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Experimental Research and Application of Geopolymer in Soft Soil Foundation Treatment

  • Jialiang Yao
  • Haojie QiuEmail author
  • Hua He
  • Xin Chen
  • Guiyu Hao
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

In order to understand the characteristics of geopolymer used as the curing agent to reinforce soft soil foundation by the mixing pile method, the unconfined compressive strength test and direct shear test were carried out in laboratory. The orthogonal test with three indexes of geopolymer content, soft soil moisture content and stirring time was carried out. The optimum mix proportion of geopolymer used for soft soil foundation treatment was analyzed by the range analysis. The mechanical properties of geopolymer stabilized soil were studied experimentally. From the test results, it is shown that the primary and secondary factors affecting reinforcing soft soil are geopolymer content and moisture content of soft soil. The optimum geopolymer content is 14%. The unconfined compressive strength and shear strength of the geopolymer stabilized soil at 90 days can reach 3.75–4.73 MPa and 0.753–1.523 MPa, respectively. The relationship between the compressive strength (UCS) and shear strength is \( \tau = 0.26f_{cu} \). The performance of the soft soil stabilized with the geopolymer is better than that of the cement stabilized soil.

Keywords

Geopolymer Soft soil Orthogonal test Microstructure Application 

Notes

Acknowledgement

This work is supported by the National Natural Science Foundation of China under Grant No. 51608056 and 51578080, and the Transportation Department of Hunan Province, No. 2013-01.

Conflicts of Interest

The authors declare no conflict of interest.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Jialiang Yao
    • 1
  • Haojie Qiu
    • 1
    Email author
  • Hua He
    • 1
  • Xin Chen
    • 1
  • Guiyu Hao
    • 1
  1. 1.School of Traffic and Transportation EngineeringChangsha University of Science and TechnologyChangshaChina

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