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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.11 No.3
- 발행연도
- 2017.9
- 수록면
- 447 - 457 (11page)
이용수
초록· 키워드
오류제보하기
Fire damage to concrete causes contact-type defects that degrade its durability through impaired mechanical properties. Various nondestructive tests are used to evaluate defects induced by fire damage. Recently, nonlinear ultrasonic methods such as the nonlinear resonance vibration method and nonlinear modulation method have been introduced. These nonlinear methods are more sensitive to fire-induced contact-type defects than the linear ultrasonic method. This study involved an experimental analysis of the residual material properties of fire-damaged concrete, specifically, compressive strength, splitting tensile strength, and static elastic modulus. The residual material properties of 116 cylindrical concrete samples with various mix proportions and subjected to various heating temperatures were measured by a destructive method, and their nonlinearity parameters were measured by two nonlinear ultrasonic methods. Through regression analysis, correlated relationships that can facilitate the prediction of residual material properties of fire-damaged concrete using measured nonlinearity parameters were identified. In addition, the effect of fire damage on the mechanical strength of concrete was investigated by comparison with the relationships for undamaged concrete, and relationships for the evaluation of fire-damaged concrete were identified through regression analysis.
목차
Abstract
1. Introduction
2. Sample Preparation: Fire-Damaged Concrete
3. Nonlinear Ultrasonic Methods
4. Mechanical Strength Measurements
5. Results and Discussion
6. Conclusion
References
참고문헌 (34)
참고문헌 신청
Al-Nimry, H. S., & Ghanem, A. M. (2017). FRP confinement of heat-damaged circular RC columns. Int. J. Concr. Struct. Mater., 11, 115?133.
ASTM. (2001). ASTM C39: Standard test method for compressive strength of cylindrical concrete specimens. West Conshohocken, PA, USA: ASTM Int.
ASTM. (2011). ASTM C 496 M-11: Standard test method for splitting tensile strength of cylindrical concrete specimens. West Conshohocken, PA, USA: ASTM Int.
Bazant, Z. P., & Kaplan, M. F. (1996). Concrete at high temperatures: material properties and mathematical models. Harlow: Longman.
Chaix, J. F., Garnier, V., & Corneloup, G. (2003). Concrete damage evolution analysis by backscattered ultrasonic waves. NDT E Int., 36(7), 461?469.
Chaix, J. F., Garnier, V., & Corneloup, G. (2003). Concrete damage evolution analysis by backscattered ultrasonic waves. NDT E Int., 36(7), 461?469.
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UCI(KEPA) : I410-ECN-0101-2018-532-001249687