| Title | Nondestructive Inspection Protocol for Reinforced Concrete Barriers [Tech Brief] |
|---|---|
| Record ID | 61569 |
| Corporate Creator | United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center |
| Corporate Contributor |
United States. Federal Highway Administration |
| Publisher | United States. Federal Highway Administration |
| Publication Date | 20140901 |
| Language | English |
| Abstract | Reinforced concrete barriers are generally anchored to the deck of a bridge or retaining wall using reinforcing steel protruding from the main structure or by anchored bars or bolts added during retrofits. Corrosion of steel bars or bolts can weaken this attachment and reduce the capacity of the barrier. Anchorages and adjacent voids are typically embedded in concrete structural elements and consequently cannot be fully inspected visually. Research has been done on nondestructive evaluation (NDE) methods to evaluate reinforced concrete and embedded steel reinforcement. Four NDE technologies were examined and tested in this project, and the results of those test are reviewed and summarized in this document. The four NDE technologies considered in this project were ground-penetrating radar (GPR), low-frequency ultrasonic tomography, infrared (IR) thermography, and digital radiography. |
| Rosap ID | dot:35942 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/35942 |
| TRT Terms | Traffic barriers; Corrosion; Ground penetrating radar; Nondestructive tests; Radiography; Reinforced concrete; Reinforcing steel; Structural health monitoring; Thermal imagery; Tomography |
| Classification | NTL - HIGHWAY/ROAD TRANSPORTATION - Bridges and Structures; NTL - HIGHWAY/ROAD TRANSPORTATION - HIGHWAY/ROAD TRANSPORTATION |
| Geographical Coverage |
North America |
| TRIS Online Accession No |
1548580 |
| Report Number | FHWA-HRT-14-071 |
| Availability | Federal Highway Administration |
| Resource type | Brief |
| URL | https://ntlrepository.blob.core.windows.net/lib/61000/61500/61569/14071.pdf |
| Alternative URL | https://www.fhwa.dot.gov/publications/research/infrastructure/structures/14071/14071.pdf |
| Format | |
| Database | NTL Digital Repository |