首页> 外文期刊>Geotechnical testing journal >Non-Isothermal Moisture Movement in Unsaturated Kaolin: An Experimental and Theoretical Investigation
【24h】

Non-Isothermal Moisture Movement in Unsaturated Kaolin: An Experimental and Theoretical Investigation

机译:非饱和高岭土中的非等温水分运动:实验和理论研究

获取原文
获取原文并翻译 | 示例
       

摘要

Non isothermal moisture movement in unsaturated kaolin is investigated in a series of experiments. Vapour transfer is then empirically quantified, and its theoretical representation considered. A thermo-hydraulic cell is used to apply thermal and hydraulic gradients to confined specimens in a number of thermal gradient, thermal-hydraulic gradient, and isothermal-hydraulic tests. Transient measurements of the thermal regime are made, and end of test measurement of moisture content, porosity, and chemical composition from a number of identical tests run for different durations allow pseudo transient variations of these parameters to be established. In each of the tests, where a thermal gradient is applied, the accumulation of chloride ions in the hottest regions indicates a cyclic movement of vapour and liquid moisture. Estimated vapour fluxes are determined by consideration of overall moisture and conservative ion movements in the sealed thermal gradient tests. These vapour fluxes are then compared to those predicted by an established vapour flow theory, and a modification to this theory is proposed based on a variable enhancement factor.
机译:通过一系列实验研究了不饱和高岭土中的非等温水分运动。然后凭经验对蒸气传递进行量化,并考虑其理论表示。在多个热梯度,热-液压梯度和等温-液压测试中,使用热-液压单元将热和水梯度施加到受限的样品上。进行热态的瞬态测量,并在不同时间进行的许多相同测试中的水分含量,孔隙率和化学成分测试结束后,可以确定这些参数的伪瞬态变化。在每个应用热梯度的测试中,最热区域中氯离子的积累表明蒸汽和液体水分的循环运动。估计的蒸汽通量是在密封的热梯度测试中,通过考虑总体水分和保守的离子运动来确定的。然后将这些蒸气通量与已建立的蒸气流理论预测的蒸气通量进行比较,并基于可变的增强因子对该理论进行了修改。

著录项

  • 来源
    《Geotechnical testing journal》 |2011年第5期|p.514-525|共12页
  • 作者单位

    Lecturer, Geoenvironmental Research Centre, Cardiff School of Engineering, Cardiff Univ., Cardiff, CF24 3AA, Wales, UK;

    Formerly Geoenvironmental Research Centre, Cardiff School of Engineering, Cardiff Univ., UK;

    currently Dept. of Civil Engineering, Monash Univ., Melbourne, Victoria 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    unsaturated; vapour; temperature effects; laboratory tests;

    机译:非饱和;蒸气;温度效应;实验室测试;
  • 入库时间 2022-08-18 00:11:57

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号