Study on the Road Performance of Foamed Warm-Mixed Reclaimed Semi-Flexible Asphalt Pavement Material

Xie, Jiawen; Huang, Wenke; Hu, Bei; Xiao, Zhicheng; Hassan, Hafiz Muhammad Zahid; Wu, Kuanghuai

doi:10.3390/ma14185379

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…Xie [40] analyzed the grey correlation of various road performance factors with warmmix recycled semi-flexible materials. It was found that the multiple factors have different degrees of influence on the road performance of warm-mix recycled semi-flexible materials and that these factors constrain each other.…”

Section: Grey Correlation Analysis Methodsmentioning

confidence: 99%

Grey Correlation Analysis of Physical Properties and Evaluation Index of Graphene-Oxide-Modified Asphalt

Wang

Zhang

et al. 2022

Coatings

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The purpose of this study is to analyze the behavior of the performance index of graphene-oxide-modified asphalt. The deviation problem caused by determining graphene oxide content by single performance or several independent properties is also investigated. By testing the physical properties of graphene-oxide-modified asphalt with different admixtures (0%, 0.5%, 1.0%, 1.5%, 2.0% by mass) in terms of viscosity, penetration, softening point, ductility, rheology, etc., it is concluded that the addition of graphene oxide could improve the individual properties of the matrix asphalt by 3% to 250%. Moreover, the grey correlation analysis method is used to calculate and analyze the correlation between the performance of graphene-oxide-modified asphalt and the content of graphene oxide. The latter has the most significant effect on the softening point, the penetration, and the 135 °C Brookfield viscosity of modified asphalt. The content of graphene oxide in graphene-oxide-modified asphalt is calculated based on the above three performance indexes, and an estimation error of less than 0.15% is observed. This proves that the new determination method is reasonable. Finally, by combining the macroscopic properties and the multi-factor statistical analysis, a reference basis is provided for the quality control of the graphene-oxide-modified asphalt.

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Section: Grey Correlation Analysis Methodsmentioning

confidence: 99%

Grey Correlation Analysis of Physical Properties and Evaluation Index of Graphene-Oxide-Modified Asphalt

Wang

Zhang

et al. 2022

Coatings

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“…Based on the above analysis, there existed a certain regularity in the chemical components and rheological properties of asphalt during aging. Concerning existing studies, the grey relation theory [41,42] was introduced in this study to analyze the molecular rheological properties. The grey relation theory can be used to analyze data based on a small sample and poor information and to describe the relationship between each factor and the system development in terms of degree.…”

Section: Grey Correlation Analysis Of Molecular Components and Rheolo...mentioning

confidence: 99%

Study of the Molecular Components and Rheological Properties of Asphalt after Long-Term Aging under the Action of Moisture

Luo

Xie

Zhao³

et al. 2022

Sustainability

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This study aimed to investigate variations and relationships between molecular components and rheological properties during the long-term aging of SBS-modified asphalt by the action of moisture. The chemical components and changes in molecular weight during aqueous PAV aging were observed using a four-component test and GPC test, and these morphological changes were quantified. Viscosity tests, time-scan tests and damage-healing tests were carried out to investigate the rheological properties during the aging process. Finally, the mechanism of asphalt aging under the influence of moisture was discussed. The results showed that moisture facilitated the long-term aging of asphalt and complicated the aging behavior under pressure-aging conditions. The dissolution of certain hydrophilic groups may be responsible for the decrease in resin content. The fatigue and self-healing properties of asphalt were weakened by moisture during the aging process. This was mainly attributed to a decrease in the composition of the asphalt colloidal dispersion medium, which resulted in earlier and faster development of microcracks under repeated loading as well as retardation in the rate of asphalt surface approach, wetting and spreading. Under long-term aging in the presence of moisture, the molecular components of the asphalt showed significant correlations with the rheological properties. The results of this study can contribute to further explaining the influence of moisture on the thermal-oxidative aging of asphalt.

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“…In recent years, China has strengthened the research on semi-flexible pavement materials, and some cities have paved semi-flexible pavement test sections, such as Quanzhou, Nanjing, Suzhou, etc. These test sections have proved that road performance of the semi-flexible material was excellent [14]. At present, the research on semi-flexible pavement materials mainly focuses on the mix design of matrix asphalt mixture and high-performance cement grouting material [15][16].…”

Section: Introductionmentioning

confidence: 97%

Improvement of the Low-Temperature Cracking and Shear Resistance of Semi-Flexible Mixture Modified by Polymers

2023

jmpd

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Semi-flexible mixture, as a rigid and flexible pavement material, has good rutting resistance and water stability, but its low-temperature cracking and shear resistance are poor. This paper studies and characterizes the low-temperature cracking resistance and shear resistance of semi-flexible mixtures modified by redispersible emulsion powder and epoxy resin. The performance of matrix asphalt mixture and cement grouting material with different polymer contents were investigated. The flexural and shear performance of polymer-modified semi-flexible mixtures were measured based on low-temperature bending test and direct shear test. The results indicate that the addition of polymers, especially epoxy resin, can significantly improve the failure strain, flexural strength, stiffness modulus and shear strength of semi-flexible mixture, thus enhancing its lowtemperature cracking and shear resistance.

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Study on the Road Performance of Foamed Warm-Mixed Reclaimed Semi-Flexible Asphalt Pavement Material

Cited by 8 publications

References 18 publications

Grey Correlation Analysis of Physical Properties and Evaluation Index of Graphene-Oxide-Modified Asphalt

Grey Correlation Analysis of Physical Properties and Evaluation Index of Graphene-Oxide-Modified Asphalt

Study of the Molecular Components and Rheological Properties of Asphalt after Long-Term Aging under the Action of Moisture

Improvement of the Low-Temperature Cracking and Shear Resistance of Semi-Flexible Mixture Modified by Polymers

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