Waste rubber and plastic are annoying issues in China and this
study recycled the two wastes in the asphalt production in hope of
on the one hand improving the properties of base asphalt, and on
the other hand alleviating the land-fill pressure and environmental
concerns brought by the wastes. The PRA was produced by mixing
base asphalt with 20% modifiers (a blend of crumble rubber and PP
powder by a ratio of 40:1) of the binder mass. The properties of
PRA, the performances of the mixture and the environment burdens
were tested and evaluated. SBS asphalt, one commonly used
asphalt in China, experienced the same test and evaluation procedures
to serve as a control. Throughout the study, several conclusions
are summarized: