Investigation on Dynamic Stability of Cement-Stabilized Expansive Soil Subgrades Subjected to Repeated Heavy-Haul Train Loads

Table 6

Fitting parameters.

Test conditions	a	b
f = 1 Hz, σ3 = 15 kPa, σd = 151.2 kPa	0.187	0.06
f = 1 Hz, σ3 = 15 kPa, σd = 165.7 kPa	0.486	0.287
f = 1 Hz, σ3 = 30 kPa, σd = 157.5 kPa	0.237	0.145
f = 1 Hz, σ3 = 60 kPa, σd = 182.3 kPa	0.165	0.08
f = 5 Hz, σ3 = 15 kPa, σd = 150.3 kPa	0.475	0.240