The rheological properties of different types of asphalt binders were studied and compared considering their constituents and physical characteristics. The saturate, aromatic, resin, and asphaltene (SARA) analysis and differential scanning calorimetry (DSC) have shown their individual constituents and two distinct glass transition temperatures, indicating the phase changes of the two main components of the asphalt binders, namely asphaltenes and maltenes. Rheological characterization was performed over a wide range of temperatures (−10°C‐60°C) showing that these materials may exhibit viscoelastic solid to viscous liquid behaviour. Master curves of complex viscosity, storage modulus, and loss modulus were constructed by applying the time‐temperature superposition principle, which was found applicable over the temperature range considered. Stress relaxation and steady‐shear test were applied to the samples in order to determine their rheological behaviour in the nonlinear viscoelastic regime (viscosity and nonlinear relaxation modulus). The rheological results were modelled and revealed that the Kaye‐Bernstein‐Kearsley‐Zappas (K‐BKZ) constitutive equation is suitable in representing the rheological behaviour of asphalts. The SARA analysis and rheological measurements were found to be compatible.

中文翻译：

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沥青粘合剂的热流变性

研究并比较了不同类型沥青粘合剂的流变性能，并考虑了它们的组成和物理特性。饱和，芳香族，树脂和沥青质（SARA）分析和差示扫描量热法（DSC）显示了它们各自的成分和两个不同的玻璃化转变温度，表明沥青粘合剂的两个主要成分即沥青质和麦芽烯的相变。 。在很宽的温度范围（-10°C-60°C）下进行了流变学表征，表明这些材料可能表现出粘弹性的固体到粘稠的液体行为。应用时间-温度叠加原理构建了复数粘度，储能模量和损耗模量的主曲线，发现该主曲线在所考虑的温度范围内适用。为了确定样品在非线性粘弹性状态下的流变行为（粘度和非线性松弛模量），采用了应力松弛和稳态剪切试验。对流变结果进行建模，结果表明，Kaye-Bernstein-Kearsley-Zappas（K-BKZ）本构方程适用于表示沥青的流变行为。发现SARA分析和流变学测量是兼容的。