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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.9
- 수록면
- 193 - 200 (8page)
이용수
초록· 키워드
오류제보하기
The purpose of this study is to evaluate the homogeneity of concrete based on its microstructure by measuring random scattering waves and calculating a heterogeneity index for analysis. Concrete exposed to high temperatures was used as a factor degrading the internal homogeneity of concrete, and experiments were conducted on both standard concrete and various types of fiber-reinforced concrete to verify the applicability of the process used to quantify heterogeneity. The method used to analyze internal homogeneity involves calculating a heterogeneity index based on the peak amplitude differences of the random scattering waves. The experiment was conducted on test specimens consisting of standard concrete and nine mixes with four types of fibers (Carbon, Jute, Glass, Steel) mixed at 0.5% and 1% respectively. The exposure temperatures were set at 200°C, 500°C, and 800°C to analyze the changes in homogeneity due to temperature exposure and fiber reinforcement through experimental research. The results indicate that the changes in homogeneity due to fiber reinforcement, as calculated by the algorithm used in this study, were not sensitive, and no clear relationship between homogeneity and strength was observed. While no clear relationship between homogeneity and strength was observed up to 500°C, a significant relationship was noted at 800°C. This suggests that while the algorithm used in this study has difficulty detecting microstructural changes occurring at exposure temperatures up to 500°C, it can detect changes at 800°C.
목차
Abstract
1. 서론
2. 균질도 분석법
3. 실험계획
4. 실험결과 분석
5. 결론
REFERENCES
참고문헌 (23)
참고문헌 신청
Abbas, A. A. (2013). The effect of steel fiber on some mechanical properties of self compacting concrete. American Journal of civil engineering, 1(3), 102-110.
Ahmad, J., González-Lezcano, R. A., Majdi, A., Ben Kahla, N., Deifalla, A. F., & El-Shorbagy, M. A. (2022). Glass fibers reinforced concrete: Overview on mechanical, durability and microstructure analysis. Materials, 15(15), 5111.
Ahn, E., Shin, M., & Popovics, J. S. (2022). Air-coupled ultrasonic diffuse-wave techniques to evaluate distributed cracking damage in concrete. Ultrasonics, 125, 106800.
Ham, S., Song, H., Oelze, M. L., & Popovics, J. S. (2017). A contactless ultrasonic surface wave approach to characterize distributed cracking damage in concrete. Ultrasonics, 75, 46-57.
Hedjazi, S., & Castillo, D. (2020). Relationships among compressive strength and UPV of concrete reinforced with different types of fibers. Heliyon, 6(3).
Ahmad, J., González-Lezcano, R. A., Majdi, A., Ben Kahla, N., Deifalla, A. F., & El-Shorbagy, M. A. (2022). Glass fibers reinforced concrete: Overview on mechanical, durability and microstructure analysis. Materials, 15(15), 5111.
Ahn, E., Shin, M., & Popovics, J. S. (2022). Air-coupled ultrasonic diffuse-wave techniques to evaluate distributed cracking damage in concrete. Ultrasonics, 125, 106800.
Ham, S., Song, H., Oelze, M. L., & Popovics, J. S. (2017). A contactless ultrasonic surface wave approach to characterize distributed cracking damage in concrete. Ultrasonics, 75, 46-57.
Hedjazi, S., & Castillo, D. (2020). Relationships among compressive strength and UPV of concrete reinforced with different types of fibers. Heliyon, 6(3).
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