Author
Yongjia Jiang
Bio: Yongjia Jiang is an academic researcher from Nanjing University. The author has contributed to research in topics: Epoxy & Medicine. The author has an hindex of 8, co-authored 9 publications receiving 203 citations.
Topics: Epoxy, Medicine, Gene, Asphalt, Thermosetting polymer
Papers
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TL;DR: In this paper, an industrial SBS-modified asphalt (SBA) was used to prepare epoxy SBS modified asphalt (ESBA) and the morphology, rheological, thermal and mechanical properties of ESBA were characterized.
62 citations
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TL;DR: In this article, epoxy SBS-modified asphalts (ESBAs) were prepared with epoxy monomer, curing agent and SBS modified SBA with various styrene butadiene structures, which in turn were subjected to laser scanning confocal microscopy (LSCM), viscous measurements, thermal analysis and tensile tests.
Abstract: As the most important thermoplastic and thermosetting modifiers, styrene–butadiene–styrene triblock copolymer (SBS) and epoxy resin have been widely applied in asphalt modifications. In this paper, epoxy SBS-modified asphalts (ESBAs) were prepared with epoxy monomer, curing agent and SBS-modified asphalts (SBAs) with various styrene–butadiene structures, which in turn were subjected to laser scanning confocal microscopy (LSCM), viscous measurements, thermal analysis and tensile tests. The LSCM results revealed that both polymer-rich phase and fluorescent particle-rich phase were observed in the asphalt matrix. Moreover, the number of SBS particles in SBAs increased with the increase of styrene contents. The presence of SBS decreased the size of dispersed domains in the continuous epoxy phase of the neat epoxy asphalt binder (EAB). For ESBAs, a double phase separation occurred between SBA and epoxy in the continuous epoxy phase and between asphalt and SBS in the dispersed SBA phase. Both number and size of SBS domains in the dispersed SBA phase of ESBAs increased with the increase of styrene contents. The inclusion of styrenic polymers increased the viscosity of the neat EAB. The viscosity of ESBAs increased with the increase of average molecular weights of the styrenic polymers. The addition of styrenic polymers increased the glass transition temperature (Tg) and storage modulus (E′) of the neat EAB. Meanwhile, the inclusion of styrenic polymers weakened the damping properties of the neat EAB. The styrene-butadiene structures had little effect on the Tg and damping properties of ESBAs. The E′ of ESBAs decreased with the increase of styrene contents. The presence of SBS enhanced the thermal stability of the neat EAB. Tensile results showed that the addition of SBS increased the tensile strength of the neat EAB.
53 citations
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TL;DR: Wang et al. as mentioned in this paper employed attapulgite (ATT), one kind of natural fibrous nanoclays, as the nanofiller to reinforce EAA.
48 citations
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TL;DR: Sasobit has been widely applied as warm-mix asphalt (WMA) additive in an environment friendly and energy saving pavement construction as mentioned in this paper, and has been extensively used on the pa...
Abstract: Sasobit has been widely applied as warm-mix asphalt (WMA) additive in an environment friendly and energy saving pavement construction. Epoxy asphalt (EA) has been extensively used on the pa...
41 citations
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TL;DR: In this article, halogen-free flame retardants were used to improve the fire retardancy of cold-mix epoxy asphalt binders (CEABs) in highway tunnels.
40 citations
Cited by
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TL;DR: In this article, the authors presented a summary mainly about the chemistry of epoxy resins, the curing mechanism and properties of polypropylene epoxy materials covering epoxy asphalt, epoxy emulsified asphalt and epoxy concrete.
151 citations
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TL;DR: In this article, nano-organic palygorskite (O-PAL) was successfully prepared by acid activation and silane modification, together with styrene-butadiene-styrene block copolymer (SBS) modified asphalt, was prepared by melt blending.
65 citations
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TL;DR: In this paper, a mixture of epoxy oligomer and curing agent was incorporated into asphalt rubber to prepare epoxy asphalt rubber (EAR), and the effects of Sasobit on the rotational viscosity, glass transition temperature, damping performance, mechanical properties and phase-separated morphology of the neat EAR were investigated.
65 citations
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TL;DR: In this paper, the effects of SBS type and dosage, asphalt type, processing technology and environment on phase structure and separation are reviewed and the correlation between SBS modified asphalt and chemical composition, micromechanics, rheological properties, and other aspects are analyzed.
58 citations
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TL;DR: In this article, epoxy SBS-modified asphalts (ESBAs) were prepared with epoxy monomer, curing agent and SBS modified SBA with various styrene butadiene structures, which in turn were subjected to laser scanning confocal microscopy (LSCM), viscous measurements, thermal analysis and tensile tests.
Abstract: As the most important thermoplastic and thermosetting modifiers, styrene–butadiene–styrene triblock copolymer (SBS) and epoxy resin have been widely applied in asphalt modifications. In this paper, epoxy SBS-modified asphalts (ESBAs) were prepared with epoxy monomer, curing agent and SBS-modified asphalts (SBAs) with various styrene–butadiene structures, which in turn were subjected to laser scanning confocal microscopy (LSCM), viscous measurements, thermal analysis and tensile tests. The LSCM results revealed that both polymer-rich phase and fluorescent particle-rich phase were observed in the asphalt matrix. Moreover, the number of SBS particles in SBAs increased with the increase of styrene contents. The presence of SBS decreased the size of dispersed domains in the continuous epoxy phase of the neat epoxy asphalt binder (EAB). For ESBAs, a double phase separation occurred between SBA and epoxy in the continuous epoxy phase and between asphalt and SBS in the dispersed SBA phase. Both number and size of SBS domains in the dispersed SBA phase of ESBAs increased with the increase of styrene contents. The inclusion of styrenic polymers increased the viscosity of the neat EAB. The viscosity of ESBAs increased with the increase of average molecular weights of the styrenic polymers. The addition of styrenic polymers increased the glass transition temperature (Tg) and storage modulus (E′) of the neat EAB. Meanwhile, the inclusion of styrenic polymers weakened the damping properties of the neat EAB. The styrene-butadiene structures had little effect on the Tg and damping properties of ESBAs. The E′ of ESBAs decreased with the increase of styrene contents. The presence of SBS enhanced the thermal stability of the neat EAB. Tensile results showed that the addition of SBS increased the tensile strength of the neat EAB.
53 citations