TIME-DEPENDENT SHEAR TRANSFER IN CRACKING CONCRETE: PART II

In this paper, the basics of an existing model developed for a single reinforced crack subjected to a monotonic shear loading are outlined. This theory is then extended to the sustained loading case. The theoretical model analysed in-plane sustained shear tests on puch-off speciments, each prvided with a central crack. The tests are described by an extended version of Walraven's two-phase model accounting or the interlocking aggregates and matrix material of the opposing crack half. The study found that the damage parameters appear proportional to log (t), and provide reliable predictions of the observed constitutitve relations of a single crack. The calculated restraining stresses of the crack correspond well with in situ strain gauge measurements conducted on the embedded axial steel bars.

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  • Accession Number: 00616228
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 1991 12:00AM