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Author:

Wang, Zigeng (Wang, Zigeng.) | Dai, Qingli (Dai, Qingli.) | Guo, Shuaicheng (Guo, Shuaicheng.) | Wang, Ronghua (Wang, Ronghua.) | Ye, Mingxiao (Ye, Mingxiao.) | Yap, Yoke Khin (Yap, Yoke Khin.)

Indexed by:

EI Scopus SCIE

Abstract:

This presented research investigated the physical properties and accelerated sunlight-healing performance of graphite modified asphalt materials. Two types of graphite materials, flake graphite and exfoliated graphite nanoplatelets (xGNP), were added to asphalt with different contents by weight. Asphalt binder tests were conducted to evaluate the performance of modified asphalt, including rotational viscosity, light absorbance, and thermal conductivity. The tests results of graphite modified asphalt showed increased viscosities, decreased activation energies, and increased light absorbance and thermal conductivity in comparison to the control asphalt. Afterwards, the graphite modified asphalt mixttire beams (5% flake graphite and 2% xGNP) were prepared and used for cyclic fracture-light healing tests. The digital image correlation (DIC) was utilized to characterize the displacement changes in the fracture zone during the light healing process. The DIC results indicated that the improved healing performance of graphite modified asphalt mixtures and decreased healing displacement with light healing cycles. Finally, the measured recovered strength after each cycle was used to evaluate the healing performance of both the graphite modified and control samples. The results of cyclic fracture-light healing tests indicated that the graphite modified asphalt materials have significantly improved healing performance and therefore these materials have promises in promoting new light healing applications. (C) 2016 Elsevier Ltd. All rights reserved.

Keyword:

Rotational viscosity Recovered strength Light healing Graphite modified asphalt materials Light absorbance Thermal conductivity Digital image correlation

Author Community:

  • [ 1 ] [Wang, Zigeng]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Ronghua]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Dai, Qingli]Michigan Technol Univ, Dept Civil & Environm Engn, 1400 Townsend Dr, Houghton, MI 49931 USA
  • [ 4 ] [Guo, Shuaicheng]Michigan Technol Univ, Dept Civil & Environm Engn, 1400 Townsend Dr, Houghton, MI 49931 USA
  • [ 5 ] [Ye, Mingxiao]Michigan Technol Univ, Dept Phys, 1400 Townsend Dr, Houghton, MI 49931 USA
  • [ 6 ] [Yap, Yoke Khin]Michigan Technol Univ, Dept Phys, 1400 Townsend Dr, Houghton, MI 49931 USA

Reprint Author's Address:

  • [Dai, Qingli]Michigan Technol Univ, Dept Civil & Environm Engn, 1400 Townsend Dr, Houghton, MI 49931 USA

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Source :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

Year: 2017

Volume: 134

Page: 412-423

7 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:287

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 25

SCOPUS Cited Count: 32

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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