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/

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