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

Table 4

Orthogonal test table of factor level.

Variables	Unit	Coded and actual factor
PPA content	%	2	4	6	8
Bioasphalt content	%	10	12	14	16
Shear time	min	20	30	40	50
Shear rate	r/min	1000	2000	3000	4000