Triaxial Shear Behavior of a Gravelly Sand with Different Forms of Reinforcement

Table 3

Stress-strain and volumetric strain-axial strain model parameters of the test results.

Specimen	σ3 (kPa)	a	b	c	d	e
Unreinforced	50	0.050	0.015	0.630	0.554	0.230
	75	0.044	0.013	0.604	0.501	0.221
	100	0.040	0.011	0.579	0.439	0.212
Geogrid sheet	50	0.041	0.015	0.667	0.519	0.230
	75	0.039	0.012	0.632	0.475	0.220
	100	0.038	0.009	0.593	0.438	0.210
Geogrid cell	50	0.042	0.013	0.649	0.589	0.236
	75	0.040	0.011	0.606	0.472	0.218
	100	0.038	0.009	0.558	0.373	0.197
Combination (1 layer)	50	0.039	0.012	0.778	0.727	0.266
	75	0.038	0.010	0.730	0.573	0.233
	100	0.037	0.008	0.687	0.444	0.207
Combination (2 layers)	50	0.040	0.009	0.707	0.433	0.212
	75	0.039	0.007	0.667	0.407	0.201
	100	0.038	0.005	0.617	0.368	0.192