Open AccessEvaluation of nonwoven geotextile as a filtration layer for internally unstable soils
Author(s) -
D. Wojtasik
Publication year - 2008
Publication title -
annals of warsaw university of life sciences-sggw. land reclamation
Language(s) - English
Resource type - Journals
eISSN - 2081-9617
pISSN - 1898-8857
DOI - 10.2478/v10060-008-0042-1
Subject(s) - geotextile , piezometer , filtration (mathematics) , soil water , geotechnical engineering , materials science , layer (electronics) , environmental science , composite material , geology , soil science , groundwater , mathematics , statistics , aquifer
Evaluation of nonwoven geotextile as a filtration layer for internally unstable soils Evaluation of nonwoven geotextile as a filtration layer for internally unstable soil. This paper presents the laboratory tested results evaluating the performance of three nonwoven geotextile material used as filtration layer to protect for three internally unstable soils. Test research was performed in apparatus ASTM-D-5101 (1990) which was modified through installed additional piezometers in distance 4 mm and 8 mm above geotextile material tested. Applied piezometers ensure measurements pressure in layer of soil situated near fabric. Laboratory test were performed for total hydraulic gradient in range i = 1 to 10. Base on the test result the relationship for the evaluation of the change soil gradient ratio (soil layers 17 and 4 mm above the geotextile) is proposed.