Table 4 pH values and the Si/Al, Ca/Si, Na/Si ratios of raw materials and the main mixtures
From: Phosphogypsum waste as additives to lime stabilization of bentonite
Samples | pH | Si/Al | Ca/Si | Na/Si |
|---|---|---|---|---|
Bentonite | 8.2 | 2.09 | 0.02 | 0.03 |
PG | 2.7 | 4.55 | 63.0 | – |
Lime | 12.7 | – | – | – |
Bentonite + 8% Lime | 9.6 | 1.91 | 0.13 | 0.12 |
Bentonite + 8% Lime + 8% PG | 8.8 | 1.90 | 0.05 | 0.17 |