| 严寒地区水泥乳化沥青砂浆的低温性能及疲劳性能试验研究 |
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| 引用本文： | 胡华锋,邵丕彦,李海燕.严寒地区水泥乳化沥青砂浆的低温性能及疲劳性能试验研究[J].中国铁道科学,2011,32(4). |
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| 作者姓名： | 胡华锋 邵丕彦 李海燕 |
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| 作者单位： | 1. 铁道部科学技术司,北京100844;北京交通大学土木建筑学院,北京100081
2. 中国铁道科学研究院金属及化学研究所,北京,100081 |
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| 基金项目： | 铁道部科技研究开发计划项目(2009G023-C) |
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| 摘 要： | 运用试验方法,进行严寒地区用水泥乳化沥青砂浆抗冻性、低温力学性能和低温抗裂性的低温性能及疲劳性能研究。结果表明,该种砂浆的抗冻性可达600次以上;随着温度的降低,砂浆的抗压强度、抗折强度逐渐增加,-40℃下砂浆的折压比在0.2以上;砂浆出现裂纹时钢球的压入深度均大于1.2 mm;模拟行车条件下砂浆的受力情况,进行10~40 Hz频率350万次疲劳试验,砂浆的累积变形量均小于0.07 mm。结合试验结果和严寒地区试验段的运营考察,考虑到严寒地区-40℃的极端温度条件和350 km.h-1的运营速度,提出严寒地区水泥乳化沥青砂浆的低温性能指标为-40℃砂浆出现裂纹时钢球的压入深度不小于1.0 mm,低温折压比不小于0.20;疲劳性能指标为12 Hz加载频率下经100万次疲劳试验的砂浆累积变形量不大于0.10 mm。
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| 关 键 词： | 板式无砟轨道 水泥乳化沥青砂浆 严寒地区 低温性能 疲劳性能 试验研究 |
Experimental Study on the Low Temperature Property and Fatigue Property of Cement-Emulsified Asphalt Mortar Used in Severe Cold Region |
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| HU Huafeng,SHAO Piyan,LI Haiyan.Experimental Study on the Low Temperature Property and Fatigue Property of Cement-Emulsified Asphalt Mortar Used in Severe Cold Region[J].China Railway Science,2011,32(4). |
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| Authors: | HU Huafeng SHAO Piyan LI Haiyan |
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| Institution: | HU Huafeng1,2,SHAO Piyan3,LI Haiyan3(1.Science and Technology Department,Ministry of Railways,Beijing 100844,China,2.School of Civil Engineering,Beijing Jiaotong University,Beijing 100081,3.Metals and Chemistry Research Institute,China Academy of Railway Sciences,China) |
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| Abstract: | Proper experimental methods were used to study the low temperature properties,such as the freezing resistance,mechanical properties,crack resistance,and the fatigue properties of cement-emulsified asphalt mortar used in severe cold region.The results show that the freezing resistance of this kind of mortar can reach at least 600 times.Its compressive strength and the bending strength rise gradually along with the decrease of the test temperature.The ratio of bending strength and compressive strength below-4... |
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| Keywords: | Slab ballastless track Cement-emulsified asphalt mortar Severe cold area Low temperature property Fatigue property Experimental study |
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