Preparation and Properties of Nano-ZnO Combined with Biomass Heavy Oil Composite-Modified Asphalt

Table 2

Several significant-level softening point increment percentages (%).

Bio-asphalt nano-ZnO	6	9	12	15
1	3.9	2.6	11.1	11.7
3	10.9	6.7	20.9	18.7
5	4.7	3.4	13.3	12.8