Experimental Study on Diffusion Process of Sulfate Ion in Cemented Gangue Backfill Material

Figure 2

The relationship between concentration and immersion time at different diffusion depths. (a) 3% Na₂SO₄⁻, (b) 5% Na₂SO₄, and (c) 10% Na₂SO₄.

(a)

(b)

(c)