Interface Direct Shear Tests on JEZ-1 Mars Regolith Simulant
| Autor: | Khaoula Othmani, Eugenia Di Filippo, Andreea-Roxana Vasilescu, Jiaxing Lin, Kexin Yin, Jiangxin Liu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science QH301-705.5 QC1-999 0211 other engineering and technologies 02 engineering and technology Surface finish 01 natural sciences friction angle 0103 physical sciences Cohesion (geology) General Materials Science Geotechnical engineering Mars Jezero Crater Delta simulant (JEZ-1) Biology (General) QD1-999 010303 astronomy & astrophysics Instrumentation 021101 geological & geomatics engineering Fluid Flow and Transfer Processes Physics Process Chemistry and Technology General Engineering Mars Exploration Program direct shear test Engineering (General). Civil engineering (General) Compression (physics) Regolith Oedometer test Computer Science Applications Chemistry soil-structure interface Martian regolith simulant compressibility Direct shear test TA1-2040 |
| Zdroj: | Applied Sciences Volume 11 Issue 15 Applied Sciences, Vol 11, Iss 7052, p 7052 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11157052 |
| Popis: | The mechanical behaviors of Martian regolith-structure interfaces are of great significance for the design of rover, development of excavation tools, and construction of infrastructure in Mars exploration. This paper presents an experimental investigation on the properties of a Martian regolith simulant (JEZ-1) through one-dimensional oedometer test, direct shear test, and interface direct shear tests between JEZ-1 and steel plates with different roughness. Oedometer result reveals that the compression and swelling indexes of the JEZ-1 are quite low, thus it is a less compressible and lower swelling soil. The cohesion and adhesion of JEZ-1 are lower than 5 kPa. The values of the internal friction angle range from 39.7° to 40.6°, and the interface friction angles are 16.7° to 36.2° for the smooth and rough interface. Furthermore, the direct shear and interface direct shear results indicate that the interface friction angles are lower than the internal friction angles of JEZ-1 and increase close to the internal friction angles with increasing interface roughness. |
| Databáze: | OpenAIRE |
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