| 基于动态剪切流变的沥青高温性能评价 |
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| 引用本文： | 王鹏,王立志,任瑞波,徐鸿飞. 基于动态剪切流变的沥青高温性能评价[J]. 石油沥青, 2011, 25(5): 36-40 |
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| 作者姓名： | 王鹏 王立志 任瑞波 徐鸿飞 |
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| 作者单位： | 山东建筑大学道路工程实验室,济南,250101 |
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| 摘 要： | 通过动态剪切流变仪研究五种沥青高温特性,结合沥青混合料车辙动稳定度,分析不同指标对沥青高温性能的辨别力。研究表明:等效粘度η′=sinδ-4.862 8G*/ω预估60℃粘度值与车辙动稳定度评价结果一致,真空毛细管测定SBS粘度值偏大。橡胶改性沥青She-noy参数、TG*/sinδ、G*/sinδ值均最大,但其动稳定度却低于复合改性沥青。复合改性沥青的评价有待进一步研究。
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| 关 键 词： | 高温性能 DSR 橡胶沥青 粘度 |
High Temperature Performance Evaluation of Asphalt Binders Based on Dynamic Shear Rheometer |
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| Wang Peng,Wang Lizhi,Ren Ruibo,Xu Hongfei. High Temperature Performance Evaluation of Asphalt Binders Based on Dynamic Shear Rheometer[J]. Petroleum Asphalt, 2011, 25(5): 36-40 |
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| Authors: | Wang Peng Wang Lizhi Ren Ruibo Xu Hongfei |
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| Affiliation: | Wang Peng,Wang Lizhi,Ren Ruibo,Xu Hongfei (Civil Engineer Laboratory of Shandong Jianzhu University,Jinan 250101) |
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| Abstract: | The paper evaluated high temperature performance of 5 different asphalt binders using DSR and combining with Dynamic Stability of the wheel tracking test for the 5 asphalt mixtures.The research showed that：equivalent viscosity（η＇= sinδ~（-4.8628）G＊/ω） ranked the same as that obtained from the repeat creep test,but vacuum capillary method got higher value when the sample was SBS modified asphalt.The rubber modified asphalt had the highest Shenoy factor,T_（G＊/sinδ）、G~＊/sinδ;but its Dynamic Stability was lower than complex modified one.It needed more attention to this problem. |
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| Keywords: | high temperature performance DSR rubber modified asphalt viscosity |
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