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Smart Structures and Systems Volume 23, Number 5, May 2019 , pages 479-493 DOI: https://doi.org/10.12989/sss.2019.23.5.479 |
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Experimental and numerical studies of the pre-existing cracks and pores interaction in concrete specimens under compression |
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Hadi Haeri, Vahab Sarfarazi, Zheming Zhu and Mohammad Fatehi Marji
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| Abstract | ||
| In this paper, the interaction between notch and micro pore under uniaxial compression has been performed experimentally and numerically. Firstly calibration of PFC2D was performed using Brazilian tensile strength, uniaxial tensile strength and biaxial tensile strength. Secondly uniaxial compression test consisting internal notch and micro pore was performed experimentally and numerically. 9 models consisting notch and micro pore were built, experimentally and numerically. Dimension of these models are 10 cm 10 cm 5 cm. the length of joint is 2 cm. the angularities of joint are 30, 45 and 60. For each joint angularity, micro pore was situated 2cm above the lower tip of the joint, 2 cm above the middle of the joint and 2 cm above the upper of the joint, separately. Dimension of numerical models are 5.4 cm 10.8 cm. The size of the cracks was 2 cm and its orientation was 30, 45 and 60. Diameter of pore was 1cm which situated at the upper of the notch i.e., 2 cm above the upper notch tip, 2 cm above the middle of the notch and 2 cm above the lower of the notch tip. The results show that failure pattern was affected by notch orientation and pore position while uniaxial compressive strength is affected by failure pattern. | ||
| Key Words | ||
| experimental tests; notch and micro pore interaction; bonded particle method; discrete element method | ||
| Address | ||
| Hadi Haeri, Zheming Zhu: MOE Key Laboratory of Deep Underground Science and Engineering, School of Architecture and Environment,Sichuan University, Chengdu 610065, China Vahab Sarfarazi: Department of Mining Engineering, Hamedan University of Technology, Hamedan, Iran Mohammad Fatehi Marji: Department of Mining Engineering, Yazd University, Yazd, Iran | ||