Study on Improvement of Aging Performance for Gussasphalt Modified by Reclaiming Agent

Gussasphalt has been widely used in steel bridge deck and pavement in China, but it will lead to the pyrolysis aging of gussasphalt binder in the mixing process due to the high temperature and long time mixing. In this paper, the effect of ARA asphalt reclaiming agent on the main performance indexes...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 267; no. 3; pp. 32045 - 32050
Main Authors Zhong, Ke, Sun, Mingzhi, Sun, Shengkai
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2019
Subjects
Aging
Asphalt
Bridge decks
Ductility
High temperature
Performance indices
Pyrolysis
Reagents
Reclamation
Steel bridges
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Summary:Gussasphalt has been widely used in steel bridge deck and pavement in China, but it will lead to the pyrolysis aging of gussasphalt binder in the mixing process due to the high temperature and long time mixing. In this paper, the effect of ARA asphalt reclaiming agent on the main performance indexes of gussasphalt at five aging temperatures was studied. It was found that the indexes of penetration and ductility were greatly improved after the addition of the reclaiming agent, and the softening point was regularly reinforced. All the three indexes were improved to varying degrees, which indicates that ARA reclaiming agent had a significant effect on the performance recovery of the gussasphalt after superheat aging.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/267/3/032045