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Properties of clay subjected to secondary compression and cementation

二次压缩胶结粘土的性能

基本信息

批准号：
15560436
负责人：
UE Shunji
金额：
$ 1.98万
依托单位：
Tokuyama College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

In order to investigate properties of clay subjected to secondary compression and cementation. The author have attempted to describe the undrained shear behavior of quasi-overconsolidated clay induced by secondary consolidation or cementation.Shear strength of undisturbed marine clays with various plasticity indexes were investigated. A series of triaxial compression test were performed on disturbed sample under various consolidation stresses in order to simulated both normally consolidated and overconsolidated situation in the field.Method for estimating the amount of increase in undraind shear strength of clay due to secondary compression is described. The proposed method is proved to be valid for estimating the increase in shear strength of a reconsolidated clay and an undisturbed clay in direct shear test and triaxial shear test. Further, in order to investigate on temperature effects of normally consolidated clay, consolidation tests and triaxial shear tests were carried out. It was clear that volume change of clay induced by heating is in proportion to increment of temperature change. From the above results, method for predicting yield stress of clay subjected to temperature effects were proposed.

为了研究粘土在二次压缩和胶结作用下的特性。本文试图描述次固结或胶结作用引起的准超固结粘土的不排水抗剪特性，研究了不同塑性指数的原状海相粘土的抗剪强度。通过对扰动土样在不同固结应力下的三轴压缩试验，模拟了现场正常固结和超固结情况，提出了二次压缩引起的无排水抗剪强度增加量的估算方法。该方法可用于再固结粘土和原状粘土在直剪试验和三轴剪切试验中抗剪强度增长的估算。为了研究正常固结粘土的温度效应，进行了固结试验和三轴剪切试验。结果表明，加热引起的粘土体积变化与温度变化的增量成正比。在此基础上，提出了温度作用下粘土屈服应力的预测方法。

项目成果

期刊论文数量（42）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Research on improvement of the weathered soil

风化土改良研究

DOI：
发表时间：
2006
期刊：
Proceedings of the 41th Japan national conference on geotechnical engineering
影响因子：
0
作者：
Shunji Ue;Haruo Fujiwara;Keiji Kuwajima;Yuji Yoshinaga;Yosinori Oka
通讯作者：
Yosinori Oka

団粒化剤とセメント系固化材を併用した風化したまさ土の地盤改良

凝结剂与水泥固化剂组合改良风化马萨土的地基