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Mechanical performance of consolidated crushed saltas backfill in boreholes and shafts |
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| รหัสดีโอไอ | |
| Creator | 1. Supattra Khamrat 2. Kittitep Fuenkajorn |
| Title | Mechanical performance of consolidated crushed saltas backfill in boreholes and shafts |
| 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. | 430 |
| Keyword | strain energy, consolidation, crushed salt, backfill, recrystallization |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Consolidation tests have been performed to determine the mechanical properties of crushed salt as affected by appliedstresses and consolidation period. The crushed salt with particle sizes ranging from 0.075 to 4.76 mm mixed with 5% saturatedbrine are consolidated under axial stresses ranging from 2.5 to 10 MPa. The consolidation curves show instantaneous andtransient creep strains. Densities, uniaxial compressive strengths and elastic moduli measured after consolidation for 3 to 180days increase with the applied stresses and duration due to the particle rearrangement and recrystallization. The crushed saltproperties are calculated as a function of mean strain energy required during consolidation. The opening depth and the time atwhich the crushed salt backfill is installed are significant factors controlling its long-term density, strength and stiffness. |
