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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.15 No.6
- 발행연도
- 2021.11
- 수록면
- 799 - 814 (16page)
이용수
초록· 키워드
오류제보하기
The tensile strength of concrete has a great impact on the performance of concrete structures, especially for members exposed to high temperatures. The inclusion of steel fibers in concrete is one of the measures to retrieve the loss of tensile strength. The previous equations for the prediction of the tensile strength, are valid for conventional concrete and can predict the tensile strength after high-temperature exposure. Therefore, they are unsatisfactory for forecasting the tensile strength of plain and steel fiber reinforced concrete under high-temperature exposure. To establish a model that can effectively simulate the tensile strength of plain concrete, specimens with compressive strengths of 20-80 MPa are tested. Then by performing tensile strength tests on the specimens containing various content of steel fiber, an equation for prediction of the tensile strength at the ambient temperature is proposed. Meanwhile, the tensile strength tests are conducted at temperatures of 100-800 °C to develop a model for high-temperature exposure. The results indicate that an increase of compressive strength from 20 to 84 improves the tensile strength by 169.4%, and the incorporation of 0.25 and 0.5% of steel fibers can improve the tensile strength of normal concrete by 58.48 and 80.29% on average at the tested temperatures, respectively. Moreover, the proposed model is able to predict the tensile strength of normal and steel fiber reinforced concrete exposed to high temperatures accurately. This equation would help a wider application of the steel fibers in the construction industry with the risk of a fire accident.
목차
Abstract
1. Introduction
2. Experimental Work
3. Results and Discussion
4. Conclusions
References
참고문헌 (80)
참고문헌 신청
2012 / Standard practice for making and curing concrete test specimens in the laboratory / A. C192/C192M
1984 / A.C. 363. State-of-the-art Report on High-strength Concrete (ACI 363R-84) / American Concrete Institute
2005 / A. Guide, A. Manual, ACI 318, Building Code Requirements for Structural Concrete (ACI 318–05) and Commentary (ACI 318R-05), ACI Committee 318 / American Concrete Institute
Abaeian, R. / 2018 / Effects of high temperatures on mechanical behavior of high strength concrete reinforced with high performance synthetic macro polypropylene (HPP) Fibres / Elsevier Limited
Abbass, W. / 2018 / Evaluation of mechanical properties of steel fiber reinforced concrete with different strengths of concrete / Construction and Building Materials 168:556~569
1984 / A.C. 363. State-of-the-art Report on High-strength Concrete (ACI 363R-84) / American Concrete Institute
2005 / A. Guide, A. Manual, ACI 318, Building Code Requirements for Structural Concrete (ACI 318–05) and Commentary (ACI 318R-05), ACI Committee 318 / American Concrete Institute
Abaeian, R. / 2018 / Effects of high temperatures on mechanical behavior of high strength concrete reinforced with high performance synthetic macro polypropylene (HPP) Fibres / Elsevier Limited
Abbass, W. / 2018 / Evaluation of mechanical properties of steel fiber reinforced concrete with different strengths of concrete / Construction and Building Materials 168:556~569
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