Experimental Study on Cumulative Plastic Deformation of Coarse-Grained Soil High-Grade Roadbed under Long-Term Vehicle Load

Table 4

Fitting data of the permanent deformation curves.

Working conditions	The spring back of strain (%)
A1	0.0283	0.1321	95.3454	0.10567	0.98859
A2	0.0432	0.2066	543.647	0.13487	0.94878
A3	0.0589	0.2723	414.753	0.18078	0.96081
B1	0.0343	0.2871	2104.77	0.15474	0.95312
B2	0.0528	0.2799	651.29	0.17378	0.95154
B3	0.0726	0.4025	1131.93	0.18135	0.94941
C1	0.0393	0.3962	6113.19	0.19941	0.92971
C2	0.0606	0.4815	3587.81	0.15923	0.97721
C3	0.0835	0.6211	6323.82	0.14873	0.92837
D1	0.0360	0.2427	576.75	0.12661	0.94081
D2	0.0545	0.3046	1304.27	0.17214	0.93742
D3	0.0737	0.3697	1021.53	0.17957	0.96353