Field Verification of Nondestructive Testing Technologies for Condition Assessment of Concrete Bridge Decks: A Case Study

To assess the condition and monitor the performance of reinforced concrete bridge decks, government agencies typically employ and rely mostly on basic non-destructive testing (NDT) methods such as visual inspection, chain drag, and hammer sounding. However, the accuracy and reliability of these methods rely on the inspector’s skills and experience and may produce variable results. In addition, surveys with traditional methods might only identify advanced stages of deterioration, such as concrete debonding or spalling. Due to the nature of such techniques, earlier stages or other forms of deterioration (i.e., rebar corrosion, cracking, and concrete degradation) cannot be determined. Rapid and accurate NDT methods have the potential to provide more in-depth condition assessment and performance monitoring of bridge decks while reducing dependency on the field operators’ judgment. The objective of this study was to identify and integrate several NDT technologies to detect and characterize deterioration of concrete bridge decks. This study presents the results of the integration and data fusion from multiple NDTs techniques for a comprehensive evaluation of a concrete bridge deck in Monmouth County, New Jersey. The bridge deck was investigated before a complete rehabilitation of the deck was carried out. Acoustic, electric, electromagnetic, and visual methods were used to detect and characterize deterioration and defects. NDT results were compared with visual inspection data (chain drag and hammer sounding) and exhibited excellent correlation. Correlation was further confirmed after removal of the deteriorated concrete with hydro-blasting exposing the actual areas requiring repair. It was concluded that integration of complementary NDT methods is effective and allows for a more accurate assessment of the condition of bridge decks. A better prediction of the deterioration progression and assessment of the rehabilitation needs is invaluable for bridge owners prior to the actual construction.

1. Gucunski, N., Imani, A., Romero, R., Nazarian, S., Yuan, D., Wiggenhauser, H., Shokouhi, P., Taffe, A., and Kutrubes, D., “Nondestructive Testing to Identify Concrete Bridge Deck Deterioration”. Strategic Highway Research Program (SHRP2) Report S2-R06A-RR-1. Transportation Research Board, 2012. 2. Parrillo, R. and Roberts, R., “Comparison of 2 GHz Horn Antenna and 1.5 GHz Ground-Coupled Antenna for Bridge Deck Condition Assessment Using GPR”. Geophysical Survey Systems Inc., North Salem, NH, 2005. 3. Romero, F.A., “Ground Penetrating Radar Demonstration on Route 378 Bridge over D&H Railroad and Route 66 Bridge over Kinderhook Creek”, New York State Department of Transportation, October 2003. 4. Romero, F.A., Roberts, G.E., and Roberts, R.L., “Evaluation of GPR Bridge Deck Survey Results Used for Delineation of Removal/maintenance Quantity Boundaries on Asphalt-overlaid, Reinforced Concrete Deck”. Structural Material Technology IV, February 28-March 3, 2000, Technomic Publishing Co, p. 23-30. 5. Maser, K. R., “Evaluation of bridge decks and pavements at highway speed using ground-penetrating radar”. Proceedings SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, 237 (May 19, 1995). Figure 13: Top view of bridge deck after hydro-blasting was conducted. 44 6. Maser, K. R., “Feasibility of Using Ground Penetrating Radar (GPR) for Pavements, Utilities, and Bridges” Report SD2005-05 prepared for the South Dakota Department of Transportation (August 2006). 7. Parrillo, R., Roberts, R. and Haggan, A. “Bridge Deck Condition Assessment using Ground Penetrating Radar”. 9th European Conference on NDT - September 2006 - Berlin (Germany). 8. Sansalone M.J. and Streett W.B., “Impact-Echo Nondestructive Evaluation of Concrete and Masonry”, Bullbrier Press, Ithaca, N.Y., 1997. 9. Celaya, M., Shokouhi, P. and Nazarian, S., “Assessment of Debonding in Concrete Slabs Using Seismic Methods”, Transportation Research Board. Journal of the Transportation Research Board No. 2016, pp 65-75, 2007. 10. Nazarian, S., Yuan, D., Tandon, V., and Arellano, M., (2004) “Quality Management of Flexible Pavement Layers with Seismic Methods,” Research Report 1735-3, Center for Transportation Infrastructure Systems, UTEP, El Paso, TX, 120 p. 11. Nazarian, S., Yuan, D., Smith, K., Ansari, F., Gonzalez, C., “Acceptance Criteria of Airfield Concrete Pavement Using Seismic and Maturity Concepts. “Innovative Pavement Research Foundation, Airport Concrete Pavement Technology Program. Report IPRF-01-G-002-02-2, May 2006.
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