Effects of Fillers on Viscoelastic Response of Recycled Asphalt Cement
[1]Chen Huaxin,Niu Changchang,Kuang Dongliang,et al.Effects of Fillers on Viscoelastic Response of Recycled Asphalt Cement[J].Journal of Zhengzhou University (Engineering Science),2017,38(02):72-.[doi:10.13705/j.issn.1671-6833.2017.02.016]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 02
Page number:
72-
Column:
Public date:
2017-04-28
- Title:
- Effects of Fillers on Viscoelastic Response of Recycled Asphalt Cement
- CLC:
- -
- Abstract:
- In this paper,brookfield viscosity test and repeated creep test were adopted to investigate the viscoelastic properties of recycled asphalt and 3 recycled asphalt cements,the viscosity,ΔEη (viscous flow activation energy),Gv (the viscous part of creep stiffness) and cumulative strain γacc of recycled asphalt cements with different fillers were analysised.The experimental results indicated that the recovery levels of viscosity of asphalt and asphalt mastics showed great difference.The regeneration factors in decreasing order were slag asphalt cement ＞ cement asphalt mortar ＞ lime mortar asphalt ＞ asphalt;the viscous flow activation energies of 3 kinds of recycled asphalt cements were increased to varying degrees as well as the corresponding asphalt cements.But the viscous flow activation energy of recycled asphalts were lower than virgin asphalt,the recovery levels of Gv and γacc also showed great differences between the recycled asphalt and recycled asphalt cements.Based on the above indicators,3 kinds of fillers showed different degrees of positive impact on the restoration of viscoelastic properties of aging asphalt mortar,and the order of influences was slag ＞ cement ＞ lime.
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