NEW WAVE PROPAGATION DEVICES FOR NONDESTRUCTIVE TESTING OF PAVEMENTS AND BRIDGE DECKS
The Seismic Pavement Analyzer (patent pending) is a new nondestructive testing device that can help the maintenance and design engineers in pavement evaluation. The device was developed under the Strategic Highway Research Program. Several seismic testing techniques are combined; Ultrasonic Body Wave, Ultrasonic Surface Wave, Impulse Response, Spectral Analysis of Surface Waves (SASW), and Impact Echo. With these methods eight pavement parameters are measured (including moduli of each layer). The operation of the system has been automated to make it quite simple. Most of the data reduction is done rapidly in the field, and the results are saved in a database for later analysis. A portable version of the SPA has also been developed. Extensive field testing on many types of base and subgrade and bridge decks document the techniques suitability of the two devices and the techniques in general for many quality control and diagnostic projects.
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Corporate Authors:
Technomic Publishing Company, Incorporated
851 New Holland Avenue, Box 3535
Lancaster, PA United States 17604 -
Authors:
- Nazarian, S
- Baker, M
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Conference:
- Structural Materials Technology. An NDT Conference.
- Location: San Diego, CA
- Date: 1996-2-20 to 1996-2-23
- Publication Date: 1996
Language
- English
Media Info
- Features: Figures; References;
- Pagination: p. 363-368
Subject/Index Terms
- TRT Terms: Analysis; Base course (Pavements); Bridge decks; Data reduction; Diagnostic tests; Equipment; Impact; Impulses (Mechanics); Nondestructive tests; Pavements; Portable equipment; Quality control; Rayleigh waves; Seismicity; Spectrum analysis; Subgrade (Pavements); Ultrasonics; Wave motion
- Candidate Terms: Impact echo tests; Spectral analysis of surface waves
- Identifier Terms: Strategic Highway Research Program
- Uncontrolled Terms: Base; Diagnostics; Parameters
- Old TRIS Terms: Impulses
- Subject Areas: Bridges and other structures; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00725904
- Record Type: Publication
- Files: TRIS
- Created Date: Sep 16 1996 12:00AM