EXPERIMENTAL STUDIES AND MODELING OF THE CONCRETE/ROCK INTERFACE

This study of the concrete/rock interface addresses primarily the interface of limestone and mortar (since no coarse aggregate was used in the mix), and to a lesser extent, mortar and rock-salt. Uniaxial tensile tests with closed-loop-control were used to determine the stress-crack opening displacement relationship in the softening regime. This relationship is being proposed as the constitutive property in an interface cohesive zone model developed for interface fracture. The validity of such a model was investigated through testing and Finite Element (FEM) analysis of Compact Tension (CT) specimens. A theoretical investigation of the effect of the complex singularity attributed to an interface crack was performed within the framework of the interface cohesive zone model. Experimental tools used involved a Scanning Electron Microscope (SEM) to observe microscopic features of the interface that are responsible for strength and toughness.

  • Corporate Authors:

    American Concrete Institute

    P.O. Box 19150, Redford Station, 22400 Seven Mile Road
    Detroit, MI  United States  48219
  • Authors:
    • Wang, J
    • Maji, A K
  • Publication Date: 1995

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00721891
  • Record Type: Publication
  • Report/Paper Numbers: SP-156
  • Files: TRIS
  • Created Date: Jun 14 1996 12:00AM