Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills

DU Yan-jun; FAN Ri-dong

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Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills

更新时间：2026-06-25

- Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills
- Vol. 32, Issue S1, (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： TU443
- Online First：16 May 2011，
  
  Published：2011
- 稿件说明：
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DU Yan-jun, FAN Ri-dong. Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills[J]. 2011, 32(S1).
DOI：

DU Yan-jun, FAN Ri-dong. Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills[J]. 2011, 32(S1). DOI：

摘要

膨润土系竖向隔离墙作为阻滞污染物的工程屏障有效且经济。采用沸石改性传统的土-膨润土竖向隔离墙存在抗腐蚀性弱等耐久性不足的同时，必须考虑其压缩、渗透等工程性质的变化。通过一维压缩固结试验，研究了不同沸石及膨润土掺量下膨润土系隔离墙材料的压缩固结和渗透特性。引入评价天然重塑黏土的压缩、渗透特性的归一化孔隙比e/eL和评价天然重塑黏土固有压缩特性的孔隙指数Iv两种归一化评价体系，进一步探讨了添加沸石改性前后膨润土系竖向隔离墙混合土的压缩和渗透特性。

Abstract

Soil-bentonite vertical cutoff walls are effective and economical as engineering barriers for geoenvironmental containment. The compressibility and permeability of zeolite-amended soil-bentonite vertical cutoff walls for the purpose of enhancing the chemical compatibility have not been well addressed. These two engineering properties of soil-bentonite backfills before and after amended with zeolite are assessed via a series of oedometer tests. The results are discussed using the generalized state parameter (i.e. e/eL) and the void index Iv

which are used to analyze the intrinsic properties of remolded clays.

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