A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅰ）: Description of Experimental Results

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

doi:10.3969/j.issn.1007-7162.2013.01.004

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A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅰ）: Description of Experimental Results

更新时间：2026-05-27

- A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅰ）: Description of Experimental Results
- Vol. 30, Issue 1, Pages: 18-24(2013)
- 作者机构：
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- DOI：10.3969/j.issn.1007-7162.2013.01.004
  CLC：
- Online First：30 March 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（Ⅰ）：试验结果描述[J]. 广东工业大学学报, 2013, 30(1): 18-24.

Yang Xue-qiang, Liu Wen-zhi, Liu Zu-de, et al. A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅰ）: Description of Experimental Results[J]. 2013, 30(1): 18-24.
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（Ⅰ）：试验结果描述[J]. 广东工业大学学报, 2013, 30(1): 18-24. DOI： 10.3969/j.issn.1007-7162.2013.01.004.

Yang Xue-qiang, Liu Wen-zhi, Liu Zu-de, et al. A Contrastive Study of Natural and Remoulded Silty Clays in Wuhan（Ⅰ）: Description of Experimental Results[J]. 2013, 30(1): 18-24. DOI： 10.3969/j.issn.1007-7162.2013.01.004.

摘要

以武汉沙湖粉质黏土为研究对象，首先借助于高压固结仪，对重塑土和原状土进行了室内侧限的固结试验；其次利用改进的应力控制式常规三轴仪，在不同的加荷路径和排水条件下，对重塑土和原状土分别进行了常规三轴试验研究，并对试验资料进行了较为系统的分析.结果表明：1）原状土的侧压力系数约为0.56，超固结比约等于1.2，为弱超固结土体，其结构屈服压力稍大于其前期固结压力; 2）原状土初始的切线模量及其抗剪强度均高于重塑土相应的值; 3）在固结排水条件下的三轴剪切试验，原状土的剪胀量要小于重塑土的剪胀量

但在固结不排水条件下，原状土体的剪胀趋势却明显要高于重塑土的剪胀趋势.

Abstract

Silty clay samples taken 9.5 m beneath ground level from Shahu in Wuhan were mainly tested. Firstly

the high pressure consolidometer was used to conduct the

consolidation tests for both samples of natural silty clay and those of remoulded silty clay respectively. Secondly

stress controlled triaxial shear device was also used to test the samples of natural and remoulded silty clay along different loading paths under different drainage conditions. All testing data were analyzed and studied in detail. Experimental results show that: 1) natural silty clay is overconsolidated soil with OCR and lateral pressure coefficient being 1.2 and 0.56 respectively

and its structure yield strength is a little bit bigger than its preconsolidation pressure; 2) initial elastic m

odulus and shear strength of the natural soil are both higher than corresponding values of the remoulded soil; 3) for triaxial shearing under consolidated drainage conditions

the diltancy values causing volume increment of natural samples are usually smaller than the corresponding values of remtsiltoulded soil samples; but for triaxial shearing under consolidated undrainage status

the diltancy tendency for volume increment of the natural soil samples is more obvious than the corresponding diltancy tendency of the remoulded soil samples.

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