Influence of Mechanical Properties of Filling Paste on Overlying Strata Movement and Surface Settlement

Table 2

Result of the introduction test for filling material matching age-intensity.

Experimental scheme	Material ratio kg/m^3				Uniaxial compressive strength/MPa
	Cementitious material	Fly ash	Gangue	Water	8 h	1 d	3 d	7 d	28 d
1	100	400	701	489	0.00	0.10	0.21	0.30	0.57
2	120	400	712	542	0.12	0.12	0.33	0.42	0.77
3	150	400	719	502	0.14	0.18	0.53	0.69	1.19
4	100	400	1066	402	0.28	0.33	0.60	0.90	1.22
5	100	400	1162	385	0.19	0.21	0.41	0.49	0.69
6	60	572	1493	521	0.22	0.40	0.50	0.63	0.64
7	80	572	1320	510	0.40	0.71	0.88	1.09	1.24
8	100	572	1184	488	0.61	0.91	1.12	1.54	1.69
9	150	572	1222	529	1.25	1.62	2.27	2.56	2.95