Influence of PPA on the Short-Term Antiaging Performance of Asphalt

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">0% PPA</td><td class="align_center">0.4% PPA</td><td class="align_center">0.8% PPA</td><td class="align_center">1.2% PPA</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left"><i>I</i><sub>S=O</sub> (unaged)</td><td class="align_center">0.0294</td><td class="align_center">0.0435</td><td class="align_center">0.0552</td><td class="align_center">0.0740</td></tr><tr><td class="align_left"><i>I</i><sub>S=O</sub> (aged)</td><td class="align_center">0.0348</td><td class="align_center">0.0451</td><td class="align_center">0.0561</td><td class="align_center">0.0741</td></tr><tr><td class="align_left">SCR</td><td class="align_center">18.37</td><td class="align_center">3.68</td><td class="align_center">1.63</td><td class="align_center">0.14</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Sulfoxide index and sulfoxide index change rate of modified asphalt with different PPA content before and after TFOT aging.</div>

Advances in Civil Engineering

Influence of PPA on the Short-Term Antiaging Performance of Asphalt

Table 5