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
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.
曹沂海，陈宏. 改良后的高液限粘土在高速公路施工中的应用[J]. 铁道工程学报, 2006, 23(8): 34-37.
CAO Yi-hai, CHEN Hong. Application of Ameliorated High Liquid Clay in Construction of Expressway. 铁道工程学报, 2006, 23(8): 34-37.
2006, Vol. 23 
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