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Author:

Guo, Meng (Guo, Meng.) (Scholars:郭猛) | Liu, Xu (Liu, Xu.) | Jiao, Yubo (Jiao, Yubo.) (Scholars:焦峪波) | Tan, Yiqiu (Tan, Yiqiu.) | Luo, Daisong (Luo, Daisong.)

Indexed by:

EI SCIE

Abstract:

In order to study the reversibility between aging and rejuvenation of modified asphalt binder, a kind of virgin asphalt was selected, and then three kinds of modified asphalt were prepared based on this virgin asphalt. The short-term and long-term aging tests were carried out for the four asphalts. Then three kinds of rejuvenation tests were carried out for the aged asphalt, including commercial rejuvenator, aromatic oil and warm mix rejuvenator. Dynamic shear rheometer (DSR) was used to carry out frequency scanning tests at different temperatures. According to the principle of time temperature equivalence, the master curves of different modified asphalts were constructed, and the rheological properties of asphalt during aging and rejuvenation were studied. By comparing the parameters including complex modulus and hardening index, the rejuvenation effects of viscoelastic properties of modified asphalt were evaluated. Based on the complex modulus of virgin asphalt and modified asphalt, the aging rejuvenation reversible index RM of modified asphalt is proposed to evaluate the recovery of rheological properties of asphalt by different rejuvenators. The results show that the modulus of three kinds of modified asphalt will increase with the deepening of aging. Warm mix rejuvenator can reduce the complex modulus of virgin asphalt, SBS modified asphalt and rubber powder modified asphalt most significantly, followed by the rejuvenator, and the aromatics oil reduced least obviously. This applied to both short-term aging and long-term aging. This research provides a better understanding on the effectiveness and limitation of current rejuvenation techniques and rejuvenators on common asphalts, which is good for the further improvement on production and techniques. (C) 2021 Elsevier Ltd. All rights reserved.

Keyword:

Modifier Aging Asphalt binder Hardening index Rheology Rejuvenation Complex modulus

Author Community:

  • [ 1 ] [Guo, Meng]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Liu, Xu]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Jiao, Yubo]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Tan, Yiqiu]Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Peoples R China
  • [ 5 ] [Luo, Daisong]Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Peoples R China
  • [ 6 ] [Luo, Daisong]China Acad Transportat Sci, Res & Consulting Dept Rd Struct, Beijing 100029, Peoples R China
  • [ 7 ] [Luo, Daisong]China Acad Transportat Sci, Mat Res Ctr, Beijing 100029, Peoples R China

Reprint Author's Address:

  • 焦峪波

    [Jiao, Yubo]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China

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Source :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

Year: 2021

Volume: 301

7 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:116

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 32

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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