STUDY ON PERMEABILITY AND ELECTRICAL RESISTIVITY OF RED CLAY CONTAMINATED BY CU2+

Authors

  • Rulong Ban College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China
  • Xuejun Chen College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China
  • Yu Song College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China
  • Pengyan Bi College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China
  • Xin Yang College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China
  • Xiaochen Zhang College of Civil and Architectural Engineering, Guilin University of technology, Guilin541004, China, Guangxi Key Laboratory of Mechanics and Geotechnical Engineering, Guilin541004, China

DOI:

https://doi.org/10.14311/CEJ.2021.01.0023

Keywords:

Red clay, Moisture content, Cu2 pollution, Hydraulic conductivity, Resistivity

Abstract

In order to study the permeability characteristics of heavy metal ions contaminated red clay and explore the rapid detection of permeability of heavy metal contaminated red clay. Through variable-head permeability test and electrical resistivity test (different voltages and methods), the effects of Cu2+ concentration and initial water content on hydraulic conductivity characteristic and resistivity of contaminated red clay was systematically investigated. The relationship between permeability characteristic and electrical resistivity was further explored by taking Cu2+ concentration and moisture content as the intermediate variable. The obtained results indicate that the different voltage has no obvious effect on the resistivity of the samples. The four-phase electrode method is more accurate than the two-phase electrode method. With increasing Cu2+ concentrations the hydraulic conductivity of specimens increases, however the permeability coefficient of contaminated soil decreases with increasing initial water content. In the resistivity test, with increasing of Cu2+ concentrations and water content, the resistivity of samples presented a downward trend, which is decreased sharply at first and then tended to be gentle. The relationship between hydraulic conductivity and resistivity of contaminated soil showed a good fitting curve no matter in different Cu2+ concentration or in different water content, but the fitting curves of them presented opposite trend.

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Published

2021-04-09

How to Cite

Ban, R., Chen, X., Song, Y., Bi, P., Yang, X., & Zhang, X. (2021). STUDY ON PERMEABILITY AND ELECTRICAL RESISTIVITY OF RED CLAY CONTAMINATED BY CU2+. Stavební Obzor - Civil Engineering Journal, 30(1). https://doi.org/10.14311/CEJ.2021.01.0023

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