Performance Research of Materials and Engineering Application of Overburden Strata Separation-Zone Grouting Technology

Table 2

Gradation distribution of grouting Material particles.

Clay material	Particle diameter (mm)	>0.5	0.5∼0.25	0.25∼0.1	0.1∼0.075	0.075∼0.05	0.05∼0.01	0.01∼0.005	0.005∼0.002	<0.002
	Percentage (%)	1.1	1.4	7.2	1.7	10.0	42.2	9.7	6.6	20.1
Fly ash material	Particle diameter (mm)	≥5	2∼5	1∼2	0.5∼1	0.25∼0.5	0.075∼0.25	≤0.075	—	—
	Percentage (%)	0.218	2.489	3.066	9.403	13.127	53.928	17.769	—	—