Deterioration Regularity of Sodium Sulfate Solution Attack on Cemented Coal Gangue-Fly Ash Backfill under Drying-Wetting Cycles

<div>Surface damage of the CGFB samples immersed in 0–15% sodium sulfate solutions at the (a) third and (b) fifteenth drying-wetting cycles.</div>

Advances in Civil Engineering

Figure 3: Deterioration Regularity of Sodium Sulfate Solution Attack on Cemented Coal Gangue-Fly Ash Backfill under Drying-Wetting Cycles 