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| Application of Ameliorated High Liquid Clay in Construction of Expressway |
| CAO Yi-hai1, CHEN Hong2 |
| 1.Beijing Tiechen Engineering Construction Supervision Company, Beijing 100032, China; 2.Henan Pingzheng Expressway Development Co. Ltd. of China Railway Engineering Corporation, Xiangcheng, Henan 466004, China |
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Abstract Research purposes: Based on the practical application of ameliorated high liquid limit clay with lime as filling materials of subgrade，the exploration is made on improving the engineering performance of ameliorated high liquid limit clay with lime and adopting EDTA titration method to measure lime dosage in compressed rendzina soil the construction technique is summarized and the key points of construction is proposed.
Research methods: The theoretical analysis is made for ameliorated high liquid limit clay with lime, and EDTA titration method for measuring lime dosage and construction technique for mixing high liquid limit clay with lime are adopted.
Research results: For ameliorated high liquid clay with lime as filling materials of subgrade, the construction quality and process can be guaranteed and the construction cost can be reduced, if the rational construction technique, qualified lime and correct measuring method are adopted.
Research Conclusions: In course of application of ameliorated high liquid limit clay with lime as filling materials of subgrade, the performance of soil for filling subgrade can be improved, the strength and stability of subgrade bed can be enhanced and construction quality of subgrade can be guaranteed only if the construction technique should be adjusted according to different conditions, lime quality is controlled well and EDTA titration method is adopted to measure lime dosage of compressed sample soil on time.
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Received: 15 September 2006
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| [2] |
JTJ 051-1993,公路土工试验规程[S].
|
| [4] |
林宗元.试论岩土工程[C]//工程地质及岩土工程新技术新方法论文集.武汉:中国地质大学出版社,1994.
|
| [5] |
李生林.中国膨胀土工程地质研究[M].南京:江苏科学技术出版社,1992.
|
| [7] |
向文俊,牛宏斌,施接锋,等.宁淮高速公路改良膨胀土压实特性研究[J].河海大学学报(自然科学版),2004,32(4):434-436.
|
| [1] |
JTJ 033-1995,公路路基施工技术规范[S].
|
| [3] |
JTJ 057-1994,公路工程无机结合料稳定材料试验规程[S].
|
| [6] |
石名磊,于华.石灰改良膨胀土的基本特性[C]//郑健龙,杨和平.膨胀土处治理论、技术与实践.北京:人民交通出版社,2004.
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2006, Vol. 23 
