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Title |
Inspection of A Deteriorated Bridge Pier Cap Using Common Nondestructive and Destructive Test
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Keywords |
해머 사운딩 ; 비파괴 시험 ; 슈미트 해머 ; 토모그래피 ; 초음파 속도 ; Hammer sounding ; Nondestructive testing ; Schmidt hammer ; Tomography ; Ultrasonic pulse velocity |
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Abstract |
Nondestructive testing techniques have been historically and commonly used to evaluate the quality of existing concrete structures. The techniques utilized included visual inspection, hammer sounding, Schmidt hammer rebounding, and ultrasonic pulse velocity testing including tomographic imaging. Results of the nondestructive tests were used to determine areas to be tested with local destructive tests. These tests included concrete compressive strengths, chloride testing, and petrographic testing. The overall results indicate that inside core of each of the pier caps are healthy. On all of the pier caps, extensive exterior concrete layer rehabilitation needs to be completed. This paper shows the application and interpretation of common nondestructive testing techniques and the consequent repair, rehabilitation, maintenance decisions and safety assesment.
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