MECHANISM OF CREEP OF HYDRATED PORTLAND CEMENT PASTE

UNDERSTANDING OF THE MECHANISM OF CREEP REQUIRES DIRECT MEASUREMENT OF THE PHYSICAL CHANGES THAT OCCUR IN THE MICRO- UNITS OF THE SOLID AND IN THE SOLID BODY ITSELF AS A RESULT OF CHANGE IN EXPOSURE CONDITIONS. RESULTS OF RIGIDLY CONTROLLED WATER SORPTION EXPERIMENTS ARE PRESENTED, GIVING MEASUREMENTS OF CHANGE IN LENGTH, WEIGHT, SOLID VOLUME, AND HELIUM FLOW CHARACTERISTICS AS A FUNCTION OF CHANGE IN CONDITIONS OF EXPOSURE. THESE ARE CORRELATED WITH CREEP RESULTS IN THE LITERATURE. IT IS CONCLUDED THAT CREEP IS A MANIFESTATION OF THE GRADUAL CRYSTALLIZATION OR AGING PROCESS OF THE LAYERED MATERIAL, RESULTING IN FURTHER LAYERING. WATER MOVEMENT, ALTHOUGH OCCURRING, IS NOT A MAJOR MECHANISM. OTHER PROCESSES SUCH AS SLIPPAGE AND MICRO- CRACKING ARE ALSO PRESENT. /HRB/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Authors:
  • FELDMAN, R F
• Publication Date: 1972-9

Media Info

• Pagination: p. 521-40
• Serial:
  • Cement and Concrete Research
  • Volume: 2
  • Issue Number: 5
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Cement paste; Crash exposure; Creep; Creep properties; Crystallization; Fracture mechanics; Hydration; Portland cement; Stratification
• Uncontrolled Terms: Exposure; Slippage
• Old TRIS Terms: Aging
• Subject Areas: Highways; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00214179
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 18 1972 12:00AM