Analysis of viscoelastic response and creep deformation mechanism of asphalt mixture

Li, Peilong; Jiang, Xiuming; Guo, Kai; Xue, Yu; Dong, Hao

doi:10.1016/j.conbuildmat.2018.03.104

Cited by 42 publications

(21 citation statements)

References 7 publications

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“…Pasetto et al introduced a visco-elasto-plastic constitutive model for the characterisation of stress-strain behaviour in bituminous mixtures [35]. Li et al obtained the Burger’s viscoelastic parameters including E-1, eta (1) E-2, eta (2) and the steady-state creep rate K according to the creep curve, and analyzed the effects of test temperature, stress level and aggregate gradation on the viscoelastic parameters of asphalt mixture [36].…”

Section: Resultsmentioning

confidence: 99%

Evaluating the Effect of Hydrophobic Nanosilica on the Viscoelasticity Property of Asphalt and Asphalt Mixture

Guo

Chang

et al. 2018

Materials

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Viscoelasticity property of bitumen is closely related to the service life of bituminous pavement. This paper evaluated the impact of one of the most efficient and widely used nanomaterials in various industries called hydrophobic nanosilica on the viscoelasticity property of bitumen and asphalt mixture. In this paper, three hydrophobic nanosilica modified bitumens and asphalt mixtures were researched by conventional physical properties test, SEM test, FTIR test, DSC test, DSR test, static creep test and dynamic creep test. The results showed that the introduction of hydrophobic nanosilica could strengthen the viscosity of asphalt more effectively and had better dispersion than hydrophilic nanosilica in asphalt. From conventional physical properties test and rheological performance test, hydrophobic nanosilica could weaken the temperature susceptibility of bitumen observably. From DSR test, hydrophobic nanosilica modified asphalt had a lower sensitivity and dependence on temperature and frequency than hydrophilic nanosilica modified asphalt. The Cole–Cole diagrams indicated that hydrophobic nanosilica exhibited good compatibility with asphalt compared with hydrophilic nanosilica. Newly formed chemical bonds were found in the hydrophobic nanosilica modified asphalt and its mixture with stone according to SEM test, FTIR test, and DSC test, which is the biggest difference from the modification mechanism of hydrophilic nanosilica modified asphalt. Through static and dynamic creep test, it found that the addition of hydrophobic nanosilica can significantly reduce the creep strain at the same temperature.

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Section: Resultsmentioning

confidence: 99%

Evaluating the Effect of Hydrophobic Nanosilica on the Viscoelasticity Property of Asphalt and Asphalt Mixture

Guo

Chang

et al. 2018

Materials

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“…According to the Arrhenius equation, there is a relationship between the shift factors of asphalt mixture and the experimental temperatures, which is shown in Equation 11 [25,40]. Using the Origin numerical processing software, the trends of shift factors with test temperatures for three asphalt mixtures are fitted by the Arrhenius equation.…”

Section: Creep Compliance Of Asphalt Mixtures At Different Temperaturesmentioning

confidence: 99%

“…To better characterize the creep properties of the three types of asphalt mixtures, the Burgers model and the generalized Kelvin model are used to fit the curve of the creep compliances (J(t)) of the asphalt mixtures with time. The expressions of the Burgers model and the generalized Kelvin model are shown in Equation (12) and (13), respectively [25,41,42].…”

Section: Fitting Analyses Of Creep Compliancementioning

confidence: 99%

“…However, the parameters obtained by the Burgers model can better reflect the changes of viscoelastic properties of three asphalt mixtures with temperature, which are characteristics not reflected in the generalized Kelvin model. [25]. According to the parameters of the Burgers model in Table 7, it can be seen that compared to AM, as the test temperature from 50 • C to −20 • C at 10 • C decrements, the E 1 values of DBFAM increase by 14.9%, 40.3%, 51.28%, 81.62%, 102.0%, 103.1%, and 202.0%, and the E 1 values of SBSAM increase by −19.1%, 11.32%, 5.37%, −1.49%, 11.16%, 10.3%, 9.2%, and 13.6%, respectively.…”

Section: Fitting Analyses Of Creep Compliancementioning

confidence: 99%

“…It can be found from the above that DBFAM and SBSAM have outstanding high-and lowtemperature properties, yet less work has been done to study the creep and relaxation properties of DBFAM and SBSAM. Asphalt mixtures have typical viscoelastic properties in working temperature range, and their mechanical properties are closely related to the loading time and ambient temperature [23][24][25]. Moreover, many linear viscoelastic models (e.g., Burgers model, generalized Kelvin model, and generalized Maxwell model) and nonlinear viscoelastic models (e.g., Schapery's model) were applied to analyze creep and relaxation properties of asphalt mixtures [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Cheng

et al. 2019

Applied Sciences

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To obtain the viscoelastic parameters of asphalt mixtures and analyze the effect of temperatures and modifiers on viscoelastic properties of asphalt mixtures, the creep compliances of the neat asphalt mixture (AM), compound diatomite and basalt fibers reinforced asphalt mixture (DBFAM), and styrene-butadiene-styrene modified asphalt mixture (SBSAM) were tested and calculated by the static creep tests. And the creep compliances of the three asphalt mixtures at −20 °C, −10 °C, and 0 °C are deducted by the time–temperature equivalence principle (TTEP) and Arrhenius equation. Further, the relaxation modulus of the three asphalt mixtures from −20 °C to 50 °C at 10 °C increments are calculated by the convolution integral and Simpson method. Subsequently, the Burgers model, the generalized Kelvin model, and the generalized Maxwell model are applied to analyze the viscoelastic properties of the three asphalt mixtures at different temperatures. The results show that the generalized Kelvin model and the generalized Maxwell model are superior to the Burgers model in describing the variation of viscoelastic properties of asphalt mixtures with loading time. At low temperatures, asphalt mixtures have excellent properties in resisting permanent deformation and releasing internal stress. Besides, the addition of SBS modifier and compound diatomite and basalt fibers modifier can significantly raise the viscosity η1 and the elastic modulus E1 of the asphalt mixture, respectively.

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Matching Relationships for Mechanical Parameters of Asphalt Pavement Materials Considering Difference in Tension and Compression

Pan

Zhou²,

Zheng³

et al. 2022

Int. J. Pavement Res. Technol.

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Analysis of viscoelastic response and creep deformation mechanism of asphalt mixture

Cited by 42 publications

References 7 publications

Evaluating the Effect of Hydrophobic Nanosilica on the Viscoelasticity Property of Asphalt and Asphalt Mixture

Evaluating the Effect of Hydrophobic Nanosilica on the Viscoelasticity Property of Asphalt and Asphalt Mixture

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Matching Relationships for Mechanical Parameters of Asphalt Pavement Materials Considering Difference in Tension and Compression

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