X-ray diffraction measurement of stresses in post-tensioning tendons

Michael G. Carfagno; Faired S. Noorai; Michael E. Brauss; James A. Pineault

doi:10.1117/12.259152

13 November 1996 X-ray diffraction measurement of stresses in post-tensioning tendons

Michael G. Carfagno, Faired S. Noorai, Michael E. Brauss, James A. Pineault

Proceedings Volume 2946, Nondestructive Evaluation of Bridges and Highways; (1996) https://doi.org/10.1117/12.259152
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

Abstract

As part of an ongoing inspection and maintenance program for the prestressed, post-tensioned concrete runway extension decks at La Guardia Airport, a state-of-the-art method known as x-ray diffraction was utilized to non-destructively measure stresses in existing post-tensioning tendons. A review of the theory of x-ray diffraction stress measurement is given and a case study of the first known application of x-ray diffraction stress measurement to in-situ post- tensioning as undertaken by the Port Authority at La Guardia Airport is presented.

Citation Download Citation

Michael G. Carfagno, Faired S. Noorai, Michael E. Brauss, and James A. Pineault "X-ray diffraction measurement of stresses in post-tensioning tendons", Proc. SPIE 2946, Nondestructive Evaluation of Bridges and Highways, (13 November 1996); https://doi.org/10.1117/12.259152

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