Abstract
The Impact Echo (IE) test is a robust Non-destructive Test (NDT) method where the dynamic response of a target area results from an impact event to make decisions about the damage identification of concrete structures. However, the IE data over the near-surface delamination typically developed by rebar corrosion at the cover depth is not easy in interpreting because of the difficulties in the dynamic analysis of flexural modes over the defects as well as in the identification of weak and unclear signal of the high IE frequency corresponding to the delamination depth. The shallow delamination in the concrete structures must be clearly identified and interpreted such that infrastructure engineers can effectively check the condition of the structure. To address this problem, we proposed the combined dynamic characterization with both impact-echo and flexural modes in order to identify the area and degree of damage and applied this technique to the designated concrete slab and the simulated bridge deck with various artificial defects at the depth of rebar. The test results proved that the imaging technique by the combined mode associated with the IE and flexural modes is more effective and accurate for the detection of shallow defects in the concrete slab than one by the individual mode.
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References
Buyukozturk, O. (1998). “Imaging of concrete structures.” NDT & E International Journal, Vol. 31, pp. 233–243, DOI: 10.1016/S0963-8695(98)00012-7, DOI: 10.1016/S0963-8695(98)00012-7, DOI: 10.1016/S0963-8695(98)00012-7.
Fuchs, P. and Washer, G. (2004). “Infrared thermographic bridge deck inspection on the Poplar street bridge.” in St. Louis MO, Proc., 6th Structural Materials Technology Conf., ASNT Publishing, Columbus OH.
Gannon, E. J. and Cady, P. D. (1992). Condition Evaluation of Concrete Bridges Relative to Reinforcement Corrosion, Vol. 1: State of the Art of Existing Methods (Report No. SHRP-S/FR-92-103), Strategic Highway Research Program, Washington DC.
Hime, W. and Erlin, B. (1987). “Some chemical and physical aspects of phenomena associated with chloride-induced corrosion.” Corrosion, Concrete, and Chlorides–Steel Corrosion in Concrete: Causes and Restraints, SP-102, ACI, Detroit, MI, pp. 1-12
Huston, D., Gucunski, N., Maher, A., Cui, A. J., Burns, J. D., and Jalinoos, D. F. (2007). “Bridge deck condition assessment with electromagnetic, acoustic and automated methods.” In: Sixth international workshop on structural health monitoring, Stanford, CA, USA.
Johnson, K. L. (1985). Contact mechanics, Cambridge University Press.
Liu, P. L. and Yiu, C. Y. (2002). “Imaging of concrete defects using elastic wave tests.” the Far-East conference on nondestructive testing, Tokyo, Japan.
Moore, M., Phares, B. Graybeal, B., Rolander, D., and Washer, G. (2001). Reliability of visual inspection for highway bridges Vol. I: Final report, Technical Report FHWA-RD-01-020, US Department of Transportation Federal Highway Administration.
Oh, T., Kee, S., Popovics, J. S., Arndt, R. W., and Zhu, J. (2012). “Comparison of NDT methods for assessment of a concrete bridge deck.” ASCE Journal of Engineering Mechanics, Vol. 139, pp. 305–314, DOI: 10.1061/%28ASCE%29EM.1943-7889.0000441.
Oh, T., Popovics, J. S., and Sim, S. (2013a). “Analysis of vibration for regions above rectangular delamination defects in solids,” Journal of Sound and Vibration, Vol. 332, pp. 1766–1776, DOI: 10.1016/j.jsv.2012.11.003.
Oh, T., Popovics, J. S., Ham, S., and Shin, S. (2013b), “Improved interpretation of vibration responses from concrete delamination defects using air-coupled impact resonance tests.” ASCE Journal of Engineering Mechanics, Vol. 139, pp. 315–324, DOI: 10.1061/(ASCE)EM.1943-7889.0000491.
Oh, T. and Popovics, J. S. (2015a), “Practical visualization of local vibration data collected over large concrete elements.” Computer-Aided Civil and Infrastructure Engineering, Vol. 30, pp. 68–81, DOI: 10.1111/mice.12065/abstract.
Oh, T. and Popovics, J. S. (2015b). “Application of impact-resonance Cscan stack images to evaluate bridge deck condition.” ASCE Journal of Infrastructure Systems, Vol. 21, No. 1, pp. 21–26, DOI: 10.1061/(ASCE)IS.1943-555X.0000216.
Sansalone, M. J. and Streett, W. B. (1997). Impact-echo: Nondestructive evaluation for concrete and masonry, Bullbirer Press, Ithaca, N.Y.
Schubert, F., Wiggenhauser, H., and Lausch, R. (2004). “On the accuracy of thickness measurements in impact-echo testing of finite concrete specimens-numerical and experimental results.” Ultrasonics, Vol. 42, pp. 897–901, DOI: 10.1016/j.ultras.2004.01.076.
Zhu, J. and Popovics, J. S. (2001). “Non-contact detection of surface waves in concrete using an air-coupled sensor.” in Review of Progress in Quantitative Nondestructive Evaluation, 20B, edited by D.O. Thomson and D.E. Chimenti, AIP Conference Proceedings Vol. 615, American Institute of Physics, Melville, N.Y., pp. 1261–1268, DOI: 10.1063/1.1472940.
Zhu, J. and Popovics, J. S. (2007). “Imaging concrete structures using air-coupled impact-echo.” ASCE Journal of Engineering Mechanics, Vol. 133, pp. 628–640, DOI: 10.1061/(ASCE)0733-9399(2007)133:6(628).
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Lee, I., Kwon, SH., Park, J. et al. The effective near-surface defect identification by dynamic behavior associated with both impact-echo and flexural modes for concrete structures. KSCE J Civ Eng 22, 747–754 (2018). https://doi.org/10.1007/s12205-017-1433-9
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DOI: https://doi.org/10.1007/s12205-017-1433-9