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Volume 37 Issue zk1
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CHEN Fu, LI Hai-tao. Construction technology of cement deep mixing piles in Huanghua Port region[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 156-160. DOI: 10.11779/CJGE2015S1030
Citation: CHEN Fu, LI Hai-tao. Construction technology of cement deep mixing piles in Huanghua Port region[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 156-160. DOI: 10.11779/CJGE2015S1030
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Construction technology of cement deep mixing piles in Huanghua Port region

  • 1. CCCC- Tianjin Port Engineering Institute Co., Ltd., Tianjin 300222, China; 2. Key Laboratory of Port Geotechnical Engineering, Ministry of Communication, Tianjin 300222, China; 3. Key Laboratory of Geotechnical Engineering of Tianjin, Tianjin 300222, China; 4. Cangzhou Huanghuagang Ore Port Co., Ltd., Cangzhou 061113, China

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  • Received Date: March 25, 2015
  • Published Date: July 24, 2015
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  • The cement deep mixing (CDM) pile is a widely-used method for soft ground treatment in Huanghua Port region. However, construction quality problems easily occur. Based on the field inspection results of CDM in Huanghua Port region, two construction quality problems of CDM are systematically analyzed. In order to investigate the causes of construction quality problems, indoor mix proportion tests on three contents of cement under different test periods are conducted to exclude such factors as content of cement and soil texture. Through the comparison of difference between indoor mix proportion tests and field construction of CDM, the field construction technology is pointed out to be the main cause of quality problems. Finally, two effective construction technique improvements of cement deep mixing pile are proposed. The successful application of bidirectional mixing technique in the Huanghua Port region is introduced, and the relevant inspection data is provided for reference. In addition, a fan-shaped back-spraying stirring head is demonstrated to be an effective construction technique to solve the two above construction quality problems.
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    • References (3)
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    JGJ79—2012 建筑地基处理技术规范[S]. 2012. (JGJ79—2012 Technical code for ground treatment of buildings[S]. 2012. (in Chinese))
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    刘松玉, 易耀林, 朱志铎. 双向搅拌桩加固高速公路软土地基现场对比试验研究[J]. 岩石力学与工程学报, 2008, 27(11): 2272-2280. (LIU Song-yu, YI Yao-lin, ZHU Zhi-duo. Comparison tests on field bidirectional mixing column for soft ground improvement in expressway[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(11): 2272-2280. (in Chinese))
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    陈 富, 张 健, 刘爱民. 一种翻土叶片后中间位置扇形喷浆的水泥搅拌桩钻头[P]. 中国: ZL201420100404.3, 2014-07-09. (CHEN Fu, ZHANG Jian, LIU Ai-min. Deep stirring pile stirring head with fan-shaped back-spraying at the middle of blade[P]. China: ZL201420100404.3, 2014-07-09. (in Chinese))
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