Mehrdad Nahavandchi
Ph.D. Student in Environmental Planning, University of Tehran, Iran
Publications
-
Research Article
Hydraulic and Chemical Stability of Polypropylene Geotextile Filters in Saline Soil: Results from a Three-Stage Field Study
Author(s): Arezoo Salamatnia*, Hamzeh Saeedi and Mehrdad Nahavandchi
The Polypropylene geotextile filters are increasingly used in subsurface irrigation and drainage systems because of their cost-effectiveness and superior hydraulic performance compared to conventional gravel filters. This study evaluated the permeability and durability of these filters under saline soil conditions in Khuzestan Province, Iran. A three-stage field investigation assessed short-term (0–1 year), medium- term (5–10 years), and long-term (more than 20 years) performance. Samples were collected from three farms Mirza Kouchak Khan, Nakhil at Abadan Khorramshahr, and Salman Farsi and tested according to the Netherlands Standard NEN 7090 (KOMO method). The tested polypropylene filters had mean pore size ranges of 355–500 micrometers (type PP450) and 600–850 micrometers (type PP700). The short and medium term PP450 filters met the performance criteria of m.. Read More»

