Fundamental properties of strength and deformation of cement solidified/stabilized zinc contaminated soils

WEI Ming-li; DU Yan-jun; ZHANG Fan

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Fundamental properties of strength and deformation of cement solidified/stabilized zinc contaminated soils

更新时间：2026-06-25

- Fundamental properties of strength and deformation of cement solidified/stabilized zinc contaminated soils
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  东南大学岩土工程研究所,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU432
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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WEI Ming-li, DU Yan-jun, ZHANG Fan. Fundamental properties of strength and deformation of cement solidified/stabilized zinc contaminated soils[J]. 2011, 32(S2).
DOI：

WEI Ming-li, DU Yan-jun, ZHANG Fan. Fundamental properties of strength and deformation of cement solidified/stabilized zinc contaminated soils[J]. 2011, 32(S2). DOI：

摘要

在不同水泥掺量不同和龄期条件下对不同Zn2+浓度的水泥固化/稳定重金属污染土(CHMS)进行了无侧限抗压强度试验。分析了CHMS的应力-应变关系和强度发展随Zn2+浓度的变化特性；采用参数（qu/qu

Zn0）对CHMS的无侧限抗压强度随龄期发展规律进行了评价；讨论了Zn2+浓度对破坏应变和变形模量的影响。结果表明，锌离子浓度对CHMS的无侧限抗压强度、破坏应变和变形模量的影响均存在“临界浓度”（0.05%）。低于“临界浓度”时，锌离子对CHMS的强度和变形发展影响不明显；高于“临界浓度”时，CHMS的强度和变形发展规律受锌离子浓度影响显著

Abstract

To investigate characteristics of strength and deformation of cement solidified/stabilized heavy metal contaminated soils(CHMS)

a series of unconfined compression tests were performed. Samples of CHMS were prepared artificially by adding zinc nitrate as a source of pollutant at zinc concentrations of 0.01

0.02

0.05

0.1

and 0.2 mg/kg (dry soil weight basis)

and three cement contents of 12%

15%

and 18% (dry soil weight basis). The effect of zinc concentration on stress-strain curves is discussed. A proposed parameter (qu/qu

Zn0) is adopted to investigate the effect of zinc concentration on strength properties of samples. The influence of zinc concentration on the strain at failure and deformation modulus is evaluated. It is found that there exits a critical zinc concentration in terms of its influence on strength

strain at failure

and deformation modulus. The influence is marginal in the case that zinc concentration is lower than the critical value

whereas the influence is considerable in the case that zinc concentration is higher than the critical value.

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