Experimental Study on the Influence of Aging on Mechanical Properties of Geogrids and Bearing Capacity of Reinforced Sand Cushion

Table 3

Statistical analysis of tensile test data of geogrid.

Geogrid	Testing unit	Sample number										Average value	Standard deviation	Coefficient of variation
		1	2	3	4	5	6	7	8	9	10
BG1	Tensile strength	15.21	15.32	15.33	15.21	15.22	15.23	14.91	15.22	15.23	15.31	15.22	0.1126	0.0074
	Elongation at break	12.41	12.53	12.62	12.51	12.41	12.62	12.51	12.72	12.52	12.33	12.52	0.1098	0.0088
BG2	Tensile strength	25.43	25.42	25.61	25.63	25.62	25.71	25.42	25.33	25.41	25.62	25.52	0.1235	0.0048
	Elongation at break	14.34	14.25	14.42	14.21	14.43	14.54	14.33	14.32	14.21	14.23	14.33	0.1037	0.0073