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

Table 4

Dynamic shear parameters under different test conditions.

Frequency (Hz)	Virgin expansive soil		Expansive soil improved with 3% cement content		Expansive soil improved with 5% cement content
	cd (kPa)	φd (°)	cd (kPa)	φd (°)	cd (kPa)	φd (°)
1	10.5	15.4	24.1	38.3	32.6	31.2
5	12.3	8.4	25.2	36.2	36.5	22.4