ELECTROCURING OF CONCRETE TEST SPECIMENS

THE BEHAVIOR OF HIGH EARLY STRENGTH, ORDINARY, AND LOW HEAT PORTLAND CEMENTS UNDER ACCELERATED CURING WAS INVESTIGATED IN RELATION TO THEIR CHEMICAL COMPOSITIONS. IT IS SHOWN THAT A HIGH TRIACALCIUM SILICATE CONTENT IS IMPORTANT FOR MAXIMUM BENEFIT WITH ACCELERATED CURING AND THAT THE GYPSUM CONTENT APPEARS TO BE CRITICAL. THE RESULTS ESTABLISH DEFINITELY THAT THE OLD LAWS RELATING STRENGTH TO MATURITY FOR CURING AT DIFFERENT TEMPERATURES ARE UNTENABLE. THE TEMPERATURE RISE WAS OBTAINED BY PASSING AN ELECTRICAL CURRENT THROUGH THE CONCRETE. THE TEMPERATURE DIFFERENCE BETWEEN THE INSIDE AND OUTSIDE OF THE SPECIMEN DUE TO ACCELERATED CURING WAS COMPLETELY ELIMINATED, WHICH APPEARS TO HAVE REDUCED ITS LOSS OF STRENGTH AT 28 DAYS AS COMPARED WITH THOSE SPECIMENS CURED NORMALLY. THIS IS TRUE EVEN IF A TEMPERATURE RISE MORE RAPID THAN THAT SPECIFIED BY PREVIOUS RESEARCHERS IS ADOPTED. THE TECHNIQUE IS DEVELOPED TO THE EXTENT THAT CONSIDERABLY LOWER COEFFICIENTS OF VARIATION ARE OBTAINED WITH ELECTRICALLY PURED SPECIMENS THAN WITH NORMALLY CURED SPECIMENS. /AUTHOR/

• Supplemental Notes:
  • Vol 6, No 3, PP 617-642
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Orchard, D F
  • Barnett, A M
• Publication Date: 1971-9

Media Info

• Serial:
  • Journal of Materials
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Concrete curing; Curing agents; Electric current; Gypsum; Portland cement; Strength of materials; Temperature
• Old TRIS Terms: Electrocuring
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214043
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 25 1971 12:00AM