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Compressibility of cement-stabilized zinc-contaminated high plasticity clay

Author

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  • Yan-Jun Du
  • Ming-Li Wei
  • Krishna Reddy
  • Fei Jin

Abstract

The presence of heavy metals at high concentrations (percent levels) in soils has been a growing concern to human health and the environment, and the cement stabilization is considered to be an effective and practical approach to remediate such soils. The compressibility of such stabilized soils is an important consideration for redevelopment of the remediated sites for building and/or roadway construction. This paper investigates the effects of high levels of zinc concentration on the compressibility of natural clay stabilized by cement additive. Several series of laboratory compression (oedometer) tests were conducted on the soil specimens prepared with the zinc concentrations of 0, 0.1, 0.2, 0.5, 1, and 2 %, cement contents of 12 and 15 %, and curing time of 28 days. The results show that the yield stress and compression index at the post-yield state decrease with an increase in the zinc concentration regardless of the cement content. The observed results are attributed to the decrease in the cement hydration of the soil. Overall, this study demonstrates that the cementation structure of the soils is weakened, and the compressibility increases with the elevated zinc concentration, particularly at relatively high levels of zinc concentration. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Yan-Jun Du & Ming-Li Wei & Krishna Reddy & Fei Jin, 2014. "Compressibility of cement-stabilized zinc-contaminated high plasticity clay," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 73(2), pages 671-683, September.
    • Handle: RePEc:spr:nathaz:v:73:y:2014:i:2:p:671-683
    DOI: 10.1007/s11069-014-1098-3
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    Cited by:

    1. Xingzhong Nong & Yuehua Liang & Shan Lin & Yi Lu & Zhi Shang, 2022. "Investigation of Impact on Hydro-Mechanical Properties for Cement Stabilized Heavy Metal Contaminated Soil under Different Salinity," Sustainability, MDPI, vol. 14(21), pages 1-14, October.
    2. Norshakila Abdul Wahab & Mohammad Jawed Roshan & Ahmad Safuan A. Rashid & Muhammad Azril Hezmi & Siti Norafida Jusoh & Nik Daud Nik Norsyahariati & Sakina Tamassoki, 2021. "Strength and Durability of Cement-Treated Lateritic Soil," Sustainability, MDPI, vol. 13(11), pages 1-23, June.
    3. Zhongping Yang & Jiazhuo Chang & Yao Wang & Xuyong Li & Shu Li, 2021. "Effects of Long-Term Freeze–Thaw Cycles on the Properties of Stabilized/Solidified Lead-Zinc-Cadmium Composite-Contaminated Soil," IJERPH, MDPI, vol. 18(11), pages 1-18, June.

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