| 聚酯纤维沥青胶浆流变特性研究 |
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| 引用本文： | 叶群山,吴少鹏.聚酯纤维沥青胶浆流变特性研究[J].公路交通科技,2009,26(9). |
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| 作者姓名： | 叶群山 吴少鹏 |
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| 作者单位： | 1. 长沙理工大学,道路结构与材料交通行业苇点实验室,湖南,长沙,410004
2. 武汉理工大学,硅酸盐材料工程教育部重点实验室,湖北,武汉,430070 |
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| 基金项目： | 长沙理工大学道路结构与材料交通行业重点实验室开放基金资助项目 |
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| 摘 要： | 采用粘度试验、动态剪切试验和动态蠕变试验研究了聚酯纤维对沥青胶浆流变特性的影响,并分析了聚酯纤维的作用机理.试验结果表明:聚酯纤维掺入后能增大沥青胶浆的粘度,当纤维掺量超过0.5%时增粘效果明显;聚酯纤维沥青胶浆的复合剪切模量增大并且相位角降低,表明纤维发挥增强作用的同时,还能增加沥青胶浆的弹性性质;高温时聚酯纤维沥青胶浆的车辙因子明显高于基准样,并且在蠕变试验加载过程中产生的总应变和永久应变大幅度降低,表明聚酯纤维能有效改善沥青胶浆与混合料抗永久变形的能力.
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| 关 键 词： | 道路工程 聚酯纤维沥青胶浆 流变特性 粘度 主曲线 永久应变 |
Rheological Characteristics of Polyester Fiber Modified Asphalt Mastic |
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| YE Qunshan,WU Shaopeng.Rheological Characteristics of Polyester Fiber Modified Asphalt Mastic[J].Journal of Highway and Transportation Research and Development,2009,26(9). |
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| Authors: | YE Qunshan WU Shaopeng |
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| Institution: | 1.Key Laboratory of Road Structure and Material of Ministry of Transport;Changsha University of Science and Technology;Changsha Hunan 410004;China;2.Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education;Wuhan University of Technology;Wuhan Hubei 430070;China |
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| Abstract: | Rheological characteristics and reinforcement mechanism of polyester fiber modified asphalt mastic were investigated by viscosity test,dynamic shear test and dynamic creep test.Test results indicate that(1) the viscosity of asphalt mastic can be increased by the addition of polyester fiber,especially when the concentration is up to 0.5 %;(2) complex shear modulus of polyester fiber modified asphalt mastic was increased but the phase angle was reduced,which implies that the asphalt mastic can be reinforced b... |
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| Keywords: | road engineering polyester fiber modified asphalt mastic rheological characteristics viscosity master curve permanent strain |
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