Tests Research on Grouting Materials of Waste-Concrete-Powder Cement for Goaf Ground Improvement

Table 3

Test ratios of phase 2.

Group number	Cement content (%)	WCP content (%)	Water-reducing agent content (%)
WCP70WR0.025	30	70	0.025
WCP70WR0.05	30	70	0.05
WCP80WR0.05	20	80	0.05
WCP80WR0.1	20	80	0.1
WCP90WR0.05	10	90	0.05
WCP90WR0.1	10	90	0.1
WCP90WR0.15	10	90	0.15

Note. The group number in the table is WCPaWRb, where “WR” is water-reducing agent, and “a” and “b” represent the WCP and WR mixing percentage, respectively.