Experimental Study on the Effect of Wetting-Drying Cycles on Crack Development and Radon Retardation of the Covering Soil in Uranium Mill Tailing Impoundments.

4.4.2 Effect of Amplitude of Wetting–Drying Cycles on the Radon Exhalation Rate in Cover Soil The radon exhalation rate shows an overall trend of gradually increasing to rapidly increasing under seven wetting–drying cycles, as illustrated in Figure 15 .

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(2) Cumulative damage degree in the uranium mill tailing covering soil showed a trend of rapid growth to stable growth with an increase in the number of wetting–drying cycles.

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