On the Shape Simulation of Aggregate and Cement Particles in a DEM System
Aggregate occupies at least three-quarters of the volume of concrete, so its impact on concrete’s properties is significant. Both size and shape of aggregate influence workability, mechanical properties, and durability of concrete. On the other hand, the shape of cement particles plays also an impor...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/692768 |
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| _version_ | 1832545616859758592 |
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| author | Huan He Piet Stroeven Eric Pirard Luc Courard |
| author_facet | Huan He Piet Stroeven Eric Pirard Luc Courard |
| author_sort | Huan He |
| collection | DOAJ |
| description | Aggregate occupies at least three-quarters of the volume of concrete, so its impact on concrete’s properties is significant. Both size and shape of aggregate influence workability, mechanical properties, and durability of concrete. On the other hand, the shape of cement particles plays also an important role in the hydration process due to surface dissolution in the hardening process. Additionally, grain dispersion, shape, and size govern the pore percolation process that is of crucial importance for concrete durability. Discrete element modeling (DEM) is commonly employed for simulation of concrete structure. To be able to do so, the assessed grain shape should be implemented. The approaches for aggregate and cement structure simulation by a concurrent algorithm-based DEM system are discussed in this paper. Both aggregate and cement grains were experimentally analyzed by X-ray tomography method recently. The results provide a real experimental database, for example, surface area versus volume distribution, for simulation of particles in concrete technology. Optimum solutions are obtained by different simplified shapes proposed for aggregate and cement, respectively. In this way, more reliable concepts for aggregate structure and fresh cement paste can be simulated by a DEM system. |
| format | Article |
| id | doaj-art-f8a95c1663054df9b7e2241181ae8e41 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f8a95c1663054df9b7e2241181ae8e412025-02-03T07:25:25ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/692768692768On the Shape Simulation of Aggregate and Cement Particles in a DEM SystemHuan He0Piet Stroeven1Eric Pirard2Luc Courard3College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100122, ChinaFaculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, NetherlandsGeMMe (Minerals Engineering, Materials and Environment), University of Liège, Chemin des Chevreuils 1, 4000 Liège, BelgiumGeMMe (Minerals Engineering, Materials and Environment), University of Liège, Chemin des Chevreuils 1, 4000 Liège, BelgiumAggregate occupies at least three-quarters of the volume of concrete, so its impact on concrete’s properties is significant. Both size and shape of aggregate influence workability, mechanical properties, and durability of concrete. On the other hand, the shape of cement particles plays also an important role in the hydration process due to surface dissolution in the hardening process. Additionally, grain dispersion, shape, and size govern the pore percolation process that is of crucial importance for concrete durability. Discrete element modeling (DEM) is commonly employed for simulation of concrete structure. To be able to do so, the assessed grain shape should be implemented. The approaches for aggregate and cement structure simulation by a concurrent algorithm-based DEM system are discussed in this paper. Both aggregate and cement grains were experimentally analyzed by X-ray tomography method recently. The results provide a real experimental database, for example, surface area versus volume distribution, for simulation of particles in concrete technology. Optimum solutions are obtained by different simplified shapes proposed for aggregate and cement, respectively. In this way, more reliable concepts for aggregate structure and fresh cement paste can be simulated by a DEM system.http://dx.doi.org/10.1155/2015/692768 |
| spellingShingle | Huan He Piet Stroeven Eric Pirard Luc Courard On the Shape Simulation of Aggregate and Cement Particles in a DEM System Advances in Materials Science and Engineering |
| title | On the Shape Simulation of Aggregate and Cement Particles in a DEM System |
| title_full | On the Shape Simulation of Aggregate and Cement Particles in a DEM System |
| title_fullStr | On the Shape Simulation of Aggregate and Cement Particles in a DEM System |
| title_full_unstemmed | On the Shape Simulation of Aggregate and Cement Particles in a DEM System |
| title_short | On the Shape Simulation of Aggregate and Cement Particles in a DEM System |
| title_sort | on the shape simulation of aggregate and cement particles in a dem system |
| url | http://dx.doi.org/10.1155/2015/692768 |
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