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Effects of loading rate and temperature on strengthand deformability of Maha Sarakham salt |
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| รหัสดีโอไอ | |
| Creator | 1. Komkrit Phatthaisong 2. Suratwadee Sartkaew 3. Kittitep Fuenkajorn |
| Title | Effects of loading rate and temperature on strengthand deformability of Maha Sarakham salt |
| 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. | 2 |
| Page no. | 359 |
| Keyword | rock salt, strain energy, elasticity, strength, dilation |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Uniaxial and triaxial compression tests are performed to assess the effects of temperature and loading rate on strengthand deformability of Maha Sarakham salt. Specimens are compressed to failure under constant confining pressures between 0and 12 MPa while the axial stress is increased at constant rates of 0.001, 0.01, and 0.1 MPa/s. Elasticity and strength at dilationand at failure increase with loading rates. Sets of empirical equations are derived for the strength, temperature, and applied stressrate in forms of power, logarithmic, and exponential functions. The distortional strain energy at dilation and at failure varieslinearly with the mean normal stress. The proposed strength criteria are applied to determine the safe maximum withdrawal rateof a compressed-air energy storage cavern in the Maha Sarakham formation. The strain energy criterion that considers bothdistortional and mean stress-strain tends to give the most conservative result. |
