Research Article

The Effects of Using Waste Engine Oil Bottom on Physical, Rheological Properties and Composite Modification Mechanism of SBS-Modified Asphalt

Table 7

Statistical results of surface roughness.

Asphalt typeAverage surface roughness (Ra)RMS value of roughness (Rq)

0% WEOB2.384.00
2% WEOB2.754.62
4% WEOB3.225.09
6% WEOB3.545.42