT 600 PSI IN THE SELF-STRESSING CONCRETES, AND UP TO ABOUT 120 PSI IN THE SHRINKAGE-COMPENSATING CONCRETES. THE SHRINKAGE- COMPENSATING CONCRETES WERE SUBJECTED TO 300 CYCLES OF FREEZING AND THAWING IN WATER OR 300 CYCLES OF DE-ICER APPLICATION WITHOUT SIGNIFICANT DETERIORATION. THE SELF- STRESSING CONCRETES REQUIRED CONSIDERABLE REINFORCEMENT RESTRAINT TO WITHSTAND 300 FREEZE-THAW CYCLES, NONE OF THE SELF-STRESSING CONCRETE SPECIMENS SURVIVED 300 CYCLES OF DE-ICER APPLICATION. /AUTHOR/

  • Supplemental Notes:
    • Vol 8,no 1,PP 10-36
  • Corporate Authors:

    Portland Cement Association

    5420 Old Orchard Road
    Skokie, IL  United States  60077
  • Authors:
    • Gustaferro, A H
    • Greening, N
    • Klieger, P
  • Publication Date: 1966-1

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  • Accession Number: 00212373
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 5 2003 12:00AM