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

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Zhong, Ke^1 ; Sun, Mingzhi^1 ; Sun, Shengkai^1

Research Institute of Highway Ministry of Transport, Beijing

100088, China^1

关键词: Aging performance;    Aging temperatures;    High temperature;    Mixing process;    Performance indices;    Performance recovery;    Softening points;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032045/pdf
DOI  :  10.1088/1755-1315/267/3/032045

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

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.