UNDERSTANDING THE CAPABILITIES OF NONDESTRUCTIVE TESTS FOR DEEP FOUNDATIONS
Nondestructive testing (NDT) of deep foundations is becoming a regular feature of large construction projects such as bridges and dams-particularly for those foundations constructed under water or in saturated soils where the slurry or water is necessary to stabilize drilled shafts until the concrete is placed. Unfortunately, the methods are relatively new in the United States, and are, at the time of the project, rarely covered in any detail in engineering classes. The results is that many of the people specifying the use of the methods, or basing their acceptance of the shafts in part on the results of NDT, are unaware that the methods vary considerably in their capabilities and limitations. Use of an inappropriate NDT method for a given set of circumstances will, at best, result in inconclusive data, and at worst, may be actively misleading. This paper reviews the principle behind each of the currently used methods and describes their capabilities and limitations as an aid to engineers and those concerned with selecting an appropriate method.
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Supplemental Notes:
- Full conference proceedings available on CD-ROM.
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Corporate Authors:
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Hertlein, B H
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Conference:
- Geophysics 2002. The 2nd Annual Conference on the Application of Geophysical and NDT Methodologies to Transportation Facilities and Infrastructure
- Location: Los Angeles, California
- Date: 2002-4-15 to 2002-4-19
- Publication Date: 2002
Language
- English
Media Info
- Pagination: 12p
Subject/Index Terms
- TRT Terms: Bridges; Dams; Foundations; Nondestructive tests; Saturated soils; Slurry; Underwater construction; Underwater foundations
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00926445
- Record Type: Publication
- Files: TRIS, USDOT
- Created Date: Jun 24 2002 12:00AM