Study on Permeability of Steel Slag and Steel Slag Modifying Silt Soil as New Geo-Backfill Materials

Table 8

Comparison between test values and formula calculation values on the permeability coefficient of fine steel slag and coarse steel slag.

Type of steel slag	d10 (mm)	E	Test value (10^−3 cm/s)	Calculation value (10^−3 cm/s)	Deviation (%)
Fine steel slag	0.13	0.4937	3.08	2.998	2.65
	0.13	0.5322	3.36	3.502	−4.23
	0.13	0.6154	3.84	4.666	−21.51
	0.13	0.6257	5.08	4.815	5.21
	0.13	0.6903	6.39	5.762	9.82
	0.13	0.7246	6.53	6.267	4.02
Coarse steel slag	0.21	0.5674	3.2	3.971	−24.10
	0.21	0.6055	3.36	4.509	−34.19
	0.21	0.6351	5.02	4.935	1.68
	0.21	0.6613	5.89	5.318	9.71
	0.21	0.7204	6.16	6.186	−0.42
	0.21	0.8241	6.81	7.681	−12.79
Gravel steel slag	0.27	0.4227	0.72	0.972	−35.03
	0.27	0.4829	1.01	1.119	−10.80
	0.27	0.5102	67.2	46.187	31.27
	0.27	0.5921	172	186.557	−8.46
	0.27	0.6207	244	231.389	5.17
	0.27	0.7151	291	293.437	−0.84