Abstract
An unidentified vehicle recently struck the bottom of a railroad overpass and damaged one of the concrete beams in the overpass. The damaged beam was taken intact to the University of Texas where the Spectral-Analysis-of-Surface-Waves (SASW) method was used to nondestructively delineate the damaged zones. SASW measurements performed on the beam revealed a significant velocity contrast between damaged and undamaged zones. These measurements were consistent with visual inspection of the beam and also indicated the presence of cracking that was not visibly detectable. In addition, SASW measurements taken while repairing the beam revealed how surface wave velocity measurements can be used to monitor improvements in the integrity of a beam after each repair step.
| Original language | English |
|---|---|
| Title of host publication | Innovations in Nondestructive Testing of Concrete |
| Editors | Stephen Pessiki, Larry Olson |
| Publisher | American Concrete Institute |
| Pages | 111-136 |
| Number of pages | 26 |
| ISBN (Electronic) | 9780870316678 |
| State | Published - Apr 1 1997 |
| Event | Innovations in Nondestructive Testing of Concrete at the 1995 ACI Fall Convention - Montreal, Canada Duration: Nov 5 1995 → Nov 10 1995 |
Publication series
| Name | American Concrete Institute, ACI Special Publication |
|---|---|
| Volume | SP-168 |
| ISSN (Print) | 0193-2527 |
Conference
| Conference | Innovations in Nondestructive Testing of Concrete at the 1995 ACI Fall Convention |
|---|---|
| Country/Territory | Canada |
| City | Montreal |
| Period | 11/5/95 → 11/10/95 |
Bibliographical note
Publisher Copyright:© 1997 American Concrete Institute. All rights reserved.
Keywords
- Damage
- Nondestructive tests
- Prestressed concrete
- Repairs
- Velocity
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- General Materials Science