Experimental Study on Strength Characteristics of Zinc Contaminated Soil Solidified by Cement-Metakaolin-Limestone

Authors

  • Shenjing Fu
  • Xinpo Sun

DOI:

https://doi.org/10.54097/ajst.v3i3.2521

Keywords:

Solidification/stabilization, Zinc-contamination, Soils, LC3, Strength characteristic.

Abstract

In order to reveal the effect of curing agent ratio variable and curing age on zinc heavy metal contaminated soil solidified by cement-metakaolin-limestone (LC3) ternary mixture, artificial contaminated soil and curing agent were used to simulate the solidification of contaminated soil. Through a series of laboratory tests, the change rules of unconfined compressive strength and electrical conductivity after curing were analyzed. It is found that with the increase of curing age, the stronger the compressive strength is, the lower the moisture content is. The compressive strength of solidified soil decreases with the increase of moisture content, showing an obvious correlation. Thus it can be seen that the coupling substitution of high territory and limestone for cement can obtain lower moisture content and higher strength and excellent mechanical properties at a relatively early age. The pH value of solidified soil increased to 9.68-10.78. Considering many factors, the solidification effect of zinc heavy metal is the best when the ratio of cement, metakaolin and limestone is LC3-3.

References

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Published

13 November 2022

How to Cite

Fu, S., & Sun, X. (2022). Experimental Study on Strength Characteristics of Zinc Contaminated Soil Solidified by Cement-Metakaolin-Limestone. Academic Journal of Science and Technology, 3(3), 5–8. https://doi.org/10.54097/ajst.v3i3.2521

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