CREEP AND SHRINKAGE OF CONCRETE UNDER VARYING EXTERNAL CONDITIONS

THE EFFECTS OF DIFFERENT TYPES OF PERIODIC CHANGES IN STRESSES, IN MOISTURE CONDITIONS, AND IN TEMPERATURE CONDITIONS HAVE BEEN STUDIED IN A PILOT TEST SERIES. A FURTHER STUDY OF THE SPECIFIC EFFECT OF PERIODIC VARIATIONS IN STRESS SHOWED THAT A CHARACTERISTIC STRESS, APPLIED AS A CONSTANT STRESS, EQUALIZED THE VARYING STRESSES WITHIN REASONABLE LIMITS SO FAR AS THE DEVELOPMENT OF CREEP WAS CONCERNED. PERIODIC CHANGES IN MOISTURE CONDITIONS DURING THE FIRST MONTHS OF LOADING INFLUENCED THE CREEP, AS WELL AS THE SHRINKAGE. IT WAS FOUND THAT IMMERSION IN WATER FOR SHORT PERIODS OF TIME (6 HOURS PER PERIOD OF 7 DAYS) ALSO REDUCED THE LONG-TIME VALUES OF CREEP AND SHRINKAGE. /RRL/A/

• Supplemental Notes:
  • Vol 11, No 1, PP 9-26, 15 FIG, 3 TAB, 4 REF
• Authors:
  • Bernhardt, C J
• Publication Date: 1967

Media Info

• Serial:
  • Nordisk Betong /Sweden/

Subject/Index Terms

• TRT Terms: Concrete; Creep; Loads; Moisture content; Shrinkage; Stresses; Temperature; Time; Water
• Uncontrolled Terms: Immersion; Loading
• Old TRIS Terms: Concrete creep
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00212819
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Mar 18 1994 12:00AM