首页 | 本学科首页   官方微博 | 高级检索  
     检索      

水泥膨润土泥浆固结体渗透性与微观结构的关系
引用本文:徐超,李丹,黄亮.水泥膨润土泥浆固结体渗透性与微观结构的关系[J].同济大学学报(自然科学版),2011,39(6):819-823.
作者姓名:徐超  李丹  黄亮
作者单位:1. 同济大学岩土与地下工程教育部重点试验室,上海,200092
2. 上海市基础工程公司,上海,200002
基金项目:上海市教委各类项目(项目编号:B308)
摘    要:采用压汞试验测定了水泥-膨润土泥浆固结体的孔隙结构特征,通过室内渗透试验测定了固结体的渗透系数。在试验结果基础上,分析了水泥、膨润土用量及固结体微观孔隙特征参数与其渗透性之间的联系。研究结果表明:水泥-膨润土泥浆固结体的渗透性主要受其临界孔径的控制,临界孔径越小,抗渗性越好。其余孔隙结构特征参数与固结体的渗透特性关系不大。随着水泥、膨润土用量的增加,固结体的临界孔径会逐步减少,并且,水泥用量对临界孔径的影响比膨润土更显著。

关 键 词:水泥-膨润土泥浆,微观结构,临界孔径,渗透系数,压汞试验
收稿时间:2010/3/12 0:00:00
修稿时间:4/2/2011 3:46:27 PM

Relationship Between Permeability and Microstructure of Cement Bentonite Slurry Concretion
XU Chao,LI Dan and HUANG Liang.Relationship Between Permeability and Microstructure of Cement Bentonite Slurry Concretion[J].Journal of Tongji University(Natural Science),2011,39(6):819-823.
Authors:XU Chao  LI Dan and HUANG Liang
Institution:Tongji University
Abstract:The structure of pores in the concretion of cement-bentonite slurry is measured by mercury-injection method , and the permeability coefficient of the concretion is measured by permeability test. According to the test results, the connections between the permeability and pore structure as well as the dosage of cenment and bentonite in the cement-bentonite slurry are analyzed. The analysis reveals that the permeability of cement-bentonite slurry concretion is controlled mainly by critical size of pores in the concretion . The smaller the critical size of pores, the stronger the permeability resistance of the concretion is, and other pore structure parameters have little influence on the permeability of the concretion. With the increase of the dosage of cement and bentonite, the critical pore size of the concretion will gradually decrease, and the dosage of cement has greater influence on the critical size of pores than that of bentonite.
Keywords:cement-bentonite slurry concretion  microstructure  critical pore diameter  coefficient of permeability  mercury intrusion porosimetry ( MIP )
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《同济大学学报(自然科学版)》浏览原始摘要信息
点击此处可从《同济大学学报(自然科学版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号