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| SBS改性沥青修正等黏原则 | |
| 引用本文： | 陈华鑫,姜毅,李硕.SBS改性沥青修正等黏原则[J].新型建筑材料,2010,37(2). |
| 作者姓名： | 陈华鑫 姜毅 李硕 |
| 作者单位： | 1. 长安大学材料科学与工程学院,陕西,西安,710061 2. 普度大学,美国,西拉法叶,47906 3. 印第安那交通厅公路研究所,美国,西拉法叶,47906 |
| 基金项目： | 西部交通建设科技项目 |
| 摘 要： | 普通沥青混合料按照ASTM D 2493的等黏原则可以确定混合料的施工温度,但不适宜用于改性沥青混合料。通过4种SBS改性沥青混合料在不同压实温度下的旋转压实试验,建立了毛体积相对密度与压实温度的关系,由此得到混合料最佳压实温度,根据该最佳压实温度下的黏度与剪切速率关系,得到黏度0.28 Pa.s对应的剪切速率大约为60 s-1。由此建议新的沥青等黏原则的测黏剪切速率为60 s-1,而不是ASTM D 2493规定的6.8 s-1,结果表明,新方法确定的改性沥青混合料施工温度可降低5～10℃。 |
| 关 键 词： | SBS改性沥青混合料 施工温度 修正等黏原则 黏度 剪切速率 |
Modified equiviscous principle for SBS modified asphalt binders |
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| CHEN Huaxin,JIANG Yi,LI Shuo.Modified equiviscous principle for SBS modified asphalt binders[J].New Building Materials,2010,37(2). | |
| Authors: | CHEN Huaxin JIANG Yi LI Shuo |
| Affiliation: | CHEN Huaxin1,JIANG Yi2,LI Shuo3(1.School of Materials Science , Engineering,Chang\'an University,Xi\'an 710061,Shanxi,China,2.Purdue University,West Lafayette 47906,USA,3.Indiana Department of Transportation,Division of Research,USA) |
| Abstract: | The equiviscous principle in ASTM D 2493 can be used to determine the construction temperature of ordinary asphalt binders,but it is not suitable to some polymer-modified asphalt binders.Through the rotation compaction tests of 4 types of SBS modified asphalt binders under different compaction temperatures,the relationship between specific bulk gravity and compaction temperature was established.Then the optimal compaction temperature was obtained.According to the relationship between viscosity and shear rat... |
| Keywords: | SBS modified asphalt binders construction temperature modified equiviscous principle viscosity shear rate |
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