Preparation and properties of a novel high-viscosity modified bitumen

Zhang, Zengping; Chen, Liqi; Jiang, Peng; Sun, Jia; Zhang, Dali; Li, Xue; Wen, Fusheng; Líu, Hao

doi:10.1016/j.conbuildmat.2022.128183

Cited by 13 publications

(6 citation statements)

References 47 publications

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“…The results revealed that for HSAC, DS increased with rising TPS content, from 5569 times/mm for HSAC7 to 8798 times/mm for HSAC7. Adding TPS to the asphalt binder improved its viscosity, which helped to enhance the adherence between the asphalt and the aggregate, thus improving the high-temperature stability [28]. For ESAC, it can be seen that the DS of ESAC was significantly higher than that of HSAC, and even the minimum one, ESAC35, had a DS of 11,200 times/mm.…”

Section: High-temperature Rutting Resistancementioning

confidence: 98%

“…ESACs prepared with the above ESA binders were labeled ESAC35, ESAC40, ESAC45, and ESAC50, respectively. TPS is mainly composed of thermoplastic rubber, which can absorb the lighter components of asphalt when it swells at high temperatures, increasing the viscosity of the binder and improving its comprehensive properties [28]. Currently, the additive amount of TPS in SBS-modified asphalt binder is generally 8-12 wt% [29,30].…”

Section: Mixing Parametersmentioning

confidence: 99%

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Materials Optimization and Service Performance Evaluation of a Novel Steel Bridge Deck Pavement Structure: A Case Study

Haibara,

Ge,

Sun

2023

Applied Sciences

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Although the double-layer pavement structure with a top layer of stone mastic asphalt concrete (SMAC) and a bottom layer of epoxy asphalt concrete (EAC) has been confirmed to have excellent overall performance in the laboratory, there is a lack of comparison and verification in practical projects. Hence, the utilization of the SMAC + EAC structure in this steel bridge deck pavement (SBDP) practical project and the clarification of its service performance are of significant importance for facilitating the promotion and application of this novel structure. This study relied on an SBDP reconstruction project in Ningbo, China. Indoor performance tests were used to determine the appropriate material compositions for SMAC and EAC. Subsequently, both ERS and SMAC + EAC pavement structures were paved in the project, and the service conditions of the different pavements after one year of operation were tested and compared. The results indicated that the epoxy SBS asphalt (ESA) binder prepared by substituting SBS-modified asphalt binder for the base binder, exhibited improved mechanical strength and toughness. The variation of modifier content significantly affected the high-temperature stability, low-temperature crack resistance, and moisture damage resistance of epoxy SBS asphalt concrete (ESAC) and high-viscosity SBS asphalt concrete (HSAC), while the gradation mainly influenced the skid resistance. The optimal contents of modifiers in ESA and HAS binders were finalized at 45 wt% and 11 wt%. After one year of operation on the trial road, the pavement performance of the SMAC + EAC structure had significant advantages over the ERS system, with all lanes having an SBDP quality index (SDPQI) above 90 and an excellent service condition. The successful application of the SMAC + EAC structure validated its applicability and feasibility in SBDP, which provided strong evidence for the further promotion of this structure.

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Section: High-temperature Rutting Resistancementioning

confidence: 98%

Section: Mixing Parametersmentioning

confidence: 99%

Materials Optimization and Service Performance Evaluation of a Novel Steel Bridge Deck Pavement Structure: A Case Study

Haibara,

Ge,

Sun

2023

Applied Sciences

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“…4.1. Effect of asphalt viscosity on anti-fly-off performance of porous asphalt mixture In this paper, four different asphalt types were selected for SBS modified asphalt, rubber asphalt, dry process high viscosity asphalt [8] , wet (finished product) process high viscosity [9][10] . The asphalt performance indicators are shown in Table 7.At the same time, the dynamic viscosity of asphalt was used as a reference to study the anti-fly-off performance of four asphalt mixtures, as shown in Table 8 and Figure 1.…”

Section: Benchmark Matching Ratio Designmentioning

confidence: 99%

Research on Material Composition Design of Porous Asphalt Mixture Based on Flyaway Characteristics

Xia¹,

Chen²,

Ding³

et al. 2023

J. Phys.: Conf. Ser.

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Aggregate dispersion is one of the main diseases of porous asphalt. Reasonable material composition can effectively reduce the occurrence of dispersion disease. In order to study how to determine the volume index and mechanical properties of the mixture from the five aspects of asphalt, asphalt oil film thickness, coarse aggregate, fiber and filler, this paper selects different kinds of materials and different additions, based on the benchmark mix ratio, and carries out the Kentucky dispersion test to reduce the dispersion disease of the porous asphalt. Through the analysis of the test results, it is verified that adopting high-viscosity modified asphalt, increasing the thickness of asphalt oil film, adding lime or hydrated lime as filler, and adding a certain amount of fiber can enhance the anti-flying performance of porous asphalt mixture. At the same time, the article carries out experimental analysis of various additives for different materials. Finally, various material comparison schemes to improve the anti-flying performance of porous asphalt mixture were formed. In terms of the selection and use of raw materials, it provides certain guidance for the construction of porous asphalt.

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“…C C was continuously opened, which resulted in SBS crosslinking to form a stable threedimensional network structure. The double bonds or methylenes of the polybutadiene segment in SBS are reacted with carbonyl, carboxyl, hydroxyl, esters, and other reactive groups in the asphalt, thus grafting the asphalt onto SBS, 45,46 which improves the interfacial relationship between SBS and the base asphalt, resulting in more stable composite modified system. According to the above analysis, the process of preparing high-viscosity asphalt using STP is mainly physical modification accompanied by chemical reactions.…”

Section: Ftir Spectrum Analysismentioning

confidence: 99%

Using SBS/terpene‐styrene resin blends as a novel high‐viscosity asphalt modifier

Chen

Zhang

Wang

et al. 2022

J of Applied Polymer Sci

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To improve the inferior stability in high‐viscosity asphalt prepared using styrene‐butadiene‐styrene block copolymer (SBS) and to simplify the preparation process, a novel high‐viscosity modifier (STP) was prepared with SBS, terpene‐styrene resin (TSR) and plasticizer. Its inherent properties, optimal dosage, and modification effect were investigated. The results show that STP has lower component melting temperature and stronger polarity, combined with good thermal stability, ensuring that STP possesses a better modification effect on asphalt. 14.5–17.6 wt% was determined as the appropriate content of STP. The incorporation of STP improved the rutting resistance and elasticity percentage of the asphalt. The zero shear viscosity (ZSV) of asphalt fitted by the Carreau model showed that STP increased the cohesion of the asphalt system and improved the high‐temperature deformation resistance. The small non‐recoverable creep compliance value proves that the STP high‐viscosity asphalt (STP‐HVA) exhibits excellent resistance to permanent deformation at high‐temperatures while displaying low‐stress sensitivity and achieving an extremely heavy traffic rating. STP confers greater flexibility to asphalt to eliminate low‐temperature cracking phenomenon. Smaller CMAI and PAAI values demonstrate that STP‐HVA exhibits outstanding aging resistance. TSR effectively improves the compatibility of SBS and base asphalt, and STP particles are finely dispersed and uniform. The preparation process is mainly physical modification, accompanied by chemical reactions.

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Preparation and properties of a novel high-viscosity modified bitumen

Cited by 13 publications

References 47 publications

Materials Optimization and Service Performance Evaluation of a Novel Steel Bridge Deck Pavement Structure: A Case Study

Materials Optimization and Service Performance Evaluation of a Novel Steel Bridge Deck Pavement Structure: A Case Study

Research on Material Composition Design of Porous Asphalt Mixture Based on Flyaway Characteristics

Using SBS/terpene‐styrene resin blends as a novel high‐viscosity asphalt modifier

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