| 沥青混合料老化模拟试验方法与验证研究 |
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| 引用本文： | 虞将苗,邹桂莲,胡学斌,张肖宁.沥青混合料老化模拟试验方法与验证研究[J].公路交通科技,2005,22(10):14-17. |
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| 作者姓名： | 虞将苗 邹桂莲 胡学斌 张肖宁 |
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| 作者单位： | 华南理工大学道路工程研究所,广东,广州,510640 |
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| 基金项目： | 交通部公路司公路工程标准修订资助项目（200107） |
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| 摘 要： | 应用沥青针入度、布氏粘度和DSR频率扫描等试验方法,评价了SHRP沥青混合料短期老化(STOA)和长期老化模拟方法(LTOA)的老化程度,并与经过SHRP沥青胶结料的标准短期老化(RTFO)和长期老化(PAV)方法后的沥青胶结料性能进行了对比研究。发现LTOA老化与PAV老化两者的老化程度基本相近,而STOA老化程度则要比RTFO老化严重一些。结果表明在沥青混合料性能试验评价过程中充分考虑老化因素的影响是必要的。
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| 关 键 词： | 沥青混合料 老化模拟 老化程度评价 频率扫描 |
| 文章编号： | 1002-0268(2005)10-0014-04 |
| 收稿时间： | 2004-10-29 |
| 修稿时间： | 2004年10月29 |
Asphalt-Aggregate Mixtures Aging Simulation Test Study Method |
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| YU Jiang-miao,ZOU Gui-lian,HU Xue-bin,ZHANG Xiao-ning.Asphalt-Aggregate Mixtures Aging Simulation Test Study Method[J].Journal of Highway and Transportation Research and Development,2005,22(10):14-17. |
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| Authors: | YU Jiang-miao ZOU Gui-lian HU Xue-bin ZHANG Xiao-ning |
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| Institution: | Road Engineering Research Institute, South China Univ. of Tech., Guangdong Guangzhou 510640, China |
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| Abstract: | This paper studied the aging effect of Short Term Oven Aging method and Long Term Oven Aging method on asphalt mixes.Penetration,Brookfield Viscosity and DSR Frequency Sweeping tests were used to evaluate the aging of the different aged asphalt reclaimed from the STOA and LTOA mixes.Compared with the results from original asphalt,RTFO asphalt and PAV asphalt,it is pointed that the aging of the asphalt reclaimed from the LTOA mixes and the asphalt after PAV aging are normally close,however,the aging of the asphalt reclaimed from the STOA mixes is a little more serious than the asphalt after RTFO aging.The results indicate that the consideration of aging during the asphalt mixture performance evaluations is necessary. |
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| Keywords: | Asphalt mixes Aging simulation Aging level evaluation Frequency sweeping |
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