Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials

Table 4

Shear strength fitting formula and related parameters of each sample.

Sample number	Fitting formula
I-1		0.96039	35.72279	0.54232
I-2		0.96171	42.11432	0.48958
I-3		0.85606	26.08094	0.55666
II-1		0.96233	32.19386	0.49982
II-2		0.97055	17.34879	0.61255
II-3		0.99807	23.94237	0.55684
III-1		0.9941	1.74293	0.92716
III-2		0.99386	3.54802	0.79243
III-3		0.98799	2.09252	0.86948