沥青
液体粘度的温度依赖性
粘度
材料科学
剪切速率
相对粘度
热力学
阿累尼乌斯方程
天然橡胶
流变学
压实
还原粘度
复合材料
活化能
化学
物理
有机化学
作者
Yong Feng Yan,Rongxin Guo,Cheng Cheng,Chaoshu Fu,Yang Yang
出处
期刊:Polymer Testing
[Elsevier]
日期:2022-09-01
卷期号:113: 107666-107666
被引量:13
标识
DOI:10.1016/j.polymertesting.2022.107666
摘要
Viscosity is a physical indicator of the flow behavior of asphalt at high temperatures, and the mixing and compaction quality of asphalt mixtures depends on it; however, previous studies cannot effectively guide the application of natural rubber-modified asphalt (NRMA). In this investigation, the effects of the natural rubber latex (NRL) dose, test temperature and shear rate on the apparent viscosity of NRMA were evaluated. The results show that viscosity is approximately positively correlated with NRL dose, as described by an exponential equation that is based on Einstein's equation. Meanwhile, viscosity is negatively correlated with test temperature and shear rate, in accordance with the Arrhenius equation and power law equation, respectively. A three-factor physical equation was established to describe the relationship between viscosity and NRL dose, temperature and shear rate on the basis of the equations above, which can predict the viscosity over a wider range with limited experimental data, thereby overcoming experimental limitations. This study provides a prediction model for quickly determining the viscosity. This model is not only applicable to NRMA but also can provide references for the study of viscosity prediction for other polymer-modified asphalts.
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