Compression Characteristics of Solid Wastes as Backfill Materials

Table 3

Summary of compression degree-stress test results.

Category	Test	Compression degree
		Stress of 2 MPa	Stress of 12.5 MPa	2~12.5 MPa increments
Single size	1	0.4246	0.1493	0.28
	2	0.4630	0.1958	0.27
	3	0.5011	0.2427	0.26
	4	0.5991	0.3451	0.25
	5	0.6168	0.4166	0.20
Maximum particle size	6	0.6770	0.5131	0.16
	7	0.6910	0.5245	0.17
	8	0.7448	0.5934	0.15
	9	0.6936	0.5247	0.17
Full-scale gradation	10 ()	0.8051	0.6721	0.13
	11 ()	0.8245	0.6926	0.13
	12 ()	0.7832	0.6458	0.14
	13 ()	0.7423	0.5996	0.14

Note: is Talbot’s exponent.