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Compressive strengths of Maha Sarakham salt under constant ?m and constant ?3 stress paths |
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| รหัสดีโอไอ | |
| Creator | 1. Kiattisak Artkhonghan 2. Suratwadee Sartkaew 3. Supattra Khamrat 4. Kittitep Fuenkajorn |
| Title | Compressive strengths of Maha Sarakham salt under constant ?m and constant ?3 stress paths |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2561 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 6 |
| Page no. | 1291-1299 |
| Keyword | compression, extension, polyaxial loading, intermediate principal stress |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | True triaxial compression tests were performed to assess the effects of the loading path on the compressive strength and deformability of Maha Sarakham salt. The salt specimens with nominal dimensions of 45?45?90 mm3 are compressed to failure using a true triaxial load frame. The minimum principal stress was kept constant between 0 and 10 MPa and the mean stress was kept constant between 8 and 85 MPa, while the axial stresses increased at constant rates of 0.1 MPa/s until failure occurred. The results indicated that under constant ?m stress path the salt fails more easily than under constant ?3 path. The effects of ?2 on salt strength can be observed for both constant ?3 and constant ?m stress paths. The multi-axial strength criteria that were derived from constant ?3 strength results may overestimate the stability of the salt around spherical and cylindrical cavities. |
