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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.17 No.1
- 발행연도
- 2016.1
- 수록면
- 45 - 58 (14page)
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초록· 키워드
오류제보하기
Freezing and thawing cycles induce deterioration and strength degradation of concrete structures. This study presumes that a large quantity of contact-type defects develop due to the freezing and thawing cycles of concrete and evaluates the degree of defects based on a nonlinearity parameter. The nonlinearity parameter was obtained by an impact-modulation technique, one of the nonlinear ultrasonic methods. It is then used as an indicator of the degree of contact-type defects. Five types of damaged samples were fabricated according to different freezing and thawing cycles, and the occurrence of opening or cracks on a micro-scale was visually verified via scanning electron microscopy. Dynamic modulus and wave velocity were also measured for a sensitivity comparison with the obtained nonlinearity parameter. The possibility of evaluating strength degradation was also investigated based on a simple correlation of the experimental results.
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참고문헌 (34)
참고문헌 신청
1998 / ACI Committee 228, Nondestructive Test Methods for Evaluation of Concrete in Structures / America Concrete Institute
Antonets, V. / 1986 / Nonlinear vibro-diagnostics of flaws in multilayered structures / Mech. Compos. Mater 15(5):934~937
2001 / ASTM C 39-01, Standard test method for compressive strength of cylindrical concrete specimens / Annual Book of ASTM Standards, American Society for Testing and Materials (ASTM) International
2008 / ASTM C 215-08, Standard Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens / American Society for Testing and Materials (ASTM) International
2009 / ASTM C 597-09, Standard Test Method for Pulse Velocity Through Concrete / American Society for Testing and Materials (ASTM) International
Antonets, V. / 1986 / Nonlinear vibro-diagnostics of flaws in multilayered structures / Mech. Compos. Mater 15(5):934~937
2001 / ASTM C 39-01, Standard test method for compressive strength of cylindrical concrete specimens / Annual Book of ASTM Standards, American Society for Testing and Materials (ASTM) International
2008 / ASTM C 215-08, Standard Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens / American Society for Testing and Materials (ASTM) International
2009 / ASTM C 597-09, Standard Test Method for Pulse Velocity Through Concrete / American Society for Testing and Materials (ASTM) International
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