| 废轮胎颗粒与黄土混合物压实性能研究 |
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| 引用本文： | 李朝晖,张虎元.废轮胎颗粒与黄土混合物压实性能研究[J].岩土力学,2010,31(12):3715-3720. |
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| 作者姓名： | 李朝晖 张虎元 |
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| 作者单位： | 1.兰州大学 西部灾害与环境力学教育部重点实验室，兰州 730000；2.甘肃省建筑设计研究院，兰州 730030 |
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| 基金项目： | 甘肃省交通厅资助项目（No. 甘交工（科研）2009第001号）。 |
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| 摘 要： | 选择废轮胎颗粒以0～50%的掺量与黄土混合，研究了混合土的压实特性，并采用专门设计的环刀击实设备，对环刀击实和标准击实进行了对比分析。试验结果表明，掺量小于20%时混合土的压实特性类似黄土，掺量大于40%时的压实特性类似无黏性土；不同掺量的混合土最大干密度与最优含水率存在幂函数关系，击实能对10%～30%掺量的混合物有效最大干密度影响较小；不同击实能下掺量与最优含水率存在函数关系；混合土存在最佳压实掺量，轻、重型击实能下分别为30%和40%左右。根据室内试验结果，给出了不同掺量混合土击实指标建议值供设计参考。
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| 关 键 词： | 废轮胎 废轮胎颗粒 压实性能 黄土 |
| 收稿时间： | 2009-12-01 |
Compaction properties of granulated rubber and loess mixtures |
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| LI Zhao-hui,ZHANG Hu-yuan.Compaction properties of granulated rubber and loess mixtures[J].Rock and Soil Mechanics,2010,31(12):3715-3720. |
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| Authors: | LI Zhao-hui ZHANG Hu-yuan |
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| Institution: | 1. Key Laboratory of Mechanics on Disaster and Environment in Western China, Education Ministry, Lanzhou University, Lanzhou 730000, China; 2. Gansu Architecture Design and Research Institute, Lanzhou 730030, China |
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| Abstract: | To prompt the usage of scrap tires in civil engineering in China, the compaction properties of granulated tires and loess mixtures, with a granulated rubber content of 0%-50% by weight, were studied by standard and modified Proctor compactor and a cutting ring compactor specially designed by the authors for comparison. Test results show that the compaction properties of the mixtures are similar to that of loess soil when the granulated rubber content is less than 20%, but similar to that of a cohesionless soil when the content is more than 40%. A power function relationship was found between the maximum dry density and the optimum water content for mixtures with various compaction efforts. Compaction effort shows less effect on the maximum effective dry density of mixtures with granulated rubber content of 10%-30%. A power funtion relationship is existed between optimum water content and granulated rubber content. Test data show that 30% and 40% of granulated rubber is an optimum addition content for granulated rubber and loess mixtures. Compaction parameters of mixtures have been proposed for design based on laboratory test results. |
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| Keywords: | scrap tires granulated rubber compaction properties loess |
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