Table 4.

Group 4 test (normal 150 kPa) creep stage strain under different levels of load.

Shear creep stages	The proportion of strain under all stress levels (%)
	15.8 kPa	31.6 kPa	47.4 kPa	55.3 kPa	63.2 kPa	71.1 kPa
Instantaneous creep deformation	80	50	47	22.63	7.14	4.31
Attenuation creep deformation	20	37.45	43.24	66.84	83.34	87.57
Uniform creep deformation	0	12.55	9.76	10.53	9.52	8.12
Accelerated creep	0	0	0	0	0	0