| SBS聚合物改性沥青热储存稳定性取样方法和评价指标 |
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| 引用本文： | 冯新军,郝培文. SBS聚合物改性沥青热储存稳定性取样方法和评价指标[J]. 长沙理工大学学报(自然科学版), 2006, 3(2): 1-6 |
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| 作者姓名： | 冯新军 郝培文 |
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| 作者单位： | 1. 长沙理工大学,公路工程学院,湖南,长沙,410076;长安大学,公路学院,陕西,西安,710064
2. 长安大学,公路学院,陕西,西安,710064 |
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| 摘 要： | 针对现行规范中离析试验评价聚合物改性沥青热储存稳定性的缺点,结合工程实际,设计开发了筒法离析试验.通过对不同种类、不同剂量的SBS聚合物改性沥青进行不同时刻的筒法离析试验,并对离析后上、下部沥青进行了软化点试验、动态剪切流变(DSR)试验和凝胶渗透色谱(GPC)试验,首次提出了采用离析率Rz 1作为SBS聚合物改性沥青热储存稳定性的评价指标.结果表明,筒法离析试验是一种更合理、更有效的评价方法.
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| 关 键 词： | 热储存稳定性 筒法离析试验 凝胶渗透色谱 离析率Rz |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-11-28 |
Sampling method and evaluation factor for investigating the hot storage stability of SBS polymer modified asphalt |
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| FENG Xin-jun,HAO Pei-wen. Sampling method and evaluation factor for investigating the hot storage stability of SBS polymer modified asphalt[J]. Journal of Changsha University of Science and Technology(Natural Science), 2006, 3(2): 1-6 |
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| Authors: | FENG Xin-jun HAO Pei-wen |
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| Abstract: | Based on the disadvantages of the current method for investigating the hot storage stability of SBS polymer modified asphalt in the current specifications,and combined with technical experiences,a new method called separation test in canister for evaluating the hot storage stability of SBS polymer modified asphalt is developed.Using methods of a softening point test,Dynamic Shear Rheometer(DSR) and Gel Permeation Chromatography(GPC) to investigate the upper and the bottom asphalt sample from the canister,a ratio of separation,R_(z 1),is first put forward to evaluate the hot storage stability of SBS polymer modified asphalt.The results show that the new method called separation test in canister is a more suitable and effective method for evaluating the hot storage stability of SBS modified asphalt. |
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| Keywords: | hot storage stability separation test in canister Gel Permeation Chromatography ratio of separation(R_(z 1)) |
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