›› 2016, Vol. 37 ›› Issue (12): 3642-3650.doi: 10.16285/j.rsm.2016.12.037

• Testing Technology • Previous Articles    

A method for determining optimum casting thickness of foamed mixture lightweight soil embankment

ZHU Jun-jie1, 2, LIU Xin1, 3, HONG Bao-ning1, 2, LIU Shun-qing4, XU Fen-qiang1, 5, HUA Jun-hui1, 2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China; 3. Institute of Tunnel, Underground and Metro Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 4. School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China; 5. School of Architecture Engineering, Nanjing Institute of Technology, Nanjing, Jiangsu 211167, China
  • Received:2014-11-27 Online:2016-12-10 Published:2018-06-09
  • Supported by:

    This work was supported by the Young Scholars of National Natural Science Foundation of Jiangsu Province (BK20140848), the Fundamental Research Funds for the Central Universities (2014B04914), the General Program of China Postdoctoral Science Foundation (2014M550882) and the Science and Technology Foundation for Department of Guangdong Provincial Transportation and Communication (2012-02-013).

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Abstract: Foamed mixture lightweight soil (FMLS) is a new environmental protection geotechnical material. It has been applied to embankment filling. However, the issue of optimum casting thickness of each layer FMLS has not been solved yet until now. In this study, a self-developed instrument is used to measure the strength of the FMLS at different depths during construction. The testing principles and steps are given; and the judgment criterion of the optimum casting thickness is determined. Through an engineering case, a method is proposed for determining the optimum casting thickness for FMLS as embankment filling material. It is suggested that the optimum casting thickness should be controlled within 500 mm for test section. This procedure is beneficial to control construction quality of FMLS as embankment filling material.

Key words: foamed mixture lightweight soil, strength tester, casting thickness, judgment criterion

CLC Number: 

  • TU 449

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