POTENTIAL IMPACTS OF FREEZE–THAW CYCLES ON THE STABILITY OF ROCKFILL DAMS

Date

2025-11-11

Author

Köseömür, Ayten Ceyda
Yardımcı, Ahmet Güneş

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Normal 0 21 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:8.0pt; mso-para-margin-left:0cm; line-height:107%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-ansi-language:EN-US; mso-fareast-language:EN-US;} Freeze–thaw (FT) cycles are one of the most critical factors that have the potential to disturb the rock strength and, accordingly, the embankment stability of rockfill dams in regions with cold climatic conditions. A comprehensive experimental program was conducted to evaluate the effects of mechanical property changes and particle size distribution (PSD) alterations of plicated limestone and weathered basalt under FT cycles. Data from uniaxial compressive strength (UCS), porosity, Los Angeles abrasion, slake durability (SDI), and large-scale uniaxial loading tests quantitatively revealed the effects of FT cycles on the microstructural integrity. The findings indicate that plicated limestone exhibits a significant strength loss, porosity increase, and particle breakage, demonstrating higher susceptibility to FT compared to weathered basalt. These results emphasize the necessity of incorporating FT-related deterioration into material selection and design parameters for rockfill and tailing dams.

URI

https://hdl.handle.net/11511/117701

Conference Name

THE 29TH INTERNATIONAL MINING CONGRESS AND EXHIBITION OF TÜRKİYE (IMCET 2025),

Collections

Department of Mining Engineering, Conference / Seminar

Citation Formats

A. C. Köseömür and A. G. Yardımcı, “POTENTIAL IMPACTS OF FREEZE–THAW CYCLES ON THE STABILITY OF ROCKFILL DAMS,” presented at the THE 29TH INTERNATIONAL MINING CONGRESS AND EXHIBITION OF TÜRKİYE (IMCET 2025), Antalya, Türkiye, 2025, Accessed: 00, 2025. [Online]. Available: https://hdl.handle.net/11511/117701.