PRACTICAL PREDICTION OF TIME-DEPENDENT DEFORMATIONS OF CONCRETE I - SHRINKAGE; II - BASIC CREEP

THE AUTHORS PROPOSE A PRACTICAL MODEL FOR PREDICTING THE CREEP AND SHRINKAGE OF CONCRETE FROM THE MIX DESIGN, STRENGTH, AGE AT LOADING, ENVIRONMENTAL CONDITIONS, DIMENSIONS AND SHAPE. THE MAIN CHARACTERISTICS ARE: DOUBLE POWER LAW FOR BASIC CREEP, QUADRATIC HYPERBOLIC LAW FOR SHRINKAGE, SCALE EFFECT OF THE "MOISTURE DIFFUSION" TYPE, AN ADDED DRYING CREEP FACTOR LINKED TO SHRINKAGE AND THERMAL EFFECTS CAUSED BY ACTIVATION ENERGY. OPTIMIZATION TECHNIQUES WERE USED SO AS TO MAKE THE NUMEROUS TEST RESULTS PUBLISHED AGREE. THIS INVESTIGATION IS A CONTINUATION OF PREVIOUS STUDIES AND IS DIVIDED AS FOLLOWS: PART (1) DEALS WITH SHRINKAGE; IN PART (2) THE DOUBLE POWER LAW WHICH HAS BEEN SHOWN TO BE EFFECTIVE IN TRANSLATING TEST RESULTS WITH EXCELLENT APPROXIMATION, IS DEVELOPED AS A PRACTICAL MODEL FOR THE FORECAST OF CREEP AT CONSTANT MOISTURE CONTENT AND TEMPERATURE FROM MIX DESIGN, STRENGTH, AGE AT LOADING AND LOADING DURATION.

Language

  • English

Media Info

  • Pagination: 307-28
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01289549
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 1:49AM