Abstract
Soil covering method is commonly used in uranium tailings pond beach management, but the material used and environmental factors can affect long-term safety and stability. The study tested CaCl2 solution concentrations for desiccation crack development and radon retardation in red clay. Four red clay radon shielding layer specimens with varying solution concentrations underwent drying tests. Results showed that soil mineral composition remained unchanged and the crack rate decreased with increased CaCl2 solution concentration; the best radon retardation effect is achieved by mixing CaCl2 solution with 3% concentration. These findings can guide effective radon treatment on uranium tailing pond beach surfaces.
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References
Wang H, He RC, Hong CS et al (2022) Analysis for distribution estimation of soil radon concentration and its influencing factors: A case study in decommissioned uranium mill tailings pond. J Radiat Res Appl Sci 15(4):100480
Zarnke AM, Tharmalingam S, Boreham DR et al (2019) BEIR VI radon: The rest of the story. Chem Biol Interact 301:81–87
Ferry C, Richon P, Beneito A et al (2002) Evaluation of the effect of a cover layer on radon exhalation from uranium mill tailings: transient radon flux analysis. J Environ Radioact 63(1):49–64
Liu XL, Li XY, Lan M et al (2021) Experimental study on permeability characteristics and radon exhalation law of overburden soil in uranium tailings pond. Environ Sci Pollut Res 28:15248–15258
Dai XW, Chen YF, Chen Y et al (2021) Effect of thickness and compaction degree of overburden soil on radon reduction for uranium tailings reservoir. Sci Technol Nuclear Install 2021:1–8
Wang H, Wang WH, He RC et al (2022) Experimental study on unsteady radon exhalation from the overburden layer of the uranium mill tailings pond under rainfall. Sci Technol Nuclear Install 2022:1–8
Liang KQ, Hong CS, Luo J et al (2022) Radon attenuation characteristics of compacted soil layer for uranium mill tailings pond subjected to drying-wetting cycles. Sci Total Environ 851:158184
Chen YF, Lin DY, Dai XW et al (2021) Preliminary research on the evolution laws of overburden soil structure and its radon reduction ability for uranium tailings impoundment in extreme heat and insolation conditions. J Radioanal Nucl Chem 330:1007–1015
Hirobe S, Oguni K (2016) Coupling analysis of pattern formation in desiccation cracks. Comput Methods Appl Mech Eng 307:470–488
An N, Tang CS, Xu SK et al (2018) Effects of soil characteristics on moisture evaporation. Eng Geol 239:126–135
Fujimaki H, Shimano T, Inoue M et al (2006) Effect of a salt crust on evaporation from a bare saline soil. Vadose Zone J 5(4):1246–1256
Yılmaz G, Yetimoglu T, Arasan S (2008) Hydraulic conductivity of compacted clay liners permeated with inorganic salt solutions. Waste Manage Res 26(5):464–473
Shon CS, Saylak D, Mishra SK (2010) Combined use of calcium chloride and fly ash in road base stabilization. Transp Res Rec 2186(1):120–129
Sani JE, Etim RK, Joseph A (2019) Compaction behaviour of lateritic soil–calcium chloride mixtures. Geotech Geol Eng 37:2343–2362
Abood TT, Kasa AB, Chik ZB (2007) Stabilisation of silty clay soil using chloride compounds. J Eng Sci Technol 2(1):102–110
Du JP, Zhou AN, Lin XS et al (2021) Prediction of swelling pressure of expansive soil using an improved molecular dynamics approach combining diffuse double layer theory. Appl Clay Sci 203:105998
Nguyen XP, Cui YJ, Tang AM et al (2013) Effects of pore water chemical composition on the hydro-mechanical behavior of natural stiff clays. Eng Geol 166:52–64
Thyagaraj T, Salini U (2015) Effect of pore fluid osmotic suction on matric and total suctions of compacted clay. Géotechnique 65(11):952–960
Tian BG, Cheng Q, Tang CS et al (2022) Effects of compaction state on desiccation cracking behaviour of a clayey soil subjected to wetting-drying cycles. Eng Geol 302:106650
Xu JJ, Zhang H, Tang CS et al (2022) Automatic soil crack recognition under uneven illumination condition with the application of artificial intelligence. Eng Geol 296:106495
Fuhrmann M, Benson CH, Likos WJ et al (2021) Radon fluxes at four uranium mill tailings disposal sites after about 20 years of service. J Environ Radioact 237:106719
Shokri N, Zhou P, Keshmiri A (2015) Patterns of desiccation cracks in saline bentonite layers. Transp Porous Media 110:333–344
Zhang XD, Ye P, Wu YJ et al (2022) Experimental study on simultaneous heat-water-salt migration of bare soil subjected to evaporation. J Hydrol 609:127710
Xu PP, Qian H, Zhang QY et al (2022) Investigating saturated hydraulic conductivity of remolded loess subjected to CaCl2 solution of varying concentrations. J Hydrol 612:128135
Gao XD, Tian R, Liu XM et al (2019) Specific ion effects of Cu2+, Ca2+ and Mg2+ on montmorillonite aggregation. Appl Clay Sci 179:105154
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The funding was provided by National Natural Science Foundation of China, 42277458, Yong Liu, Environmental Protection Research Project of Hunan Province, HBKT-2021024, Changshou Hong.
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Li, X., Chen, Y., Hong, C. et al. Effect of CaCl2 concentration on surface desiccation cracks of red clay and its radon retardation performance. J Radioanal Nucl Chem 332, 3317–3324 (2023). https://doi.org/10.1007/s10967-023-09030-z
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DOI: https://doi.org/10.1007/s10967-023-09030-z