Analysis and application of relationships between low-temperature rheological performance parameters of asphalt binders

Liu, Shutang; Cao, Weidong; Shang, Shujie; Qi, Hui; Fang, Jianguo

doi:10.1016/j.conbuildmat.2009.10.015

Cited by 112 publications

(18 citation statements)

References 5 publications

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“…The Burgers model is composed of the Maxwell and Kelvin models. They are two basic models reflecting the stress relaxation and rheological or creep, respectively [40,41]. According to the research results [28], the penetration depth of the indentation increases with the time given by the well-known Hertz equation with the addition of a time-dependent exponential, as shown in Equation ( 7).…”

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

“…The relaxation time is a quantitative indicator representing the stress change with time. It is important to evaluate the stress relaxing rate and stress dissipation property [40]. To determine the relaxation time (λ), the following equation is obtained.…”

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

“…In a mechanical point of the viscoelastic model, the ideal spring element and dashpot element in the Maxwell or Kelvin models simulate energy storage and consumption, respectively. The parameters of E, η, and t are used to indicate the capacity of the energy storage and dissipation [40]. Stored energy and dissipated energy are calculated by Equations ( 9) and (10).…”

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

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Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Huang

Liao

et al. 2020

Materials

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The interfacial zone between aggregate particles and asphalt mortar presents a significant effect on the strength of an asphalt mixture. In this paper, basalt, limestone, and diabase were selected, and the influence of these aggregates on the mechanical characteristics and microstructures of the interfacial zone was investigated. Nanoindentation was employed to measure the change law of mechanical behavior in the region of the interfacial zone, and corresponding viscoelastic parameters were deduced; microstructural morphology was observed by scanning electron microscopy, and the effect of the mineralogical components on the interfacial zone was analyzed as well. Results show that the mechanical behavior of the interfacial transition zone is complicated. The modulus and hardness of asphalt mortar decrease with the increases in the aggregate surface distance, and then keep stable after the distance is greater than 40 μm. Both the relaxation time and dissipated energy ratio of the interfacial zone affected by the different aggregate types show a similar change law. These states indicate that aggregate types have little influence on the stress dissipation of asphalt mortar. However, creep compliances that quantify the ability of the deformation resistance show a significant difference; microstructure morphologies of the interfacial zone are affected by aggregates obviously, and micro pores present a different distribution and state in the interfacial zone.

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Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

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Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Huang

Liao

et al. 2020

Materials

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“…Based on BBR, Liu proposed the use of m/S and dissipated energy to reveal the physical relationship between low-temperature performance parameters and other parameters [14]. Some viscoelastic physical models, such as the Burgers model, and mathematical models, such as the Christensen-Anderson-Marasteanu model, are also applied to clearly elucidate the essential anti-cracking properties of asphalt [13,[15][16][17]. However, the relationship between rheological properties at low-temperatures and the microstructure characters of polymer-modified asphalt is still unknown.…”

Section: Of 14mentioning

confidence: 99%

Role of Aliphatic Chain Characteristics on the Anti-Cracking Properties of Polymer-Modified Asphalt at Low Temperatures

et al. 2019

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The anti-cracking properties of polymer-modified asphalt depend largely on the molecular structure of the polymer modifier. However, the mysterious structure-performance relationship is still elusive. In this paper, three kinds of polymers with different chain structures were selected to address this issue. The indices of styrene, trans-butadiene, aliphatic branched-chain, and aliphatic long-chain from the infrared spectrum were used to quantify the functional group compositions of polymer modifiers. Viscoelastic parameters, including relaxation time, dissipation energy ratios, and stiffness were assessed to illustrate the anti-cracking properties of polymer-modified asphalt. Results showed that relaxation time and dissipation energy ratios were mainly determined by the polymer network strength, molecular size, aliphatic chain feature, and the orientations speed of aliphatic chains. The short relaxation time and high dissipation ratio lead to the low stiffness and favorable low-temperature performance of asphalt. The improvement of these performances requires a polymer with high indices of an aliphatic long-chain, styrene, aliphatic branched-chain, and trans-butadiene, respectively. An aliphatic-long chain, aliphatic branched-chain, and trans-butadiene were soft segments in asphalt while styrene was the rigid segment. The soft segments affect the intramolecular friction, orientation, and thermal motion at low temperatures, whereas the rigid segment enhances the strength of polymer networks. Thus, the anti-cracking property of polymer-modified asphalt can be improved by adjusting the ratio of soft and rigid segments in the polymer modifier.

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“…Following the standard procedure, the flexural creep stiffness and creep rate (m-value) are evaluated at a loading time of 60 s. Furthermore, critical low temperatures Tc,S and Tc,m are determined as temperatures at which the criteria S(60 s) = 300 MPa and m(60 s) = 0.30, respectively, are met.The BBR data was further analyzed by calculating the ratio of the flexural creep stiffness to the creep rate, S/m, and the temperature difference ΔTc = Tc,S -Tc,m. The S/m value is directly related to the rate of creep compliance J'(t) and to the amount of dissipated energy[59], and it has been proposed as a physically meaningful indicator of the low-temperature anti-cracking performance of asphalt binders[60]. Correspondingly, ΔTc can be used to describe the nonload related cracking potential of asphalt binders[61].…”

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confidence: 99%

Low-temperature rheological and morphological characterization of SBS modified bitumen

Laukkanen

Soenen

Winter

et al. 2018

Construction and Building Materials

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Polymer modification is widely used to improve the engineering properties of bitumen, the most commonly used polymer modifier being styrene-butadiene-styrene (SBS) block copolymer. Although extensive studies have been performed on polymer modified bitumen (PMB), no reliable data is currently available on the effect of polymer modification on the dynamic rheological properties at low temperatures. In this study, we focus on the rheology of SBS modified bitumen near and below the glass transition temperature (Tg) using the 4-mm DSR technique. In addition, fluorescence microscopy and temperature-modulated differential scanning calorimetry are used to study the phase behavior and interactions in the SBS-bitumen blends. At high SBS concentrations, thermorheological complexity is observed in the investigated temperature range, attributable to the formation of a continuous SBS-rich network structure. In the case of compatible SBS-bitumen blends, a linear correlation is established between the flexural creep stiffness measured by bending beam rheometry (BBR) and the complex shear modulus measured by 4-mm DSR. Deviations from this linear trend are shown to result from the macro-phase separation induced by the poor compatibility of SBS and bitumen.

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Analysis and application of relationships between low-temperature rheological performance parameters of asphalt binders

Cited by 112 publications

References 5 publications

Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Role of Aliphatic Chain Characteristics on the Anti-Cracking Properties of Polymer-Modified Asphalt at Low Temperatures

Low-temperature rheological and morphological characterization of SBS modified bitumen

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