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摘要: 为了有效评价沥青混合料的高温抗变形性能, 应用旋转粘度试验、动态剪切流变试验与重复蠕变试验, 测试了粘度、车辙因子与蠕变模型参数, 利用伯格斯模型对高温蠕变试验数据进行了拟合, 结合沥青混合料高温车辙试验结果, 分析了3种高温流变指标与沥青混合料高温性能的相关性。分析结果表明:车辙因子在评价改性沥青混合料高温性能时并不适用, 模型参数与沥青混合料动稳定度的相关性最大, 达到0.9887, 说明蠕变参数可以准确地反映各种沥青混合料的高温抗变形性能。Abstract: In order to effectively evaluate the high-temperature performance of asphalt mixture, rotary viscosity test, dynamic shear rheometer test and repeated creep test were conducted, viscosity, rut factor and creep model index were tested, the data of high-temperature creep test were fitted by using Burgers model, and the relativities between three rheological indices and the high-temperature performance were analyzed. Analysis result shows that rut factor doesn't fit to evaluate the high-temperature performance of modified asphalt mixture, the relative degree between creep model index and the dynamic stability degree of asphalt mixture is maximum, gets to 0.988 7, so creep model index can reflect the high-temperature performance of all kinds of asphalt mixtures accurately..
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表 1 常规指标测试结果
Table 1. Test result of nomal indices
编号 沥青名称 沥青种类 针入度 (25 ℃) /0.1mm 延度 (15 ℃) /cm 软化点/℃ 1 沥青A SBS改性 67.8 >150 66.8 2 沥青B AH-50 44.7 15 54.2 3 沥青C AH-70 63.9 >150 47.5 4 沥青D AH-90 88.4 >150 44.3 
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表 2 车辙试验结果
Table 2. Test result of wheel ruttings
指标 沥青名称 沥青A 沥青B 沥青C 沥青D 变形/mm 45 min 0.927 2.220 2.861 3.622 60 min 1.023 3.035 3.363 4.368 动稳定度/ (次·mm-1) 6 634 1 425 1 303 851
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表 3 粘度测试结果
Table 3. Test result of viscosities
Pa·s 编号 沥青名称 沥青种类 粘度 60 ℃ 135℃ 1 沥青A SBS改性 >10 000.00 2.36 2 沥青B AH-50 746.00 0.75 3 沥青C AH-70 202.00 0.39 4 沥青D AH-90 151.00 0.33
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表 4 动态剪切流变试验结果
Table 4. Test result of dynamic shear rheometers
沥青名称 沥青A 沥青B 沥青C 沥青D 沥青种类 SBS改性 AH-50 AH-70 AH-90 PG等级 PG70 PG70 PG64 PG64 原样沥青车辙因子/kPa 64 ℃ 3.953 5.689 2.631 1.682 70 ℃ 2.339 2.474 1.272 0.787 76 ℃ 1.514 1.120 0.745 0.386 经RTFOT后车辙因子/kPa 64 ℃ 5.714 4.766 3.402 2.551 70 ℃ 3.559 2.262 1.645 1.113 76 ℃ 1.991 1.034 0.827 0.782
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表 5 参数拟合结果
Table 5. Fitting result of parameters
沥青名称 参数 G0 η0 G1 η1 沥青A 310.13 150.78 16.38 17.61 沥青B 5 067.32 34.76 687.90 120.05 沥青C 963.80 15.74 59.98 66.57 沥青D 384.05 6.99 1.96 22.66
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[1] 王鹏, 曾凡奇, 黄晓明. 沥青高温性能指标的灰色关联度分析[J]. 交通运输工程学报, 2006, 6 (3): 32-36. doi: 10.3321/j.issn:1671-1637.2006.03.008Wang Peng, Zeng Fan-qi, Huang Xiao-ming. Grey relation degree analysis of high-temperature performance indexes of asphalt[J]. Journal of Traffic and Transportation Engineering, 2006, 6 (3): 32-36.(in Chinese) doi: 10.3321/j.issn:1671-1637.2006.03.008 [2] 赵可. 不同评价体系间改性沥青高温性能指标的相关分析[J]. 石油沥青, 2002, 16 (2): 26-31. https://www.cnki.com.cn/Article/CJFDTOTAL-OILE200202007.htmZhao Ke. Correlation of the high temperature stability of modified asphalt and mixture[J]. Petroleum Asphalt, 2002, 16 (2): 26-31.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-OILE200202007.htm [3] 陈佩茹, 李立寒, 刘炤宇. 沥青高温性能指标评价[J]. 石油沥青, 2002, 16 (3): 27-30. https://www.cnki.com.cn/Article/CJFDTOTAL-OILE200203009.htmChen Pei-ru, Li Li-han, Liu Zhao-yu. Evaluation of high temperature performance parameters of modified asphalt[J]. Petroleum Asphalt, 2002, 16 (3): 27-30.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-OILE200203009.htm [4] 徐世法, 周朝晖, 钱培中, 等. Superpave规范对于改性沥青的有效性分析[J]. 公路交通科技, 2003, 20 (1): 41-44. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200301010.htmXu Shi-fa, Zhou Zhao-hui, Qian Pei-zhong, et al. Validation analysis of Superpave binder specification for polymer modified bitumen[J]. Journal of Highway and Transportation Research and Development, 2003, 20 (1): 41-44.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200301010.htm [5] 袁迎捷, 张争奇, 胡长顺. Superpave沥青规范对改性沥青的适用性[J]. 长安大学学报: 自然科学版, 2004, 24 (1): 9-11. doi: 10.3321/j.issn:1671-8879.2004.01.003Yuan Ying-jie, Zhang Zheng-qi, Hu Chang-shun. Applicability of Superpave specification to modified asphalt[J]. Journal of Chang an University: Natural Science Edition, 2004, 24 (1): 9-11.(in Chinese) doi: 10.3321/j.issn:1671-8879.2004.01.003 [6] 贾渝, 王捷. Superpave沥青胶结料性能等级 (PG) 选择[J]. 石油沥青, 2003, 17 (4): 5-7. https://www.cnki.com.cn/Article/CJFDTOTAL-OILE201903005.htmJia Yu, Wang Jie. Selecting performance grade of Superpave asphalt binder[J]. Petroleum Asphalt, 2003, 17 (4): 5-7.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-OILE201903005.htm [7] 李海军, 黄晓明. SHRP沥青性能分级量度的探讨[J]. 公路交通科技, 2006, 23 (2): 36-38. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200602008.htmLi Hai-jun, Huang Xiao-ming. Discussion on SHRP performance grading measurement for asphalt binders[J]. Journal of Highway and Transportation Research and Development, 2006, 23 (2): 36-38.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200602008.htm [8] 邹桂莲, 张肖宁, 李智. 改性沥青应用SHRP PG高温分级存在的几点问题[J]. 中南公路工程, 2004, 14 (1): 41-43. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL200401012.htmZou Gui-lian, Zhang Xiao-ning, Li Zhi. Discussions on high temperature grading of Superpave PG system for asphalt binders[J]. Central South Highway Engineering, 2004, 14 (1): 41-43.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL200401012.htm [9] 原健安, 周吉萍, 李玉珍. SBS与沥青的相互作用性分析[J]. 中国公路学报, 2005, 18 (4): 21-26. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200504004.htmYuan Jian-an, Zhou Ji-ping, Li Yu-zhen. Analysis of interaction between SBS and asphalt[J]. China Journal of Highway and Transport, 2005, 18 (4): 21-26.(in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200504004.htm [10] Bahia H U, Hanson DI, Zeng M, et al. Characterization of modified asphalt binder in Superpave mix design[R]. Washington DC: Transportation Research Board of the National Academies, 2001. -
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