Material | Elastic modulus (MPa) | Density (kg/m3) | Damping ratio (%) |
Steel rail | 200,000 | 7850 | 2 |
Concrete slab | 30,000 | 2400 | 3 |
Encapsulation | 2.6 | 1200 | 5 |
AC concrete | 3 | 2360 | 3 |
Pavement concrete | 17,405 | 2400 | 3 |
Fertile soil | 15 | 1600 | 5 |
Soil | 40 | 1800 | 5 |