Development of Coal Mine Filling Paste with Certain Early Strength and Its Flow Characteristics

Table 3

Results of the orthogonal test and paste parameter test.

Test number	A/%	B/%	C/%	Slump/cm	Segregation degree/cm	Setting time/min		Compressive strength/MPa
						Initial	Final	16 h	1 d	3 d	7 d	28 d
P1	1	0.2	79	26.4	2.2	4 : 47	5 : 22	0.04	0.22	0.89	1.48	2.58
P2	1	0.4	82	16.5	1.5	3 : 38	4 : 24	0.21	0.38	1.02	1.58	2.22
P3	1	0.6	85	13.1	0.6	3 : 08	3 : 40	0.32	0.53	1.56	1.69	2.05
P4	2	0.2	82	24.2	1.8	4 : 10	4 : 50	0.14	0.21	0.78	1.31	2.41
P5	2	0.4	85	15.8	0.7	3 : 33	3 : 52	0.28	0.68	1.20	1.61	1.98
P6	2	0.6	79	24.3	1.8	3 : 51	4 : 30	0.30	0.88	1.12	1.31	2.07
P7	3	0.2	85	17.4	0.8	3 : 50	4 : 27	0.06	0.21	0.98	1.24	2.46
P8	3	0.4	79	22.6	2.0	4 : 18	4 : 41	0.18	0.36	1.07	1.34	2.34
P9	3	0.6	82	19.4	1.4	3 : 25	4 : 18	0.24	0.48	1.36	1.68	2.03