›› 2016, Vol. 37 ›› Issue (S1): 255-262.doi: 10.16285/j.rsm.2016.S1.033

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on quality control method with two indices for embankment filled with high liquid limit soil

HONG Bao-ning1, 2, 3, HUA Jun-hui1, 3, LIU Xin1, 2, 4, YI Jin-xiang1, 3   

  1. 1. Key Laboratory of Geomechanics and Embankment Engineering of Ministry of Education, Hohai University, Nanjing, Jiangsu 210098, China; 2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China; 3. Geotechnical Research Institute, Hohai University, Nanjing, Jiangsu 210098, China; 4. Institute of Tunnel and Underground Engineering, Hohai University, Nanjing, Jiangsu 210098, China
  • Received:2015-11-16 Online:2016-06-16 Published:2018-06-09
  • Supported by:
    This work was supported by the Fundamental Research Funds for the Central Universities (2014B34414), the Natural Science Youth Foundation of Jiangsu Province (BK20140848) and Scientific Program of Transport Department of Guangdong Province (S-2015-02-013, S-2015-02-015).

Abstract: Great amount of engineering practices indicate that the single index Dc, degree of compaction could not well control the quality of embankment filled with high liquid limit soil (including the improved high liquid limit soil), and may cause quality hidden dangers. Through experimental study, this paper proposes a quality control method using two indices to control the quality of embankment filled with high liquid limit soil; and the two indices are the volume ratio of air Va and the degree of compaction Dc. When Dc is more than 93%, the suggested value for high liquid limit soil (or silt) is 4%≤Va≤8%, and the suggested value for high liquid limit sand soil (or silt) is 6%≤Va≤13%. The feasibility and validity of this two indices quality control method was verified through tests in laboratory and test sections. The results show that adopting the two indices (Va and Dc ) could not only guarantee the intensity and stiffness, but also ensure better water stability, so as to provide technical supports for further full use the high liquid limit soil as embankment filler.

Key words: high liquid limit soil, embankment filling, two indices control theory, volume ratio of air, water stability

CLC Number: 

  • U 416.1
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