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Proceedings Paper

Borehole NDT techniques for unknown subsurface bridge foundation testing
Author(s): Larry D. Olson; Ming Liu; Marwan F. Aouad
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Paper Abstract

Nondestructive methods are increasingly being used in the USA for evaluation of our aging infrastructure. One of the areas of concern is he determination of conditions of unknown bridge foundation. Foremost is the need to determine the foundation depth, followed by foundation type, geometry, and subsurface conditions. Recently, a comprehensive evaluation was made of potential NDT technologies that have relevance to this problem in the NCHRP 21-5 project 'Determination of Unknown Subsurface Bridge Foundations'. This paper presents the test results of a research study on the applicability of using borehole-based nondestructive test (NDT) techniques for the determination of unknown subsurface bridge foundations. The results included in this paper are from the three borehole-based NDT techniques of parallel seismic test, borehole sonic test, and borehole radar test. The parallel seismic method was found to have the broadest application to the investigations of concrete, timber, and steel bridge substructures.

Paper Details

Date Published: 13 November 1996
PDF: 7 pages
Proc. SPIE 2946, Nondestructive Evaluation of Bridges and Highways, (13 November 1996);
Show Author Affiliations
Larry D. Olson, Olson Engineering, Inc. (United States)
Ming Liu, Olson Engineering, Inc. (United States)
Marwan F. Aouad, Olson Engineering, Inc. (United States)

Published in SPIE Proceedings Vol. 2946:
Nondestructive Evaluation of Bridges and Highways
Steven B. Chase, Editor(s)

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