SILICONE INFLUENCE ON CONCRETE RESISTANCE TO FREEZE-THAW AND DE-ICER DAMAGE

THIS PAPER PRESENTS THE RESULTS OF A COMPREHENSIVE LABORATORY STUDY ON THE EFFECT OF VARIOUS SILICONES, USED AS SURFACE TREATMENT OR AS INTEGRAL ADMIXTURE, ON THE RESISTANCE OF CONCRETE TO FREEZING AND THAWING AND DE-ICER SCALING. VARIOUS TYPES OF NON-AIR-ENTRAINED AND AIR CONCRETES WERE USED. RESULTS INDICATE THAT THE SURFACE SILICONE TREATMENTS RESULTED IN LOWER RESISTANCE TO FREEZING AND THAWING AND TO DE-ICER SCALING, PARTICULARLY FOR THE NON-AIR-ENTRAINED CONCRETES AND THE CONCRETES WITH AN INADEQUATE AMOUNT OF INTENTIONALLY ENTRAINED AIR. ALTHOUGH APPLICATIONS OF SILICONE SURFACE TREATMENTS REDUCED THE INITIAL RATE OF ABSORPTION OF WATER, ON CONTINUED IMMERSION FOR PERIODS RANGING FROM 7 TO 14 DAYS, THE TOTAL ABSORPTIONS FOR TREATED AND UNTREATED CONCRETES WERE ESSENTIALLY IDENTICAL. THESE STUDIES INDICATE THAT THE USE OF SILICONES FOR TREATMENT OF HORIZONTAL CONCRETE SURFACES SUCH AS PAVEMENT SLABS OR BRIDGE DECKS MAY BE DETRIMENTAL RATHER THAN BENEFICIAL WITH REGARD TO RESISTANCE TO FREEZING AND THAWING AND DE-ICER SCALING. THE MOST EFFECTIVE MEANS FOR INSURING SUCH DURABILITY WAS TO PROVIDE AN ADEQUATE AMOUNT AND CHARACTER OF ENTRAINED AIR IN A CONCRETE OF RELATIVELY LOW WATER-CEMENT RATIO. SILICONE AS AN INTEGRAL ADMIXTURE APPEARED OF LITTLE BENEFIT IN THE PERFORMANCE OF THE NON-AIR-ENTRAINED CONCRETES. VERTICAL SURFACES OF AIR-ENTRAINED CONCRETES WERE TREATED WITH SILICONES AND THEN SUBJECTED TO FREEZING IN AIR AND THAWING IN AIR WITH INTERMITTENT WATER SPRAYING. THESE SHOWED A REDUCED TENDENCY TO WET. HOWEVER, BOTH TREATED AND UNTREATED VERTICAL SURFACES SHOWED EXCELLENT RESISTANCE TO THIS TYPE OF EXPOSURE. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1963/18/18-003.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Klieger, Paul
  • Perenchio, William
• Publication Date: 1963

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 33-47
• Monograph Title: Freezing and thawing of concrete and use of silicones
• Serial:
  • Highway Research Record
  • Issue Number: 18
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Admixtures; Air entrained concrete; Concrete; Deicers (Equipment); Freeze thaw durability; Freeze thaw tests; Laboratory tests; Protective coatings; Silicones; Surface treating
• Uncontrolled Terms: Deicers; Scaling
• Old TRIS Terms: Resistance
• Subject Areas: Highways; Maintenance and Preservation; Vehicles and Equipment;

Filing Info

• Accession Number: 00217970
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 29 1994 12:00AM