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Title |
Evaluation of Shear Friction Stress-Slip Relationship at Concrete Brick and Mortar Interfaces
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Authors |
이용제(Yongjei Lee) ; 양근혁(Keun-Hyeok Yang) ; 황용하(Yong-Ha Hwang) |
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DOI |
https://doi.org/10.4334/JKCI.2019.31.1.021 |
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Keywords |
콘크리트 벽돌 ; 전단마찰 ; 미끄러짐 ; 점착력 ; 마찰각 concrete brick ; shear friction ; slip ; cohesion ; friction angle |
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Abstract |
Shear friction stress-slip relationship of masonry element interfaces of concrete brick and mortar was experimentally evaluated and generalized on the basis of the Coulomb failure criteria and test results. The main parameters investigated were the compressive strength of mortars and applied normal stresses in compression. The shear friction stress-slip curve of masonry elements was insignificantly affected by the compressive strength of mortars, whereas the shear friction strength and slip amount at the peak strength tended to increase with the increase in the applied compressive stresses. From the measured shear friction strength, the cohesion and friction angle at the interfaces of masonry elements could be fitted at 0.5 MPa and 31.4°, respectively. The proposed model exhibited a reasonable agreement with test results; as a result, it has great potential to be applied as a fundamental reference for nonlinear finite element analysis to assess the structural performance of masonry walls.
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