Effect of Ball Milling Time on the Performance of Phosphorous Building Gypsum

Table 3

Comparison of the effect of ball-milling treatment and other treatment methods.

Performance index	Here	[9]	[9]	[18]	[19]	[23]
Treatment methods	Ball milling	Ball milling and sieving	Ball milling and washing	Ball milling	Ball milling and aging	Aging
The water consumption of normal consistency (%)	60	80	74	68	76	82
Initial setting time (min)	4.5	3.5	5	-	8	9.5
Final setting time (min)	8.87	6	7.5	-	13	15.5
Flexural strength at 2 h (MPa)	3.41	2.55	2.61	2.39	2.28	2.21
Compressive strength at 2 h (MPa)	7.78	4.62	5.53	5.47	4.06	4.43