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多因素作用下聚磷酸（PPA）改性沥青结合料蠕变-恢复行为的试验研究

Experimental Study on Creep-Recovery Behavior of Polyphosphoric Acid (PPA) Modified Asphalt Binders under Multiple Factors.

作者信息

Jiang Shuangquan, Jiang Xiuming, Li Huifeng, Ding Zhan, Li Peilong, Zhou Mingkai

机构信息

School of Highway, Chang'an University, Xi'an 710064, China.

Sichuan Road and Bridge (Group) Co., Ltd., Chengdu 610041, China.

出版信息

Materials (Basel). 2023 Mar 29;16(7):2740. doi: 10.3390/ma16072740.

DOI:10.3390/ma16072740
PMID:37049032
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10095739/
Abstract

The polyphosphoric acid (PPA) modified asphalt binder is a potential choice as one of the pavement materials for its excellent high-temperature performance and low cost. To further analyze the influences of temperature and load on the service life of pavement from the perspective of deformation behavior, six kinds of asphalt binders with different PPA dosages were prepared for Multiple Stress Creep and Recovery (MSCR) tests at five temperature levels. The deformation behavior is investigated by basic deformation parameters, rheological simulation, and energy parameter changes. The results show that the percent recovery (R) drops sharply while non-recoverable creep compliance (Jnr) goes up slightly with the increase in temperature. Three-element model, composed by E1, η1, and η2, can be used to describe the creep behavior. PPA-modified asphalt binder exhibits nonlinear creep behavior, and the logarithmic model can simulate recovery behavior better than the power-law model. Stored energy and dissipated energy can characterize the change of energy in the creep process under different conditions and show a significant correlation to deformation parameters. It is concluded that the elastic component of asphalt binders is increased by PPA, which is beneficial to the improvement of the deformation resistance and recovery capacity of asphalt binders. The recommended dosage of PPA is 1.5%. This investigation is conducive to a better understanding of the deformation behavior of PPA-modified asphalt binders and provides a reference for its engineering applications.

摘要

聚磷酸（PPA）改性沥青结合料因其优异的高温性能和低成本，作为路面材料之一是一种潜在选择。为了从变形行为角度进一步分析温度和荷载对路面使用寿命的影响，制备了六种不同PPA剂量的沥青结合料，在五个温度水平下进行多应力蠕变恢复（MSCR）试验。通过基本变形参数、流变模拟和能量参数变化来研究变形行为。结果表明，随着温度升高，恢复百分比（R）急剧下降，而非恢复性蠕变柔度（Jnr）略有上升。由E1、η1和η2组成的三元模型可用于描述蠕变行为。PPA改性沥青结合料表现出非线性蠕变行为，对数模型比幂律模型能更好地模拟恢复行为。储能和耗能可表征不同条件下蠕变过程中的能量变化，且与变形参数具有显著相关性。得出结论：PPA增加了沥青结合料的弹性成分，有利于提高沥青结合料的抗变形能力和恢复能力。PPA的推荐剂量为1.5%。本研究有助于更好地理解PPA改性沥青结合料的变形行为，并为其工程应用提供参考。

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本文引用的文献

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Materials (Basel). 2023 Jan 20;16(3):978. doi: 10.3390/ma16030978.
2
Effects of Field Aging on Material Properties and Rutting Performance of Asphalt Pavement.场老化对沥青路面材料性能和车辙性能的影响。
Materials (Basel). 2022 Dec 26;16(1):225. doi: 10.3390/ma16010225.
3
Research of Low-Temperature Performance of Polyphosphoric Acid-Modified Asphalt.聚磷酸改性沥青低温性能研究
Materials (Basel). 2022 Dec 22;16(1):111. doi: 10.3390/ma16010111.
4
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5
Influence of Compound Modification of Oil Sands De-Oiled Asphalt and Polyphosphoric Acid on High- and Low-Temperature Performance of Styrene-Butadiene-Styrene-Modified Asphalt.油砂脱油沥青与多聚磷酸复合改性对苯乙烯-丁二烯-苯乙烯嵌段共聚物改性沥青高低温性能的影响
Materials (Basel). 2021 Feb 8;14(4):797. doi: 10.3390/ma14040797.