Effect of artificial aggregate shapes on the porosity, tortuosity and permeability of their packings
| Autor: | Christoph R. Müller, Lily D. Poulikakos, Manfred N. Partl, Nicholas A. Conzelmann, Frank Clemens |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Materials science
Aggregate (composite) General Chemical Engineering 7. Clean energy 01 natural sciences Tortuosity 010305 fluids & plasmas Sphericity Permeability (earth sciences) 13. Climate action 0103 physical sciences Composite material 010306 general physics Porosity Artificial aggregates Aggregate shape Non-convex shapes Permeability Construction materials |
| Zdroj: | Powder Technology, 397 |
| ISSN: | 0032-5910 |
| Popis: | Natural aggregates such as gravel are used in many construction applications for which porous structures are needed, for example to allow water drainage. However, the range of attainable porosities is limited due to the ir regular shapes of natural aggregates. Here we investigate artificial aggregates of engineered shapes, which allow structures with porosities exceeding 0.7. In this study packings of a variety of artificial aggregate shapes are ex amined by both numerical and experimental techniques. We can establish a correlation between the porosity of a packing and the sphericity of the aggregates. Furthermore, we confirm that the Carman-Kozeny correlation can be used to predict accurately the permeability of a packing for a wide range of porosities (0.33–0.78). Establish ment of this basic relationship between the porosity and permeability of a packing is critical for the design of ar tificial aggregates for novel applications such as energy harvesting from pavements. ISSN:0032-5910 ISSN:1873-328X |
| Databáze: | OpenAIRE |
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