Investigation of the Swelling Pressure of Marlstone in the Vicinity of Cations | ||
| Journal of Mining and Environment | ||
| مقاله 14، دوره 17، شماره 3، مرداد و شهریور 2026، صفحه 1035-1050 اصل مقاله (8.42 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2025.15669.3010 | ||
| نویسندگان | ||
| Amirreza Kavandi؛ Ramin Doostmohammadi* | ||
| Mining Engineering Department, Faculty of Engineering, University of Zanjan, Zanjan, Iran | ||
| چکیده | ||
| So far, limited research has been conducted on the swelling behavior of Marlstone in the presence of cations. In this study, swelling pressure experiments were performed on rock samples obtained from the Marash Dam, located in northwest Iran. The specimens underwent wetting and drying cycles to achieve an equilibrium condition before cation infiltration. Rock specimens were infiltrated with distilled water and with 1, 2, and 3 mol/L solutions of sodium chloride (NaCl) and calcium chloride (CaCl2). The findings suggest that as the concentration of the solutions rises, the swelling pressure of Marlstone diminishes. Furthermore, at the same concentrations, the swelling pressure of samples soaked in CaCl2 solutions was less than that of those treated with NaCl solutions. Additionally, Marlstone saturated with Ca2+ ions exhibited greater resistance to leaching compared to those saturated with Na+ ions. The findings of this research can be applied to control the swelling pressure of weak rocks in proximity to support systems. | ||
| کلیدواژهها | ||
| Swelling control؛ Cation retention capability؛ Na+ cation؛ Ca2+ cation | ||
| مراجع | ||
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