콘크리트 구조물 비파괴 평가를 위한 수정 충격반향 기법의 제안 = Modified Impact-Echo (ModIE) Method for the Intergrity Assessment of Concrete Structures

다국어 초록 (Multilingual Abstract)

The techniques to make assessment of the structural integrity of concrete structures include infrared thermagraphy, GPR using the reflection of the electromagnetic wave, ultrasonic test, seismic methods using the propagation of elastic wave, and etc. These method alone is not enough to evaluate parameters required for the assessment. In this study, a new seismic method was proposed to improve the existing methods and to provide and additional information like stiffness of concrete. The proposed method comes from the improvement of the impact echo test, and is called the modified impact echo method (ModIE). To verify the validity of the proposed method, a large scale model of a tunnel concrete liner was built and the proposed method was applied to the center of the model and also to the corner of the model which has several distinct reflection boundaries.

목차 (Table of Contents)

• 1.서론
• 2.충격반향기법 (Impact-Echo Method)
• 2.1개요
• 3.수정충격반향기법의 제안
• 3.1 개요
• 3.2 수정충격반향기법(ModlE)의 알고리즘
• 3.3 충격반향기법과의 비교
• 4.수정충격반향기법의 검증
• 4.1 콘크리트 슬라브의 실대형 모형
• 4.2 콘크리트 매질의 P-파 속도 결정
• 4.3 수정충격반향기법의 실험 및 결과
• 5.결론