Study on the Accurate Measurement and Quantitative Evaluation Methods of Aggregate Surface Roughness

Table 2

Barton standard roughness contours.

Value range of JRC	Typical rock surface roughness contour
0 ∼ 2
2 ∼ 4
4 ∼ 6
6 ∼ 8
8 ∼ 10
10 ∼ 12
12 ∼ 14
14 ∼ 16
16 ∼ 18
18 ∼ 20