Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials

Table 2

Characteristic particle size of samples.

Sample number	Constrained grain size (d60) (mm)	Average constrained grain size (d50) (mm)	d30 (mm)	Effective grain size (d10) (mm)
I-1	50.00	47.80	42.00	30.00
I-2	44.10	40.00	31.00	23.30
I-3	34.60	31.30	28.70	21.90
II-1	28.60	26.00	21.20	14.60
II-2	23.00	20.00	15.10	11.50
II-3	16.80	15.40	12.80	10.90
III-1	14.30	13.00	10.70	7.30
III-2	11.50	10.00	7.60	5.75
III-3	8.45	7.00	6.45	5.46