| SEAM沥青混合料高温稳定性 |
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| 引用本文： | 杨大田,夏文军,杨锡武.SEAM沥青混合料高温稳定性[J].长沙理工大学学报(自然科学版),2008,5(4):18-22. |
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| 作者姓名： | 杨大田 夏文军 杨锡武 |
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| 作者单位： | 1. 重庆交通大学山区道路建设与维护技术实验室,重庆,400074
2. 重庆高速公路发展有限公司渝东分公司,重庆,401147 |
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| 基金项目： | 云南省交通厅科技资助项目
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| 摘 要： | 通过标准马歇尔试验确定普通沥青混合料的最佳油石比和毛体积密度，依据经验公式计算不同掺量SEAM（硫磺添加剂）沥青混合料的最佳油石比，再通过车辙和单轴动态蠕变试验测试了不同掺量SEAM沥青混合料的高温变形，分析、计算了动稳定度、位移和蠕变模量等试验数据．试验结果表明，掺量为30％～40％SEAM沥青混合料的抗高温变形能力最强，因而SEAM改性沥青混合料的掺量应在30％以上较为合适．
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| 关 键 词： | 硫磺稀释沥青添加剂 沥青混合料 车辙 单轴动态蠕变 |
High-temperature stability of modified asphalt mixture by SEAM |
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| YANG Da-tian,XIA Wen-jun,YANG Xi-wu.High-temperature stability of modified asphalt mixture by SEAM[J].Journal of Changsha University of Science and Technology:Natural Science,2008,5(4):18-22. |
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| Authors: | YANG Da-tian XIA Wen-jun YANG Xi-wu |
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| Institution: | YANG Da-tian1,XIA Wen-jun2,YANG Xi-wu1 |
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| Abstract: | The optimal asphalt-aggregate ratio and bulk volume density for asphalt mixtures are confirmed by standard Marshall stability test, and the optimal asphalt-aggregate ratio and bulk volume density for the different dose SEAM are calculated by experiential formula. Through rutting test and dynamic uniaxial creep test, their high-temperature deformations are measured, and dynamic stability,displacement and dynamic creep module etc. , are analyzed and computed. These experiment results show that 30% - 40% doses asphalt mixtures are the strongest at high-temperature stability, hence the dose above 30% is more appropriate in SEAM asphalt mixture. |
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| Keywords: | sulphur extended asphalt modifier asphalt mixture rutting test dynamic uniaxial creep test |
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