Workability of rubberized asphalt from a perspective of particle effect

Yu Huayang; Deng Guansen; Zhang Zeyu; Zhu Minye; Gong Minghui; Oeser Markus

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Workability of rubberized asphalt from a perspective of particle effect

机译：粒子效应视角下橡胶沥青的可加工性

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Previous studies have documented the disconnect between the rotational viscosity of asphalt rubber (AR) and the workability of AR mix. There is a possibility that the particle effect of crumb rubber modifier (CRM) particles within AR causes this phenomenon. This study measured the viscosities of ARs and the corresponding liquid phases at three temperatures. The workability of the corresponding AR mixes was evaluated using the number of gyrations of Superpave Gyratory Compactor (SGC) samples. The changes on AR caused by the CRM contents were measured using Gel permeation chromatography (GPC) test. The experimental results revealed that the rotational viscosity of the AR liquid phase is more suitable to be used as a workability indicator. In addition, thresholds of CRM content were reported. Once the threshold is exceeded, the increase in AR viscosity is only caused by the increase in CRM particle effect and there is no detectable CRM/asphalt interaction.

机译：以前的研究记录了沥青橡胶（AR）的旋转粘度与Ar混合的可加工性之间的断开。 arrumb橡胶改性剂（CRM）颗粒在Ar内的粒子效应可能导致这种现象。该研究在三个温度下测量了Ars的粘度和相应的液相。使用SuperPave响声压实机（SGC）样品的激动数来评估相应的AR混合物的可加工性。使用凝胶渗透色谱（GPC）试验测量由CRM内容物引起的AR的变化。实验结果表明，Ar液相的旋转粘度更适合用作可加工性指示剂。此外，报告了CRM含量的阈值。一旦超过阈值，AR粘度的增加仅是由CRM粒子效应的增加引起的，并且没有可检测的CRM /沥青相互作用。

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来源
《Transportation Research》 |2021年第2期|102712.1-102712.11|共11页
作者
Yu Huayang; Deng Guansen; Zhang Zeyu; Zhu Minye; Gong Minghui; Oeser Markus;
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作者单位

South China Univ Technol State Key Lab Subtrop Bldg Sci Guangzhou Peoples R China|Sichuan Prov Key Lab Higher Educ Inst Comprehens Panzhihua Peoples R China;

South China Univ Technol State Key Lab Subtrop Bldg Sci Guangzhou Peoples R China;

Rhein Westfal TH Aachen Inst Highway Engn Mies van der Rohe St Aachen Germany;

South China Univ Technol State Key Lab Subtrop Bldg Sci Guangzhou Peoples R China;

State Key Lab High Performance Civil Engn Mat Nanjing Peoples R China;

Rhein Westfal TH Aachen Inst Highway Engn Mies van der Rohe St Aachen Germany;

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原文格式 PDF
正文语种 eng
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关键词
Asphalt rubber; Particle effect; Workability; Viscosity; Interaction;

机译：沥青橡胶;粒子效果;可加工性;粘度;相互作用;

Workability of rubberized asphalt from a perspective of particle effect

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