A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅱ）: Analyses of Diltancy Properties

Yang Xue-qiang; Liu Wen-zhi; Liu Zu-de; He Shi-xiu; Chen Shan-xiong

doi:10.3969/j.issn.1007-7162.2013.03.005

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A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅱ）: Analyses of Diltancy Properties

更新时间：2026-05-27

- A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅱ）: Analyses of Diltancy Properties
- Vol. 30, Issue 3, Pages: 23-29(2013)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1007-7162.2013.03.005
  CLC：
- Online First：30 September 2013，
  
  Published：2013
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杨雪强, 刘文治, 刘祖德, 何世秀, 陈善雄. 武汉原状粉质黏土与其重塑土的试验对比研究（Ⅱ）：剪胀特性分析[J]. 广东工业大学学报, 2013, 30(3): 23-29.

Yang Xue-qiang, Liu Wen-zhi, Liu Zu-de, et al. A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅱ）: Analyses of Diltancy Properties[J]. 2013, 30(3): 23-29.
杨雪强, 刘文治, 刘祖德, 何世秀, 陈善雄. 武汉原状粉质黏土与其重塑土的试验对比研究（Ⅱ）：剪胀特性分析[J]. 广东工业大学学报, 2013, 30(3): 23-29. DOI： 10.3969/j.issn.1007-7162.2013.03.005.

Yang Xue-qiang, Liu Wen-zhi, Liu Zu-de, et al. A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅱ）: Analyses of Diltancy Properties[J]. 2013, 30(3): 23-29. DOI： 10.3969/j.issn.1007-7162.2013.03.005.

摘要

以武汉沙湖粉质黏土为研究对象，在不同的加荷路径和固结排水条件下

对原状土和重塑土沿3种三轴试验加荷路径的剪胀关系进行了系统整理，结果表明：1）相对于重塑土体，原状土在剪缩区(d≥0)表现出更大的剪缩量.2）而在剪胀区(d<0)，相对复杂些，若原状土与重塑土均处于OCR≤2.0的弱超固结状态，原状土和重塑土表现出大致相同的剪胀量；若原状土处于较大的超固结OCR>2.0状态，而重塑土处于OCR≤2.0的弱超固结状态，则原状土样表现出的剪胀量明显大于重塑土样的剪胀量;3) 结合试验资料，对Cam-Clay、修正的Cam-Clay、Nova Cam-Clay和Rowe等剪胀方程进行了检测.

Abstract

Silty clay samples taken from Shahu of Wuhan beneath ground level 95 m were mainly tested

and the stress controlled triaxial shear device was used to test the natural and remoulded samples along three different loading paths under different consolidated drainage conditions respectively. The corresponding research results show that: 1) in diltancy range with the volume decreasing(d≥0)

relative to the remoulded soil

the natural soil presents a bigger volume decrease induced by stress ratio; 2) but in diltancy range with the volume increasing(d<0)

the testing observations are more complicated: when the natural and remoulded soil samples are in the state with OCR≤2.0 during triaxial shear process

the diltancy values of the natural soil samples almost equal the corresponding values of the remoulded soil samples

whereas when the natural soil samples are in the state with OCR>2.0 and the remoulded soil samples with OCR≤2.0 during shearing

the diltancy values of the natural soil samples are obvious bigger than those of the remoulded soil samples; 3) different types of diltancy equations such as Cam-Clay

modified Cam-Clay

Nova Cam-Clay

and Rowe

et al

are further examined and verified against the testing data.

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