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Non-Destructive Evaluation of the Interface in Reinforced Concrete Using Phase Measurement Interferometry

  • Masoud Ghandehari (a1), Sridhar Krishnaswamy (a2) and Surendra Shah (a3)

Studying the behavior of steel and concrete as a composite is of fundamental importance to the understanding of the cracking of reinforced concrete structures. In this article, a technique leading toward the development of a constitutive model for the interaction of steel and concrete is described. Experiments are based on pull-out specimens, where the shear stress and the two displacement components at the interface are measured. Phase Measurement Interferometry is used for accurate surface displacement measurement, and crack growth detection. The normal stress is then deduced using the measured crack length and crack opening displacements, along with a fracture mechanics based numerical simulation.

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1. Jenq, Y.S. Shah, S.P. (1985), “Two-parameter Fracture Model for Concrete”, J. Eng. Mech. Div. ASCE, 111(10)
2. Creath, K. (1988), “Phase Measurement Interferometry Technique”, Progress in Optics XXVI ed. Wolf
3. Jones, R., Wykes, C. (1989), “Holographic and Speckle Interferometry” Cambridge Univ. Press
4. FRANC2D (1995), “A Two Dimensional Crack Propagation Simulator” V2.7 Cornell Univ.
5. Gopalaratnam, V.S. Shah, S.P. (1985), “Softening Response of Plain Concrete in Direct Tension” ACI Journal, May-June
6. Hawkins, Yon J. Kobayashi, N.M. , A.S. (1991), “Numerical simulation of mode I dynamic fracture of concrete”, J. Eng. Mech. 117(7)
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MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
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