Properties and Engineering Applications of a New Goaf Grouting Filling Material

Table 6

Volume ratio of cement-fly ash-MS slurry (C-FA-MS).

No.	Volume ratio of slurry
	Ratio of water-cement and fly ash	:  (%)	:
21	1.0 : 1.0	60 : 40	1.0 : 1.0
22			1.0 : 0.6
23			1.0 : 0.4
24			1.0 : 0.2
25		50 : 50	1.0 : 1.0
26			1.0 : 0.6
27			1.0 : 0.4
28			1.0 : 0.2
29		40 : 60	1.0 : 1.0
30			1.0 : 0.6
31			1.0 : 0.4
32			1.0 : 0.2
33		30 : 70	1.0 : 1.0
34			1.0 : 0.6
35			1.0 : 0.4
36			1.0 : 0.2

Note: The ratio of water-cement and fly ash is the mass ratio of water to the cement and fly ash powders;  :  is the mass ratio of cement to fly ash in solid powder;  :  is the volume ratio of cement-fly ash slurry to pure sodium silicate solution; :  is the volume ratio of cement-fly ash slurry to modified sodium silicate solution.