STOCHASTIC PROCESS FOR EXTRAPOLATING CONCRETE CREEP

Creep of concrete is modeled as a process with independent increments of locally gamma distribution. The process is transformed to a stationary gamma process. The mean prediction agrees with the deterministic double power law established previously. Infinite divisibility of the increment distribution is assumed. This is justified by additivity of deformations and of stresses, and also by considerations of the microscopic mechanism of creep, assuming creep to be due to migrations of widely spaced solid particles along micropore passages whose length is statistically distributed. The treatment of creep as a stochastic process allows extracting considerable information from measurements even on one specimen, although a greater number of specimens is preferable. The main use of the model is in extrapolation of short time creep data into long times, and calculation of confidence limits. Methods of determining process parameters from creep test data are given. Monte Carlo simulations demonstrate reasonable agreement with test data. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Cinlar, E
  • Bazant, Z P
  • Osman, E M
• Publication Date: 1977-12

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 1069-88
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 103
  • Issue Number: EM6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Concrete; Creep; Deformation; Extrapolation; Forecasting; Mathematical analysis; Mathematical models; Microscopes; Monte Carlo method; Simulation; Stochastic processes; Testing
• Uncontrolled Terms: Increments; Models
• Old TRIS Terms: Concrete creep
• Subject Areas: Construction; Data and Information Technology; Highways;

Filing Info

• Accession Number: 00172430
• Record Type: Publication
• Report/Paper Numbers: ASCE 13447 Proceeding
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM