01473550

Component

This paper presents technologies used for condition assessment of bare concrete decks and asphalt overlaid decks. The study was funded by the NCHRP-IDEA (National Cooperative Highways Research Program – Innovations Deserving Exploratory Analysis) program. The objective of the research and development was to develop a faster, more accurate technology to determine internal conditions of bridge decks. A Bridge Deck Scanner (BDS) prototype with a pair of transducer wheels was originally developed. Later the BDS system was expanded as part of a SHRP 2 R06 (D) research project for asphalt pavement delamination (NCAT study at Auburn University) so that up to three pairs of transducer wheels could be added to the system for more rapid testing. The BDS system can be set to perform either Impact Echo Scanning on all wheels for condition assessment of bare concrete decks or simultaneously perform Impact Echo Scanning and Spectral Analysis of Surface Waves Scanning for condition assessment of concrete decks underneath overlays such as asphalt. In this paper, two case studies are presented (one from a bare concrete deck and one from an asphalt overlaid deck) in which comparison/ground-truthing techniques (sounding, coring, hydro-blasting, etc.) were employed along with BDS results.

This paper was sponsored by TRB committee AFF40 Field Testing and Nondestructive Evaluation (NDE) of Transportation Structures.

01470560

13-2043

English

13p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; Photos; References

Bridge decks; Case studies; Condition surveys; Inspection equipment; Nondestructive tests; Prototypes; Scanners; Spectrum analysis

Impact echo tests

Bridges and other structures; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2013 Paper #13-2043

TRIS, TRB, ATRI

Feb 5 2013 12:28PM