Compression Characteristics of Solid Wastes as Backfill Materials

Table 2

Summary of deformation modulus-stress test results.

Category	Test	Deformation modulus/MPa
		Stress of 2 MPa	Stress of 12.5 MPa	2–12.5 MPa increments
Single-graded size	1	3.65	16.50	12.85
	2	3.93	17.33	13.40
	3	4.19	18.71	14.52
	4	5.30	21.81	16.51
	5	5.17	25.87	20.70
Maximum particle size	6	6.56	30.94	24.38
	7	6.37	32.32	25.95
	8	7.68	37.87	30.19
	9	6.49	31.68	25.19
Full-scale gradation	10 ()	9.42	47.41	37.99
	11 ()	10.49	50.63	40.14
	12 ()	8.63	42.72	34.09
	13 ()	7.69	37.99	30.30

Note: is Talbot’s exponent.