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

Table 10

Comparison between the dynamic stress amplitude of the subgrade and the critical dynamic stress.

Subgrade depth (m)	Dynamic stress level of the subgrade (kPa)		Critical dynamic stress (kPa)	Evaluation result
	25 tons, 120 km/hr	30 tons, 120 km/hr
0–0.6	60.3–100.2	70.9–115.8	257–380	Meet stability
0.6–2.5	22.5–60.3	28.2–70.9	148.8–233.1	Meet stability
2.5–4.5	15.1–22.5	19.4–28.2	142.5–249.7	Meet stability