CREEP OF PORTLAND CEMENT PASTE

COMPRESSION CREEP TESTS WERE PERFORMED AT APPROXIMATELY FORTY PER CENT OF ULTIMATE STRESS ON HOLLOW CYLINDERS OF HARDENED PORTLAND CEMENT PASTE OF WATER/CEMENT RATIOS OF 0.3 TO 0.4. THE SPECIMENS WERE ABOUT 6 BY 1 IN. AND 0.1 IN. THICK. THE TESTS WERE CONTINUED TO ABOUT 1000 HR AND WERE PERFORMED ON SATURATED AND OVEN-DRY SPECIMENS. STRAINS WERE MEASURED OPTICALLY. SATURATED SPECIMENS GAVE CREEP CURVES THAT HAD THREE FAIRLY DISTINCT REGIONS, INDICATING MORE THAN ONE MECHANISM TO BE IMPORTANT. THESE CURVES ALSO SHOW A DEFINITE PATTERN OR SCALLOP EFFECT FOR WHICH A MECHANISM IS POSTULATED. THE OVEN-DRY SPECIMENS EXHIBITED NO CREEP AT ALL WITHIN THE LIMITS OF THE MEASUREMENTS. THIS RESULT POINTS TO WATER MOVEMENT AS THE DOMINANT MECHANISM IN CREEP OF CONCRETE. /AUTHOR/

• Supplemental Notes:
  • No Ce 227, PP 1146-1171
• Corporate Authors:

  Purdue University

  School of Aeronautics and Astronautics
  West Lafayette, IN  United States  47907
• Authors:
  • Mullen, W G
  • Dolch, W L
• Publication Date: 1967-1

Subject/Index Terms

• TRT Terms: Compression; Concrete hardening; Creep; Hardness; Motion; Optical measurement; Oven drying; Pastes; Percent saturation; Portland cement; Specimens; Strain measurement; Testing; Water; Water cement ratio
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00212428
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM