Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures
Using an AMPT tester and based on laboratory tests, this paper performed a comparative study on the dynamic characteristics of different asphalt mixtures, analyzed the influence of different asphalt binders on the characteristic parameters of the dynamic modulus master curve and the phase angle mast...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/7/3619 |
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| author | Shijie Ma Liang Fan Tao Ma Zhao Dong Yuzhen Zhang Xiaomeng Zhang |
| author_facet | Shijie Ma Liang Fan Tao Ma Zhao Dong Yuzhen Zhang Xiaomeng Zhang |
| author_sort | Shijie Ma |
| collection | DOAJ |
| description | Using an AMPT tester and based on laboratory tests, this paper performed a comparative study on the dynamic characteristics of different asphalt mixtures, analyzed the influence of different asphalt binders on the characteristic parameters of the dynamic modulus master curve and the phase angle master curve of asphalt mixture, and expounds the evaluation function of the phase angle master curve for mixture relaxation characteristics. The results show that the modulus master curve parameters of the asphalt mixture are closely related to voids in the mineral aggregate, mixture density, and asphalt content of the asphalt mixture. For the same kind of asphalt mixture, because the gradation of mineral aggregate is fixed and the volume parameters are almost the same, the ultimate modulus of the mixture at different temperatures is unique; when the temperature changes or the asphalt changes, the shape parameter β of the modulus master curve changes regularly, which brings different dynamic responses, and the lower β will show the characteristics of a higher modulus. Asphalt is the source of the viscoelasticity of the asphalt mixture. Although the influence of particle gradation of the mixture will bring about the change of modulus, the phase angle of the mixture depends on the viscoelastic properties of asphalt, and the initial phase angle in the main curve is positively correlated with asphalt penetration and negatively correlated with the softening point and viscosity, while the peak phase angle A is negatively correlated with penetration, and the softening point viscosity is positively correlated. The viscoelastic interval, represented by ω, is negatively correlated with penetration but positively correlated with the softening point and viscosity. The peak position, parameter ωc, of the phase angle master curve can evaluate the relaxation characteristics of the mixture, and the crack resistance of different mixtures can be compared without complex model calculation. In the comparison of the relaxation time of asphalt mixture, the relaxation time of foam cold-recycled mixture is the largest, which is significantly higher than that of other forms of cement mixture; the emulsified asphalt cold-recycled mixture is equivalent to AC20 and LSPM30 mixtures; the SBS-modified asphalt mixture has the best relaxation characteristics. |
| first_indexed | 2024-03-09T12:05:54Z |
| format | Article |
| id | doaj.art-9d7432c556954459b487fd6c688e0b81 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T12:05:54Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9d7432c556954459b487fd6c688e0b812023-11-30T22:58:14ZengMDPI AGApplied Sciences2076-34172022-04-01127361910.3390/app12073619Dynamic Characteristic Master Curve and Parameters of Different Asphalt MixturesShijie Ma0Liang Fan1Tao Ma2Zhao Dong3Yuzhen Zhang4Xiaomeng Zhang5Shandong Transportation Institute, Jinan 250012, ChinaShandong Transportation Institute, Jinan 250012, ChinaSchool of Transportation, Southeast University, Nanjing 211189, ChinaShandong Transportation Institute, Jinan 250012, ChinaCollege of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, ChinaShandong Transportation Institute, Jinan 250012, ChinaUsing an AMPT tester and based on laboratory tests, this paper performed a comparative study on the dynamic characteristics of different asphalt mixtures, analyzed the influence of different asphalt binders on the characteristic parameters of the dynamic modulus master curve and the phase angle master curve of asphalt mixture, and expounds the evaluation function of the phase angle master curve for mixture relaxation characteristics. The results show that the modulus master curve parameters of the asphalt mixture are closely related to voids in the mineral aggregate, mixture density, and asphalt content of the asphalt mixture. For the same kind of asphalt mixture, because the gradation of mineral aggregate is fixed and the volume parameters are almost the same, the ultimate modulus of the mixture at different temperatures is unique; when the temperature changes or the asphalt changes, the shape parameter β of the modulus master curve changes regularly, which brings different dynamic responses, and the lower β will show the characteristics of a higher modulus. Asphalt is the source of the viscoelasticity of the asphalt mixture. Although the influence of particle gradation of the mixture will bring about the change of modulus, the phase angle of the mixture depends on the viscoelastic properties of asphalt, and the initial phase angle in the main curve is positively correlated with asphalt penetration and negatively correlated with the softening point and viscosity, while the peak phase angle A is negatively correlated with penetration, and the softening point viscosity is positively correlated. The viscoelastic interval, represented by ω, is negatively correlated with penetration but positively correlated with the softening point and viscosity. The peak position, parameter ωc, of the phase angle master curve can evaluate the relaxation characteristics of the mixture, and the crack resistance of different mixtures can be compared without complex model calculation. In the comparison of the relaxation time of asphalt mixture, the relaxation time of foam cold-recycled mixture is the largest, which is significantly higher than that of other forms of cement mixture; the emulsified asphalt cold-recycled mixture is equivalent to AC20 and LSPM30 mixtures; the SBS-modified asphalt mixture has the best relaxation characteristics.https://www.mdpi.com/2076-3417/12/7/3619asphalt mixturemaster curvecharacteristic parameterrelaxation characteristicscold recyclingfoamed asphalt |
| spellingShingle | Shijie Ma Liang Fan Tao Ma Zhao Dong Yuzhen Zhang Xiaomeng Zhang Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures Applied Sciences asphalt mixture master curve characteristic parameter relaxation characteristics cold recycling foamed asphalt |
| title | Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures |
| title_full | Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures |
| title_fullStr | Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures |
| title_full_unstemmed | Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures |
| title_short | Dynamic Characteristic Master Curve and Parameters of Different Asphalt Mixtures |
| title_sort | dynamic characteristic master curve and parameters of different asphalt mixtures |
| topic | asphalt mixture master curve characteristic parameter relaxation characteristics cold recycling foamed asphalt |
| url | https://www.mdpi.com/2076-3417/12/7/3619 |
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