| 膨胀土水泥改性均匀性及长期效果试验研究 |
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| 引用本文： | 刘军,黄斌,龚壁卫,胡波.膨胀土水泥改性均匀性及长期效果试验研究[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 刘军 黄斌 龚壁卫 胡波 |
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| 作者单位： | 长江科学院水利部岩土力学与工程重点实验室,湖北武汉,430010 |
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| 基金项目： | 国家“十一五”科技支撑课题(2006BAB04A10) |
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| 摘 要： | 为了解南水北调中线工程南阳膨胀土试验段水泥改性土的掺拌均匀性及长期改性效果,进行了现场取样和室内试验研究。结果表明,中膨胀水泥改性土采用稳定土拌和机拌合效果相对较好;弱膨胀水泥改性土采用路拌机拌合,试样渗透系数及无侧限抗压强度变化均较大,表明现场拌合不均匀,即水泥改性土的拌合工艺对其均匀性影响很大。水泥改性土现场运行一年多之后,不仅显著降低了膨胀性,而且显著提高了膨胀土的抗剪强度,长期改性效果显著。
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| 关 键 词： | 土南水北调中线工程 膨胀土 水泥改性 均匀性 长期改性效果 |
Experimental Study on Uniformity and Long-term Effects of Cement Modified Expansive Soil |
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| LIU Jun,HUANG Bin,GONG Bi-wei,HU Bo.Experimental Study on Uniformity and Long-term Effects of Cement Modified Expansive Soil[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | LIU Jun HUANG Bin GONG Bi-wei HU Bo |
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| Institution: | LIU Jun,HUANG Bin,GONG Bi-wei,HU Bo(Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China) |
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| Abstract: | In order to understand uniformity and long-term effects of the cement modified expansive soil in Nanyang segment of Middle Route Project of Water Diversion from south China,site sampling and laboratory experiments are performed.The results show that the mixing effect of cement modified middle expansive soil mixing by stabilized soil mixing machine is relatively good.The mixing effect of cement modification for weak expansive soil mixing by Road mixing machine is not good.It is Poor because the variation ran... |
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| Keywords: | Middle route project of water diversion from south to north China Expansive soil Cement modification Uniformity Long-term effects |
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