Table 3 The Marshall stability of the polyurethane mixture used for tunnel pavement, compared to the conventional asphalt mixture
Type of mixture | Gradation type | Marshall stability | Technical requirements (Residual value, %) | Test method | ||
|---|---|---|---|---|---|---|
Before water immersion (kN) | After water immersion (kN) | Residual value (%) | ||||
Polyurethane mixture | AC-10 [39] | 110.2 | 86.8 | 78.8 | – | T 0709 in JTG E20-2011, China |
OGFC-10 [39] | 80.3 | 66.8 | 83.2 | |||
Asphalt mixture | SMA-16 [94] | 11.8 | 10.5 | 89.0 | ≥75.0 | |
AC-16I [95] | 8.5 | 7.3 | 85.9 | |||
AC-13I [95] | 8.4 | 7.5 | 89.3 | |||