The Influence of Freezing and Thawing on the Permeability of Compacted Clays

这项研究建议是试图量化的影响， 影响渗透系数的因素很多 压实粘土位于一个环境受到反复 冷冻和解冻。在此过程中将采用两种类型的测试 研究：一维冷冻和三维冷冻。的 一维冻结室内试验较复杂，但效果较好 模拟现场条件。三维冷冻是 执行起来更简单和更经济。因此，比较 这些水的渗透系数的变化 测试是开发实用， 经济、可靠的测试程序。粘土薄片 将准备和研究测试程序中使用的，以便 获得基本知识以及冻融过程如何影响 压实粘土的水力传导性。

This research proposal is an attempt to quantify the effect of the many factors affecting the coefficient of hydraulic conductivity of compacted clays located in an environment subjected to repeated freezing and thawing. Two types of tests will be employed in this study: one-dimensional freezing and three-dimensional freezing. The one-dimensional freezing laboratory test is complicated but better simulate field conditions. The three-dimensional freezing is simpler and more economical to perform. Therefore, a comparison of the changes in the coefficient of hydraulic conductivity in these tests is an essential step in the development of practical, economical, and reliable testing procedure. Thin sections of clay used in the test program will be prepared and studied in order to obtain basic knowledge and how freeze/thaw process influence the hydraulic conductivity of compacted clays.