Stability Analysis of Soil Embankment Slope Reinforced with Polypropylene Fiber under Freeze-Thaw Cycles

Table 5

Analysis of variance (ANOVA) results for mechanical index.

Assessment index	Source of variance	SS	DF	Error sources	F value	Critical value	Significance
Internal friction angle (°)	F-T cycles	72.57	2		4.35	F0.01 (2, 6) = 10.90; F0.05 (2, 6) = 5.14; F0.10 (2, 6) = 3.46
	Fiber length	2.06	2	√
	Fiber content	27.21	2	√
	Empty column	50.02	2	√
Cohesion (kPa)	F-T cycles	258.84	2		21.24	F0.01 (2, 4) = 18.00; F0.05 (2, 4) = 6.94; F0.10 (2, 4) = 4.32
	Fiber length	20.95	2	√
	Fiber content	95.94	2		7.87
	Empty column	24.37	2	√

Note. √, the item of error sources; , most significant; , more significant; , significance.