Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles
In terms of the degradation of mechanical parameters of rock mass in the hydrofluctuation belt of a reservoir bank slope arising from rainfall and the reservoir level fluctuation, the moderately weathered sandstone in a side slope of the Three Gorges Reservoir Region is selected as a research object...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/7013032 |
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| _version_ | 1832549101759102976 |
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| author | Xinrong Liu Zijuan Wang Yan Fu Wen Yuan Luli Miao |
| author_facet | Xinrong Liu Zijuan Wang Yan Fu Wen Yuan Luli Miao |
| author_sort | Xinrong Liu |
| collection | DOAJ |
| description | In terms of the degradation of mechanical parameters of rock mass in the hydrofluctuation belt of a reservoir bank slope arising from rainfall and the reservoir level fluctuation, the moderately weathered sandstone in a side slope of the Three Gorges Reservoir Region is selected as a research object to carry out “drying-saturation-drying” tests for disks with two thicknesses (h=25 mm, h=50 mm) in different cycles; a spiral CT machine, an ultrasonic velocity meter, and a light Schmidt hammer are utilzed to conduct nondestructive testing on dry-wet cycles; through the Brazilian splitting test, the uniaxial tensile strength of “dry” and “saturated” sandstones under different dry-wet cycles is obtained. The research shows that, with the increase of the dry-wet circles (n), the longitudinal wave velocity and the rebound strength of sandstones are linearly decreased with n; the uniaxial tensile strength of sandstones and the mean CT number of cross sections are logarithmically decreased with n; the fitting equation of macro/micromechanical parameters and dry-wet cycles (n) of sandstones is raised, which is provided as a reference basis for the weathering process of sandstones under dry-wet cycles. |
| format | Article |
| id | doaj-art-722d1b1c2e534743a76278aba8e07bc2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-722d1b1c2e534743a76278aba8e07bc22025-02-03T06:12:09ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/70130327013032Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet CyclesXinrong Liu0Zijuan Wang1Yan Fu2Wen Yuan3Luli Miao4College of Civil Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Civil Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Construction Management and Real Estate, Chongqing University, Chongqing 400045, ChinaCollege of Civil Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Civil Engineering, Chongqing University, Chongqing 400045, ChinaIn terms of the degradation of mechanical parameters of rock mass in the hydrofluctuation belt of a reservoir bank slope arising from rainfall and the reservoir level fluctuation, the moderately weathered sandstone in a side slope of the Three Gorges Reservoir Region is selected as a research object to carry out “drying-saturation-drying” tests for disks with two thicknesses (h=25 mm, h=50 mm) in different cycles; a spiral CT machine, an ultrasonic velocity meter, and a light Schmidt hammer are utilzed to conduct nondestructive testing on dry-wet cycles; through the Brazilian splitting test, the uniaxial tensile strength of “dry” and “saturated” sandstones under different dry-wet cycles is obtained. The research shows that, with the increase of the dry-wet circles (n), the longitudinal wave velocity and the rebound strength of sandstones are linearly decreased with n; the uniaxial tensile strength of sandstones and the mean CT number of cross sections are logarithmically decreased with n; the fitting equation of macro/micromechanical parameters and dry-wet cycles (n) of sandstones is raised, which is provided as a reference basis for the weathering process of sandstones under dry-wet cycles.http://dx.doi.org/10.1155/2016/7013032 |
| spellingShingle | Xinrong Liu Zijuan Wang Yan Fu Wen Yuan Luli Miao Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles Advances in Materials Science and Engineering |
| title | Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles |
| title_full | Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles |
| title_fullStr | Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles |
| title_full_unstemmed | Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles |
| title_short | Macro/Microtesting and Damage and Degradation of Sandstones under Dry-Wet Cycles |
| title_sort | macro microtesting and damage and degradation of sandstones under dry wet cycles |
| url | http://dx.doi.org/10.1155/2016/7013032 |
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