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

Table 2

Test ratios of phase 1.

Group number	Cement content (%)	WCP content (%)
WCP0	100	0
WCP50	50	50
WCP60	40	60
WCP70	30	70
WCP80	20	80
WCP90	10	90

Note. The group number in the table is “WCPa,” where “a” means the mixing percentage.