Research Article
Investigation on the Properties and Distribution of Air Voids in Porous Asphalt with Relevance to the Pb(II) Removal Performance
Figure 6
Vertical AV distribution in PA specimens at various AV contents of 16% and 20%, respectively: (a) AV content, (b) AV number, and (c) AV volume.
(a) |
(b) |
(c) |