Effects of granular shape on shear modulus and damping ratio of gravel
The effects of the consolidation ratio, effective confining pressure, gravel content, and granule breakage on the shear modulus and damping ratio of gravel have been extensively researched in recent years. However, studies on the effect of the granular shape are rare. Thus, under different confining...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2019-01-01
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| Series: | Earth Sciences Research Journal |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/esrj/article/view/78727 |
| _version_ | 1818608906824318976 |
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| author | Kai Cui Hang Sheng |
| author_facet | Kai Cui Hang Sheng |
| author_sort | Kai Cui |
| collection | DOAJ |
| description | The effects of the consolidation ratio, effective confining pressure, gravel content, and granule breakage on the shear modulus and damping ratio of gravel have been extensively researched in recent years. However, studies on the effect of the granular shape are rare. Thus, under different confining pressures, dynamic triaxial tests were performed on gravel specimens to investigate the effect of granular shape on the shear modulus and damping ratio of gravel specimens by using a multifunctional triaxial testing instrument. The samples consisted of two kinds of gravel with the same grain composition and relative density of 45%. The test results indicate that, when the confining pressure and shear strain amplitude exceed 300 kPa and 7×10-4, respectively, gravel with a round granular shape has a higher shear modulus compared to an angular shape. Conversely, when the shear strain amplitude exceeds 2×10-4, the damping ratio of angular gravel exceeds that of round granules. |
| first_indexed | 2024-12-16T14:50:06Z |
| format | Article |
| id | doaj.art-c2f7f70d8ce247e29a9f2226767b1de6 |
| institution | Directory Open Access Journal |
| issn | 1794-6190 |
| language | English |
| last_indexed | 2024-12-16T14:50:06Z |
| publishDate | 2019-01-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Earth Sciences Research Journal |
| spelling | doaj.art-c2f7f70d8ce247e29a9f2226767b1de62022-12-21T22:27:38ZengUniversidad Nacional de ColombiaEarth Sciences Research Journal1794-61902019-01-01231879110.15446/esrj.v23n1.7872750697Effects of granular shape on shear modulus and damping ratio of gravelKai Cui0Hang Sheng1Department Key Laboratory of High-speed Railway Engineering of the Ministry of Education, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong University, ChengduThe effects of the consolidation ratio, effective confining pressure, gravel content, and granule breakage on the shear modulus and damping ratio of gravel have been extensively researched in recent years. However, studies on the effect of the granular shape are rare. Thus, under different confining pressures, dynamic triaxial tests were performed on gravel specimens to investigate the effect of granular shape on the shear modulus and damping ratio of gravel specimens by using a multifunctional triaxial testing instrument. The samples consisted of two kinds of gravel with the same grain composition and relative density of 45%. The test results indicate that, when the confining pressure and shear strain amplitude exceed 300 kPa and 7×10-4, respectively, gravel with a round granular shape has a higher shear modulus compared to an angular shape. Conversely, when the shear strain amplitude exceeds 2×10-4, the damping ratio of angular gravel exceeds that of round granules.https://revistas.unal.edu.co/index.php/esrj/article/view/78727gravelgranule shapeshear modulusdamping ratio |
| spellingShingle | Kai Cui Hang Sheng Effects of granular shape on shear modulus and damping ratio of gravel Earth Sciences Research Journal gravel granule shape shear modulus damping ratio |
| title | Effects of granular shape on shear modulus and damping ratio of gravel |
| title_full | Effects of granular shape on shear modulus and damping ratio of gravel |
| title_fullStr | Effects of granular shape on shear modulus and damping ratio of gravel |
| title_full_unstemmed | Effects of granular shape on shear modulus and damping ratio of gravel |
| title_short | Effects of granular shape on shear modulus and damping ratio of gravel |
| title_sort | effects of granular shape on shear modulus and damping ratio of gravel |
| topic | gravel granule shape shear modulus damping ratio |
| url | https://revistas.unal.edu.co/index.php/esrj/article/view/78727 |
| work_keys_str_mv | AT kaicui effectsofgranularshapeonshearmodulusanddampingratioofgravel AT hangsheng effectsofgranularshapeonshearmodulusanddampingratioofgravel |