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EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF CONCRETE BEHAVIOUR AT MESO-LEVEL DURING QUASI-STATIC SPLITTING TENSION
Abstract
The paper describes experimental and numerical results of quasi-static splitting tensile tests on concrete specimens at meso-scale level. The loading strip was made of plywood or steel. Fracture in concrete was detected at the aggregate level by means of three non-destructive methods: 3D x-ray micro-computed tomography, 2D scanning electron microscope and manual 2D digital microscope. The discrete element method was used to directly simulate experiments at the meso-scale. Concrete was modelled as a random heterogeneous 4-phase material composed of aggregate particles, cement matrix, interfacial transitional zones and macro-voids based on micro-tomographic images. Two-dimensional calculations with real concrete microstructure were carried out. A satisfactory agreement between numerical and experimental results was achieved. The evolution of contact normal forces, coordination number, broken contacts, grain rotations and crack displacements was also investigated. In addition, each energy component was calculated and analyzed at a different stress-displacement stage.
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- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- 5 International Conference on particle-based methods. Fundamentals and Applications PARTICLES2017 strony 285 - 296
- Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Suchorzewski J., Tejchman-Konarzewski A..: EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF CONCRETE BEHAVIOUR AT MESO-LEVEL DURING QUASI-STATIC SPLITTING TENSION, W: 5 International Conference on particle-based methods. Fundamentals and Applications PARTICLES2017, 2017, International Center for Numerical Methods in Engineering (CIMNE),.
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.tafmec.2017.10.011
- Bibliography: test
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- Tejchman, J. and Bobiński, J. Continuous and discontinuous modeling of fracture in concrete using FEM. Springer, Berlin-Heidelberg (eds. W. Wu and R. I. Borja), 2013. open in new tab
- Skarżyński L. and Tejchman J. Experimental investigations of fracture process in concrete by means of x-ray micro-computed tomography. Strain (2016) 52:26-45. open in new tab
- Skarzynski, L. Nitka, M. and Tejchman, J. Modelling of concrete fracture at aggregate level using FEM and DEM based on X-ray CT images of internal structure. Engineering Fracture Mechanics (2015) 147:13-35. open in new tab
- Suchorzewski, J. Tejchman, J. and Nitka M. Discrete element method simulations of fracture in concrete under uniaxial compression based on its real internal structure. International Journal of Damage Mechanics (2017) 3:. DOI: 10.1177/1056789517690915. open in new tab
- ASTM, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens, C496M-04, 2004. open in new tab
- Kozicki, J. and Donze, F.V. A new open-source software developer for numerical simulations using discrete modeling methods. Computer Methods in Applied Mechanics and Engineering (2008) 197:4429-4443. open in new tab
- Nitka, M. Tejchman. J. Modelling of concrete behaviour in uniaxial compression and tension with DEM. Granular Matter (2015) 17(1): 145-164. open in new tab
- Verified by:
- Gdańsk University of Technology
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