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

Table 13

Visual analysis of BBR results.

Index	Factor	PPA	Bioasphalt	Shear time	Shear rate
Creep rate	Average value 1	0.48	0.375	0.402	0.395
	Average value 2	0.402	0.385	0.367	0.395
	Average value 3	0.348	0.395	0.392	0.385
	Average value 4	0.338	0.412	0.405	0.393
	Range	0.142	0.038	0.037	0.01
Stiffness modulus	Average value 1	34.025	58.35	41.925	42.575
	Average value 2	37.9	46.075	41.225	48.425
	Average value 3	48.725	39.25	46.525	42.95
	Average value 4	59.55	36.525	50.525	46.25
	Range	25.525	21.825	9.3	5.85