PORES IN CONCRETE SURFACES

AN INVESTIGATION WAS CONDUCTED TO STUDY THE PORE-SEALING PROPERTIES OF THE FOLLOWING METHODS OF SURFACE TREATMENT: (1) COATING WITH ALKYD-BASED SEALING PAINT, (2) COATING WITH PLASTIC-BASED SEALING PAINT, (3) COATING WITH OIL-EMULSION PAINT, (4) SEALING WITH PLASTIC PUTTY AND COATING WITH ALKYD-BASED SEALING PAINT, (5) STOPPING WITH PUTTY, SCRATCHING, AND COATING WITH ALKYD-BASED SEALING PAINT, (6) FILLING WITH SAND PUTTY, RAKING, GRINDING, AND COATING WITH ALKYD-BASED PAINT, (7) FILLING WITH SAND PUTTY AND SPRAY-GUN PAINTING TO ORANGE-PEEL TEXTURE FORMING A THIN COATING, AND (8) FILLING WITH SAND PUTTY AND SPRAY-GUN PAINTING TO ORANGE-PEEL TEXTURE FORMING A THICK COATING. THE INVESTIGATION WAS MADE ON A NUMBER OF CONCRETE SLABS WHICH HAD BEEN SPECIALLY PREPARED SO THAT A GREAT NUMBER OF PORES WERE PRODUCED ON THEIR LATERAL SURFACES IN THE COURSE OF TESTING. THE NUMBER OF PORES AND THEIR EXTENT WERE RECORDED BY MEANS OF A SPECIAL MEASURING PROCEDURE WHICH HAD BEEN DEVELOPED. THE SURFACE TREATMENT WERE APPLIED TO THE LATERAL SURFACES OF THE SLABS AND THE PORE MEASUREMENTS REPEATED. A STATISTICAL ANALYSIS WAS MADE OF THE RESULTS OBTAINED FROM THESE MEASUREMENTS. THE PROBABILITY WAS CALCULATED OF COMPLETE PORE SEALING AND OF PORE SIZE REDUCTION. MEASUREMENTS FOR THE FIRST FOUR METHODS SHOW THAT THE SURFACE TREATMENT REDUCED THE SIZE OF EACH PORE BY A VALUE EQUAL TO THE MAXIMUM SIZE OF THE PORES WHICH WERE COMPLETELY SEALED BY THE SURFACE TREATMENT. EVALUATION OF RESULTS OBTAINED FROM THE LAST FOUR METHODS SHOWED THAT COMPLETE SEALING OF PORES WAS IN PART INDEPENDENT OF THE PORE SIZE. HOWEVER, THERE WERE CERTAIN DEFINITE PORE SIZES BELOW WHICH ALL PORES WERE SEALED WITH CERTAINTY. THE PROBABILITY OF COMPLETE PORE SEALING IS REPRESENTED IN FIGURES AS A FUNCTION OF THE PORE SIZE.

  • Supplemental Notes:
    • Vol 12, No 2, PP 107-126, 8 FIG, 8 TAB, 5 REF
  • Authors:
    • Dylander, B
  • Publication Date: 1968

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  • Accession Number: 00213256
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 9 1994 12:00AM