Journal ArticleDOI
Thermal and bonding properties of epoxy asphalt bond coats
Yifan Sun,Ya Liu,Jie Gong,Xiaocheng Han,Zhonghua Xi,Junsheng Zhang,Qingjun Wang,Hongfeng Xie +7 more
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TLDR
In this paper, the phase separation of EABCs was investigated using laser scanning confocal microscopy observations, and it was shown that phase separation depended on the curing time and the size of asphalt particles increased with the asphalt content.Abstract:
Epoxy asphalt bond coat (EABC) is one of the thermosetting polymer-modified asphalts, which has been widely employed as a strong waterproof bonding layer between the asphalt concrete and the orthotropic steel bridge deck. In the present work, the influences of asphalt content on the phase separation, viscosity, thermal stability, viscoelastic behavior, mechanical performance, pull-off strength, and adhesive performance of EABCs were characterized by various instruments. Laser scanning confocal microscopy observations showed that phase separation occurring in EABCs depended on the curing time. The asphalt merged to form large spherical particles in the continuous epoxy phase during the cure reaction. The size of asphalt particles increased in the asphalt content. Viscosities of EABCs were higher than that of the pure epoxy and increased with the asphalt content in the initial curing stage. However, the opposite trend was observed in the latter curing stage. The presence of asphalt slightly improved the glass transition temperature and the damping properties of the pristine epoxy. For EABCs, the damping behaviors slightly increased with the asphalt content. The thermal stability of the pristine epoxy was enhanced by the incorporation of asphalt. The addition of asphalt decreased the mechanical, adhesive properties, and pull-off strength of the pristine epoxy. What’s more, these properties of EABCs decreased in the asphalt content.read more
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A critical review on performance and phase separation of thermosetting epoxy asphalt binders and bond coats
TL;DR: In this paper , the performance and phase separation of epoxy asphalt binders and bond coats were analyzed using different models of differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA).
Journal ArticleDOI
Development of eco-friendly fire-retarded warm-mix epoxy asphalt binders using reactive polymeric flame retardants for road tunnel pavements
TL;DR: In this paper, an eco-friendly flame-retarded warm-mix epoxy asphalt binders (WEABs) for road tunnel pavements were developed by incorporation of reactive polymeric flame retardant (RPFR), which was composed of a reactive polymer brominated epoxy oligomer (BEO) and antimony oxide.
Journal ArticleDOI
Improving toughness of epoxy asphalt binder with reactive epoxidized SBS
Yongjia Jiang,Ruikang Zhao,Zhonghua Xi,Jun Cai,Zuanru Yuan,Junsheng Zhang,Qingjun Wang,Hongfeng Xie +7 more
TL;DR: In this article, a reactive thermoplastic elastomer, epoxidized styrene-butadiene-styrene copolymer (ESBS) was introduced into epoxy asphalt binder (EAB).
Journal ArticleDOI
Viscosity‐curing time behavior, viscoelastic properties, and phase separation of graphene oxide/epoxy asphalt composites
TL;DR: Graphene oxide (GO) with 0.2, 0.5, and 1.0 wt% loading was used to modify warm-mix epoxy asphalt binders (WEABs) as discussed by the authors .
Journal ArticleDOI
Influence of oligomer content on viscosity and dynamic mechanical properties of epoxy asphalt binders
TL;DR: In this paper , the impact of oligomer content on the viscosity, dynamic mechanical properties and mechanical behaviors of hot-mix epoxy asphalt binders was investigated by Brookfield viscometer and dynamic mechanical analysis and universal testing machine.
References
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Recent applications of viscoelastic damping for noise control in automobiles and commercial airplanes
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Modification of epoxy resin using reactive liquid (ATBN) rubber
N. Chikhi,S. Fellahi,M. Bakar +2 more
TL;DR: In this article, liquid amine-terminated butadiene acrylonitrile (ATBN) copolymers were added at different contents to improve the toughness of diglycidyl ether of bisphenol A epoxy resins using polyaminoimidazoline as a curing agent.
Journal ArticleDOI
Reaction-induced phase decomposition in polymer blends
TL;DR: In this paper, a spinodal decomposition induced by chemical reaction is observed in an epoxy/ polyethersulphone (PES) system having a lower critical solution temperature (LCST) type phase diagram.