지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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The rebound hammer test and the measurement of ultrasonic pulse velocity(UPV) have been widely used for the physical properties & condition evaluation of reinforced & prestressed concrete structures for a long time, but the acoustoelastic effects by the prestressing in the prestressed concrete structures on the rebound number and ultrasonic pulse velocity have not been studied clearly. Therefore, this study investigated the data distribution of the rebound numbers and ultrasonic pulse velocities in reinforced and prestressed concrete slabs of $3000{\times}3000mm$ with a thickness of 250 mm. Also, the Kolmogorov-Smirnov goodness-of-fit test was done in order to identify statistical consistency and reliability. The statistical analysis results show that the rebound number and ultrasonic pulse velocities increased about 1.9% and 2.5%, respectively when prestressing was applied. As expected, the UPV shows better statistical reliability and potential for in situ evaluation than the RB because the RB are more sensitive to testing posture, surface condition, temperature and humidity so on. The experimental data in this study can be used for the condition assessment of reinforced and prestressed concrete structures by the rebound number and ultrasonic pulse velocity.
목차
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참고문헌 (10)
참고문헌 신청
L. Binda / 1999 / NDE of Masonry Structures: use of Radar Tests for the Characterization of Stone Masonries / NDT&E International 31(6):411~419
R. A. Toupin / 1961 / Sound Waves in Deformed Perfectly Elastic Materials, Acoustoelastic Effect / Journal of Acoustical Society of America 33:216~225
V. M. Malhotra / 2004 / Handbook on Nondestructive Testing of Concrete / CRC Press
2013 / ASTM C805 / C805M-13a, Standard Test Method for Rebound Number of Hardened Concrete / ASTM International
RILEM CNDT-Committee / 1980 / RILEM Tentative Recommendations for In-situ Concrete Strength Determination by Non-Destructive Combined Methods
R. A. Toupin / 1961 / Sound Waves in Deformed Perfectly Elastic Materials, Acoustoelastic Effect / Journal of Acoustical Society of America 33:216~225
V. M. Malhotra / 2004 / Handbook on Nondestructive Testing of Concrete / CRC Press
2013 / ASTM C805 / C805M-13a, Standard Test Method for Rebound Number of Hardened Concrete / ASTM International
RILEM CNDT-Committee / 1980 / RILEM Tentative Recommendations for In-situ Concrete Strength Determination by Non-Destructive Combined Methods
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