The granular underlayer protects the geotextile against puncturing by the overlying armor elements. It softens hydraulic pressure gradients, reduces lift forces on the armor elements and provides interlocking for the armor layer above.
NO | TEST | RESULT |
1 | Density of Rock ( Mg/m³) | 2940 |
2 | Water Absorption % | 0.2 |
3 | Aggregate Impact Value% | 7 |
4 | Point Load Index Test (MPa) | 10.06 |