Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The parameters of the interface model for different surface preparation calibrated from bi-surface shear test. (1 MN/m3 = 3.68 lb/in3).
|
C MPa |
ft MPa |
Friction Coefficient |
Ktt (MN/m3) |
Knn (MN/m3) |
Ktt(min) (MN/m3) |
Knn(min) (MN/m3) |
|
|---|---|---|---|---|---|---|---|
| Sand blasted surface | 6.28 | 2 | 1 | 2.2 × 108 | 2.2 × 108 | 2.2 ×106 | 2.2 × 106 |
| Smooth surface | 2.8 | 0.5 | 0.5 | 106 | 106 | 104 | 104 |
