Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt

Table 11

Analysis of variance of rutting index (60°C).

Factor	Deviation sum of squares	Degrees of freedom	Mean-squared	F-value	P value	Significance
PPA	82.40	3	27.47	9.54	0.002	^∗∗
Bioasphalt	26.76	3	8.92	1.19	0.356
Shear time	5.3	3	1.77	0.19	0.90
Shear rate	1.21	3	0.40	0.042	0.99

 ≤ 0.1 is generally significant.  ≤ 0.05 is significant.  ≤ 0.001 is particularly significant.