Experimental Study on Groutability of Sand Layer concerning Permeation Grouting

Table 7

Calculation results of the sand layer groutability.

Slurry water-cement ratio W/C	Correction coefficient K1	Correction coefficient K2	Correction coefficient K3	Groutability index of sand layer N	Grouting
0.8	0.9	0.924	1.04	24.12	Unsuccessful grouting
1.0			1	25.08	Insufficient grouting
1.2			0.96	26.13	Insufficient grouting
1.4			0.92	27.26	Insufficient grouting
1.6			0.88	28.50	Insufficient grouting
2.0			0.8	31.35	Successful grouting