Influence of ethylene-vinyl acetate on the performance improvements of low-density polyethylene-modified bitumen

Yan, Kezhen; Hong, Zhe; You, Lihua; Ou, Jianliang; Miljković, Miomir

doi:10.1016/j.jclepro.2020.123865

Cited by 32 publications

(15 citation statements)

References 37 publications

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“…Te slower the loading speed, the more pronounced the viscous characteristics, and the faster the loading, the more pronounced the elastic characteristics. Te simulation of the taxiing state of the aircraft on the airport pavement can be performed by frequency sweeping to achieve [40]. Te frequency sweep results of the four emulsifed asphalts at diferent temperatures are shown in Figures 8 and 9.…”

Section: Frequency Sweepmentioning

confidence: 99%

Composition and Performance Evaluation of SBS/SBR Modified Emulsified Asphalt for Tack Coat on Airport Pavement

Wang

Xie

et al. 2022

Advances in Materials Science and Engineering

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Asphalt concrete pavement is gradually being adopted in cement concrete pavement repair and paving due to its short construction period and low vibration to aircraft. However, the performance of the interlayer binder is the critical factor affecting the paving effect. For the preparation of interlayer high-performance emulsified asphalt suitable for airport pavement, the type and dosage of modifier and emulsifier were taken as factors and levels for the orthogonal test. Combined with the evaporation residue, softening point, penetration, ductility, and Engla viscosity indexes, the range analysis was carried out to determine the optimal dosage of modifier and emulsifier. Furthermore, the dynamic shear rheology test (DSR), fluorescence microscope test, TG-DSC test, and shear and tensile tests were used to evaluate the technical properties of SBS/SBR modified emulsified asphalt. These results showed that the best blending mass ratio of SBS/SBR modified emulsified asphalt is 1.5% SBS + 3% SBR + 1% emulsifier. Temperature sweep at 48°C, compared with SBS/SBR modified emulsified asphalt, the complex shear modulus (G ∗ ) of SBS/SBR modified emulsified asphalt increased by 71% and 75%, while the rutting factor(G ∗ /sinδ) increased by 83% and 86%, respectively, which indicates that its shear deformation resistance and rutting resistance have been significantly improved. The Han curve indicates that the SBS/SBR modifier has excellent compatibility with asphalt and can maintain a stable state at a lower frequency. Before demulsification, SBS/SBR modifier and emulsified asphalt formed a stable spatial network structure. After demulsification, the continuous phase and the dispersed phase were more closely integrated, so that the emulsified asphalt exhibited better bonding performance. At different temperatures, by increasing the spraying volume, the shear and tensile strength of SBS/SBR modified emulsified asphalt increased first and then decreased. At 25°C, the maximum shear and tensile strengths are 0.86 MPa and 0.65 MPa. This study demonstrated that SBS/SBR modified emulsified asphalt formed a stable spatial network structure, giving it excellent technical properties, and can be widely used for tack coat on airport pavement.

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Section: Frequency Sweepmentioning

confidence: 99%

Composition and Performance Evaluation of SBS/SBR Modified Emulsified Asphalt for Tack Coat on Airport Pavement

Wang

Xie

et al. 2022

Advances in Materials Science and Engineering

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“…The process of modi cation involves the amalgamation of polymers with asphalt cement. This approach effectively bolsters resistance against pavement deterioration within intermediate to hightemperature ranges while maintaining a manageable viscosity during mixing (Yan et al, 2021;Vargas & El Hanandeh, 2021). More recently (Zhu (Zhu, 2015) has shown that combining modi ed asphalt cements and original binder with additive modi ers has performed well in the pavement industry for over 30 years.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Batu Bahat Soft Clay on the Properties of Modified Asphalt Binders

Allam,

Ali,

Emmaima

et al. 2024

Preprint

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Various materials have been employed globally to enhance road performance by modifying asphalt binders and mixtures. Polymers and nanomaterials are notable for their capacity to enhance the physical and rheological characteristics of modified asphalt cement. This research introduces a new natural modifier called Batu Pahat Soft Clay (BPSC) for asphalt cement. Various amounts of BPSC (2%, 4%, 6%, and 8% by weight of asphalt cement) were examined using conventional techniques like dynamic shear rheometer (DSR), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and surface energy tests. The results revealed substantial enhancements in physical properties, with penetration increasing by 4% and softening points decreasing by 22%. Moreover, the susceptibility of the modified binder to elevated temperatures was reduced by 10% compared to the base asphalt cements. SEM analysis confirmed uniform dispersion of BPSC particles, resulting in increased binder stiffness. The rheological properties saw remarkable improvement, particularly at temperatures of 45°C and 70°C, with enhancements of up to 142% and 99%, respectively. The ability to recover under various stress levels showcased the superior performance of the modified binder, with improvements of 90%, 76%, and 67% compared to the base asphalt cements.

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“…Asphalt is a viscoelastic material that has gradually become one of the most widely used road pavement materials in China [ 1 , 2 ] due to advantages including low noise and surface evenness. However, in recent years, with the increase of heavy vehicles and the complexity of paved environments, ordinary matrix asphalt is sensitive to the subsequent changes in external temperature.…”

Section: Introductionmentioning

confidence: 99%

Selecting the Best Performing Modified Asphalt Based on Rheological Properties and Microscopic Analysis of RPP/SBS Modified Asphalt

Zhang²,

Ji³

et al. 2022

Materials

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As an asphalt modifier, waste polypropylene (RPP) can not only optimize the performance of asphalt but also greatly alleviate the problem of waste plastic treatment, effectively reducing environmental pollution and resource waste. In order to evaluate the influence of RPP and styrene butadiene styrene (SBS) on asphalt performance, the application of RPP in modified asphalt pavement has been expanded. In this study, a dynamic shear rheometer (DSR), bending beam rheometer (BBR) and other instruments were used to evaluate the rheological properties of composite-modified asphalt. Fourier infrared spectroscopy (FTIR) and fluorescence microscopy (FM) was employed to conduct a microscopic analysis of the modified asphalt, and the layer analysis method was adopted to determine the optimal RPP content. The test results show that the rheological properties of asphalt are significantly improved by the composite modification of RPP and SBS. In addition, the cross-linking between polymer and asphalt is further enhanced by the composite addition of RPP and SBS. The comprehensive performance of modified asphalt is optimized at the RPP content of 2%, which is suitable for applications in the cold temperate zone. The RPP/SBS composite-modified asphalt is able to improve the utilization rate of RPP and has good environmental and economic benefits, thus exhibiting excellent comprehensive performance. However, the optimal asphalt content in the mixture was not investigated, and the economic benefits brought by the utilization of RPP were not evaluated and require further study.

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Influence of ethylene-vinyl acetate on the performance improvements of low-density polyethylene-modified bitumen

Cited by 32 publications

References 37 publications

Composition and Performance Evaluation of SBS/SBR Modified Emulsified Asphalt for Tack Coat on Airport Pavement

Composition and Performance Evaluation of SBS/SBR Modified Emulsified Asphalt for Tack Coat on Airport Pavement

The Impact of Batu Bahat Soft Clay on the Properties of Modified Asphalt Binders

Selecting the Best Performing Modified Asphalt Based on Rheological Properties and Microscopic Analysis of RPP/SBS Modified Asphalt

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