| 热老化后的纤维沥青混合料性能试验 |
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| 引用本文： | 杨大田,夏文军.热老化后的纤维沥青混合料性能试验[J].筑路机械与施工机械化,2009,26(3):38-41. |
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| 作者姓名： | 杨大田 夏文军 |
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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重点实验室,重庆,400074
2. 重庆市高速公路发展有限公司渝东分公司,重庆,401147 |
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| 摘 要： | 通过使用强制通风烘箱使纤维沥青混合料试件高温热老化来模拟纤维沥青混合料在施工中受到的热老化，进一步通过间接拉伸试验、冻融循环试验和疲劳试验测试热老化后试件的间接拉伸强度、冻融间接拉伸强度比、动态劲度模量和疲劳寿命。试验结果表明：热老化后，纤维沥青混合料间接拉伸强度稍增大，水稳定性变差，动态劲度模量增大，疲劳寿命降低。
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| 关 键 词： | 热老化 纤维沥青混合料 水稳定性 疲劳寿命 |
Test on Performance of Fiber Asphalt Mixture After Thermal Aging |
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| WANG Da-tian,XIA Wen-jun.Test on Performance of Fiber Asphalt Mixture After Thermal Aging[J].Road Machinery & Construction Mechanization,2009,26(3):38-41. |
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| Authors: | WANG Da-tian XIA Wen-jun |
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| Institution: | YANG Da-tian, XIA Wen-jun(1 .Key Laboratory for Mountain Road Construction and Maintenance Technology, Chongqing Jiaotong University Chongqing 400074, China ;2.Yudong Branch of Chongqing Expressway Development Co. Ltd., Chongqing 401147, China) |
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| Abstract: | The fiber asphalt mixture specimen is forced to be thermally aged with ventilated oven in order to simulate the thermal aging of fiber asphalt mixture during construction. The indirect tensile strength, freeze-thaw indirect tensile strength ratio, dynamic stiffness modulus and fatigue life of specimen after thermal aging are tested with a set of tests. The result indicates that the indirect tensile strength slightly grows, the water stability is worse, the dynamic stiffness modulus is bigger and the fatigue life is reduced |
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| Keywords: | thermal aging fiber asphalt mixture water stability fatigue life |
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