| 半刚性基层材料振动试验方法 |
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| 引用本文： | 李明杰,蒋应军,张俊杰,王顺,戴经梁.半刚性基层材料振动试验方法[J].交通运输工程学报,2010(1). |
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| 作者姓名： | 李明杰 蒋应军 张俊杰 王顺 戴经梁 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室;河南省交通运输厅公路管理局;廊沧高速公路廊坊建设管理处; |
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| 基金项目： | 交通部行业联合科技攻关项目(2008353313010,2008353333200);;新世纪优秀人才支持计划项目(NCET-08-0749) |
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| 摘 要： | 以最大程度地模拟现场碾压工况和效果为原则,测试了室内外振动压实后的水泥稳定碎石干密度和级配,研究了振动仪的振动参数对半刚性基层材料压实的影响,提出半刚性基层材料振动试验方法。发现工作频率为30 Hz,激振力为7.6 kN,名义振幅为1.2 mm和工作质量为300 kg时振动效果最佳,振动100 s时的最大干密度与现场干密度相等;运用振动试验方法确定的最大干密度的准确度平均为100.0%,振动法成型试件7 d无侧限抗压强度准确度平均为112.6%,而重型击实试验方法的准确度平均为96.9%,静压法成型试件7 d无侧限抗压强度准确度平均为42.9%。分析结果表明:振动试验方法能够更好地模拟基层实际碾压效果,成型的试件能真实地反映基层材料实际性能。
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| 关 键 词： | 路面工程 半刚性基层材料 振动试验方法 振动参数 最大干密度 无侧限抗压强度 |
Vibration test method of semi-rigid base course material |
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| LI Ming-jie,JIANG Ying-jun,ZHANG Jun-jie,WANG Shun,DAI Jing-liang.Vibration test method of semi-rigid base course material[J].Journal of Traffic and Transportation Engineering,2010(1). |
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| Authors: | LI Ming-jie JIANG Ying-jun ZHANG Jun-jie WANG Shun DAI Jing-liang |
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| Institution: | 1.Key Laboratory for Special Area Highway Engineering of Ministry of Education/a>;Chang'an University/a>;Xi'an 710064/a>;Shaanxi/a>;China/a>;2.Highway Administration Bureau/a>;Department of Transportation of Henan Province/a>;Zhengzhou 450052/a>;Henan/a>;3.Langfang Management Department of Langcang Expressway/a>;Langfang 065000/a>;Hebei/a>;China |
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| Abstract: | Based on simulating the on-the-spot rolling working condition and impact of semi-rigid base course to maximal extent,the dry density and gradation of semi-rigid base course material were tested,the influence of vibration parameters on the compacting effect of semi-rigid base course material was studied,and a vibration test method of semi-rigid base course material was put forward.It is pointed that the optimum vibration parameters of vibration compaction test machine are vibration frequency at 30 Hz,excitat... |
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| Keywords: | pavement engineering semi-rigid base course material vibration test method vibration parameter maximum dry density unconfined compressive strength |
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