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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.15 No.4
- 발행연도
- 2015.4
- 수록면
- 485 - 501 (17page)
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초록· 키워드
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Cooling by the flow of water through an embedded cooling pipe has become a common and effective artificial thermal control measure for massive concrete structures. However, an extreme thermal gradient induces significant thermal stress, resulting in thermal cracking. Using a mesoscopic finite-element (FE) mesh, three-phase composites of concrete namely aggregate, mortar matrix and interfacial transition zone (ITZ) are modeled. An equivalent probabilistic model is presented for failure study of concrete by assuming that the material properties conform to the Weibull distribution law. Meanwhile, the correlation coefficient introduced by the statistical method is incorporated into the Weibull distribution formula. Subsequently, a series of numerical analyses are used for investigating the influence of the correlation coefficient on tensile strength and the failure process of concrete based on the equivalent probabilistic model. Finally, as an engineering application, damage and failure behavior of concrete cracks induced by a water-cooling pipe are analyzed in-depth by the presented model. Results show that the random distribution of concrete mechanical parameters and the temperature gradient near water-cooling pipe have a significant influence on the pattern and failure progress of temperature-induced micro-cracking in concrete.
목차
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참고문헌 (28)
참고문헌 신청
Amin, M. N. / 2009 / Simulation of the thermal stress in mass concrete using a thermal stress measuring device / Cement Concrete Res. 39(3):154~164
Wittmann, F. H. / 1985 / Simulation and analysis of composite structures / Mater. Sci. Eng. 68(2):239~248
Yaşar, Ergül / 2004 / Effect of limestone aggregate type and water–cement ratio on concrete strength / Mater. letters 58(5):772~777
Elices, M. / 2008 / Effect of aggregate size on the fracture and mechanical properties of a simple concrete / Eng. Fract. Mech. 75(13):3839~3851
Rocco, C.G. / 2009 / Effect of aggregate shape on the mechanical properties of a simple concrete / Eng. Fract. Mech. 76(2):286~298
Wittmann, F. H. / 1985 / Simulation and analysis of composite structures / Mater. Sci. Eng. 68(2):239~248
Yaşar, Ergül / 2004 / Effect of limestone aggregate type and water–cement ratio on concrete strength / Mater. letters 58(5):772~777
Elices, M. / 2008 / Effect of aggregate size on the fracture and mechanical properties of a simple concrete / Eng. Fract. Mech. 75(13):3839~3851
Rocco, C.G. / 2009 / Effect of aggregate shape on the mechanical properties of a simple concrete / Eng. Fract. Mech. 76(2):286~298
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