An Experimental Investigation on the Mechanical Properties of Gangue Concrete as a Roadside Support Body Material for Backfilling Gob-Side Entry Retaining

Table 3

Strength development degree of the early age gangue concrete.

Water-cement ratio	(%)		(%)
	Without gangue	50% gangue content	Without gangue	50% gangue content
0.40	76.60	75.00	85.01	90.74
0.43	77.64	77.49	83.93	94.23
0.46	80.89	66.95	91.96	90.48
0.50	75.27	61.81	85.94	98.32
0.55	56.05	61.24	78.32	85.15
0.60	46.89	62.86	66.24	89.40
Average	68.89	67.56	81.90	91.37