STATIC FATIGUE OF HYDRATED CEMENT CONCRETE

THE EFFECT OF ENVIRONMENTAL HUMIDITY ON STATIC LOAD FAILURE OF CONCRETE IS INVESTIGATED. CEMENT-SAND BEAMS WERE STATICALLY LOADED TO ABOUT 90 TO 95 PERCENT OF THEIR AVERAGE EXPECTED FAILURE STRENGTH. RELATIVE HUMIDITY OF THE TEST ENVIRONMENT WAS CONTROLLED AT SEVERAL LEVELS FROM 0 TO 90 PERCENT. TIMES TO FAILURE UNDER STATIC LOAD WERE FOUND TO INCREASE WITH DECREASING RELATIVE HUMIDITY. BEAMS TESTED AT 0 PERCENT HUMIDITY DID NOT FAIL EVEN WHEN LENGTH OF TESTS FAR EXCEEDED THE MEAN FAILURE TIMES FOR TEST AT NONZERO HUMIDITY LEVELS. SCANNING ELECTRON MICROSCOPE STUDIES FAILED TO SHOW EVIDENCE OF A STRESS CORROSION MECHANISM AT THE 100 ANGSTROM SCALE. /AUTHOR/

• Supplemental Notes:
  • Proc Vol 68, NO 4, PP 263-271
• Authors:
  • Husak, A D
  • Krokosky, E M
• Publication Date: 1971-4

Media Info

• Serial:
  • Am Concrete Inst Journal & Proceedings

Subject/Index Terms

• TRT Terms: Beams; Cement; Concrete; Electron microscopes; Environment; Failure; Fatigue (Mechanics); Humidity; Sand; Static loads; Time
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213930
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 22 1971 12:00AM