Experimental Study on Grouting Effect and Mechanical Properties of the Rockfill Materials Grouted with SCM

Table 3

Strength parameters and Duncan-Chang model parameters of rockfill materials at different gradation levels after grouting.

Test no	Gradation characteristics	Grouted or not	(σ1–σ3) max (kPa)				Linear indicator		Duncan-Chang model parameter
			Confining pressure 200 kPa	Confining pressure 300 kPa	Confining pressure 400 kPa	Confining pressure 600 kPa	c (kPa)	(°)	K	n
2	Upper bound	Grouted	1271	1651	2021	2633	149.2	38.9	625	0.25
3	Average	Grouted	1527	1886	2186	2695	246.5	36.4	1506	0.27
4	Lower bound	Grouted	1973	2205	2546	2982	385.8	34.2	3320	0.3