A METHOD TO PREDICT SHRINKAGE CRACKING OF CONCRETE

A theoretical model based on nonlinear fracture mechanics is developed for predicting transverse cracking of a concrete ring specimen caused by drying shrinkage. Using the measured material fracture parameters, fracture resistance curve of the ring specimen is determined. The maximum allowable tensile strain is then calculated based on energy balance during shrinking of the ring. Age at transverse cracking of the ring specimen caused by restrained drying shrinkage is predicted by equating the difference between the measured free shrinkage and the estimated creep to the maximum allowable tensile strain. The predicted age at cracking is in reasonable agreement with the experimental measurement.

Language

  • English

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Filing Info

  • Accession Number: 00754603
  • Record Type: Publication
  • Contract Numbers: MSS-9313062, 1794/20-3-95, NSC 85-2211-E-005-010
  • Files: TRIS
  • Created Date: Oct 11 1998 12:00AM