EVALUATION OF SEVERAL TYPES OF CURING AND PROTECTIVE MATERIALS FOR CONCRETE

THIRTY-NINE TEST PANELS WERE INSTALLED ON THREE INTERSTATE BRIDGES TO EVALUATE SEVERAL COMBINATIONS OF CURING AND PROTECTIVE TREATMENTS FOR CONCRETE. PANELS WERE CURED WITH WHITE PIGMENTED LIQUID MEMBRANE AND WHITE POLYETHYLENE, BOTH WITH AND WITHOUT SUBSEQUENT TREATMENTS USING LINSEED OIL. ONE PANEL RECEIVED A CHLORINATED RUBBER SEALER MARKETED AS A COMBINED CURING AND PROTECTIVE MATERIAL. ON SOME PANELS A MONOMOLECULAR FILM WAS USED TO REDUCE EVAPORATION PRIOR TO REGULAR CURING. DETAILED OBSERVATIONS OF CONSTRUCTION OPERATIONS AND ATMOSPHERIC CONDITIONS WERE RECORDED AND IMPORTANT PROPERTIES OF THE FRESHLY MIXED AND HARDENED CONCRETE DETERMINED. PERIODIC CONDITION SURVEYS ARE PLANNED. SOME OBSERVATIONS AND CONCLUSIONS, AND RECOMMENDATIONS WERE: (1) SPECIMENS TREATED WITH LINSEED OIL SHOWED REDUCED SCALING AND WEIGHT LOSS AS COMPARED TO THOSE WITHOUT THE TREATMENT AND THOSE CURED WITH CHLORINATED RUBBER. (2) LINSEED OIL COVERAGE RATES WERE VERY CLOSE TO THE TARGET VALUE OF 0.040 GAL/SQ. YD. AT THIS COVERAGE RATE, THE PRESENCE OF THE LINSEED OIL IS BARELY DISCERNIBLE AFTER A MONTH OR TWO. (3) THE PERFORMANCE OF THE CHOLORINATED RUBBER WAS UNSATISFACTORY. IT DEVELOPED A VERY TENACIOUS FILM WHICH BLISTERD AND REDUCED SKID RESISTANCE BY ABOUT 25 PERCENT. (4) DESIRABLE BENEFITS OF THE MONOMOLECULAR FILM IN EXTENDING TIME AVAILABLE FOR FINISHNG AND FOR USE IN EMERGENCY SITUATIONS WAS QUALITATIVELY CONFIRMED. (5) DIFFICULTIES WITH FINISHING WERE ASSOCIATED WITH DAYS WHEN THE COMPUTED EVAPORATION RATES EXCEEDED 0.10 LB/SQ. FT./HR. (6)HIGH MIXTURE TEMPERATURES COMBINED WITH HIGH AIR TEMPERATURES WERE REFLECTED IN A MEASURABLE REDUCTION OF COMPRESSIVE STRENGTHS AND ACCELERATION OF SETTING. (7) THE CURRENTLY SPECIFIED CURING PROCEDURES FOR CONCRETE BRIDGE DECKS FOLLOWED BY LINSEED OIL TREATMENTS CONTINUE TO BE THE MOST SATISFACTORY OF THE SEVERAL ALTERNATIVES PRACTICALLY AVAILABLE FOR IMPROVED DURABILITY. (8) APPLICATION OF THE LINSEED OIL TREATMENTS FOLLOWING CURING WITH A WHITE PIGMENTED RESIN BASED COMPOUND OF THE TYPE SPECIFIED BY THE VIRGINIA DEPARTMENT OF HIGHWAYS WAS AGAIN SHOWN TO BE SATISFACTORY. (9) PROCEDURES FOR UTILIZATION OF THE MONOMOLECULAR FILM SHOULD BE INITIATED SO THAT IT CAN BE AVAILABLE IN SITUATIONS WHERE IT IS NEEDED. (10) SPECIFICATION OF ITS USE FOR ALL DECKS IS NOT DESIRABLE. (11) UNLESS PENETRATION CAN BE DEMONSTRATED, NO FURTHER CONSIDERATION SHOULD BE GIVEN TO MATERIALS DESIGNED TO CURE AND PROTECT IN A SINGLE APPLICATION.

  • Record URL:
  • Supplemental Notes:
    • Vhrc 70-r16, 53 PP, 19 FIG, 17 TAB, 10 REF, 2 APP
  • Corporate Authors:

    Virginia Highway Research Council

    Charlottesville, VA  United States 
  • Authors:
    • Newlon, H H
  • Publication Date: 1970-10

Subject/Index Terms

Filing Info

  • Accession Number: 00213878
  • Record Type: Publication
  • Files: NTL, TRIS
  • Created Date: Apr 18 1971 12:00AM