Experimental Investigation on Crushing of Granular Material in One-Dimensional Test
| Autor: | Akie Izumi, Haruyuki Yamamoto, Yang Wu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
0211 other engineering and technologies 02 engineering and technology Geotechnical Engineering and Engineering Geology Compression (physics) Granular material Stress (mechanics) Lateral earth pressure 021105 building & construction Particle-size distribution Compressibility Axial load Mohs scale of mineral hardness Composite material 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Periodica Polytechnica Civil Engineering. 60:27-36 |
| ISSN: | 1587-3773 0553-6626 |
| DOI: | 10.3311/ppci.8028 |
| Popis: | A series of one-dimensional compression tests have been carried out on three kinds of granular materials in a dense state to investigate their mechanical and crushing behaviours. A new testing apparatus that can simultaneously measure the axial and lateral stresses acted on the cylindrical specimen was also developed. Experimental results show that the break-point stress on e – log p curve is the largest for glass beads ballotini. A rise in compression index with the increasing axial load is observed for all three granular materials. The lateral earth pressure coefficient at rest Ko for the three granular materials slightly increases with the increasing axial load and attains a steady value between 0.25 and 0.3 at the initial loading stage. The value for Ko markedly increases as the axial load is removed during the unloading process. The axial strain of Masado is the largest at the same axial load level due to its mineral hardness. Experimental results demonstrate that the crushing degree of granular material is greatly influenced by the loading modes and conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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