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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.22 No.5
- 발행연도
- 2018.1
- 수록면
- 469 - 479 (11page)
이용수
초록· 키워드
오류제보하기
The Brazilian tensile strength of concrete samples is a key parameter in fracture mechanics since it may significantly change the quality of concrete materials and their mechanical behaviors. It is well known that porosity is one of the most often used physical indices to predict concrete mechanical properties. In the present work the influence of porosity shape on concrete tensile strength characteristics is studied, using a bonded particle model. Firstly numerical model was calibrated by Brazilian experimental results and uniaxial test out puts. Secondly, Brazilian models consisting various pore shapes were simulated and numerically tested at a constant speed of 0.016 mm/s. The results show that pore shape has important effects on the failure pattern. It is shown that the pore shape may play an important role in the cracks initiation and propagation during the loading process which in turn influence on the tensile strength of the concrete samples. It has also been shown that the pore size mainly affects the ratio of uniaxial compressive strength to that of the tensile one in the simulated material samples.
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참고문헌 (73)
참고문헌 신청
Al-Harthi, A.A / 1999 / The porosity and engineering properties of vesicular basalt in Saudi Arabia / Eng. Geol 54:313~320
Ashby, M.F / 1990 / The damage mechanics of brittle solids in compression / Pure Appl. Geophys 133:489~521
Baud, P / 2014 / Effects of porosity and crack density on the compressive strength of rocks / Int. J. Rock Mech. Min. Sci 67:202~211
Bourbié, T / 1985 / Hydraulic and acoustic properties as a function of porosity in Fontainebleau Sandstone / J. Geophys. Res. : Solid Earth 90:11524~11532
Bubeck, A / 2017 / Pore geometry as a control on rock strength / Earth Planet. Sci. Lett 457:38~48
Ashby, M.F / 1990 / The damage mechanics of brittle solids in compression / Pure Appl. Geophys 133:489~521
Baud, P / 2014 / Effects of porosity and crack density on the compressive strength of rocks / Int. J. Rock Mech. Min. Sci 67:202~211
Bourbié, T / 1985 / Hydraulic and acoustic properties as a function of porosity in Fontainebleau Sandstone / J. Geophys. Res. : Solid Earth 90:11524~11532
Bubeck, A / 2017 / Pore geometry as a control on rock strength / Earth Planet. Sci. Lett 457:38~48
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