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논문 기본 정보

자료유형
학술저널
저자정보
Héctor Cifuentes (University of Seville) Miguel Lozano (University of Oviedo) Táňa Holušová (Academy of Sciences) Fernando Medina (University of Seville) Stanislav Seitl (Academy of Sciences) Alfonso Ferna´ndez-Canteli (University of Oviedo)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.11 No.2
발행연도
2017.6
수록면
215 - 228 (14page)

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초록· 키워드

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A new approach for measuring the specific fracture energy of concrete denoted modified disk-shaped compact tension (MDCT) test is presented. The procedure is based on previous ideas regarding the use of compact tension specimens for studying the fracture behavior of concrete but implies significantmodifications of the specimen morphology in order to avoid premature failures (such as the breakage of concrete around the pulling load holes). The manufacturing and test performance is improved and simplified, enhancing the reliability of the material characterization. MDCTspecimens are particularly suitable when fracture properties of already casted concrete structures are required. To evaluate the applicability of theMDCT test to estimate the size-independent specific fracture energy of concrete (G<SUB>F</SUB>), the interaction between the fracture process zone of concrete and the boundary of theMDCTspecimens at the end of the test is properly analyzed. Further, the experimental results of G<SUB>F</SUB> obtained by MDCT tests for normal- and high-strength selfcompacting concrete mixes are compared with those obtained using the well-established three-point bending test. The procedure proposed furnishes promising results, and the G<SUB>F</SUB> values obtained are reliable enough for the specimen size range studied in this work.

목차

Abstract
1. Introduction
2. Background : Determination of the Size-Independent Specific Fracture Energy of Concrete
3. Description of the MCT Specimens and Test
4. Experimental Program
5. Results
6. Analysis of Results
7. Conclusions
References

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