Table 4. Effect of grinding time on foam... | Emerald Publishing

Table 4.

Effect of grinding time on foam index (μl/g) of wet-stored fly ash at different pH (10% moisture, 20°C, 120 days)

Material pH	Wet	Grinding time: min
Material pH	Wet	5	10	20	40	120
DFA1
4.0	80	190	200	210	210	270
≈7.0	70	180	190	200	200	260
11.5	70	170	180	190	190	260
DFA3
4.0	40	70	80	80	80	90
≈7.0	40	80	80	80	80	100
11.5	50	80	80	80	80	100