ROW: Filteration Behavior of Non-woven Geotextiles With Cap-Graded and Silty Sands

这一职业发展奖将使PI能够在一个新的领域工作，并增强她的研究能力。土工织物是岩土工程中一个相对较新、发展较快的领域。土工织物通常在排水应用中用作过滤介质，即当放置在土壤上时，它们防止土壤移动或侵蚀，同时允许水自由通过土壤和土工织物。然而，如果织物和土壤没有正确匹配，过滤器(在这种情况下是织物)可能会被土壤颗粒堵塞，水不会通过排水管。下水道因堵塞而失灵了。本项目将研究非织造土工织物在用于间隙级配和粉砂的排水应用时的过滤性能。本文将从宏观和微观两个角度研究非织造布(包括针刺和热粘)土工织物的保土堵水机理。PI将与德雷克塞尔大学的R.M.Koerner教授、Ecole Polytech的A.Rollin教授和锡拉丘兹大学的C.Tien教授合作，以加深对这一新研究领域的了解。该项目还将探讨拟议研究领域中的产业互动。

This career advancement award will enable the PI to work in a new area and enhance her research capabilities. The research deals with geotextiles, a relatively new and rapidly developing area in geotechnical engineering. Geotextiles are often used in drainage applications as a filter medium,i.e. when placed against soil they prevent the soil from moving or eroding, while allowing the free passage of water through the soil and the geotextile. However, if the fabric and soil are not properly matched, the filter (the fabric in this case) can become clogged with soil particles, and water will not pass through the drain. The drain has failed by clogging. This project will study the filtration behavior of nonwoven geotextiles when used in drainage applications with gap-graded and silty sands. The soil retention and clogging mechanism in nonwoven (both needle-punched and heat-bonded) geotextile fabric will be studied from macroscopic and microscopic points of view. The PI will work with Professors R.M. Koerner (Drexel University), A. Rollin (Ecole Polytechnique) and C. Tien (Syracuse University) to gain a deeper understanding in this new line of research. This project will also explore industrial interaction in the proposed area of study.