SYMPOSIA PAPER Published: 22 August 2013
STP156220120101

Hydraulic Testing of Multi-Component Geosynthetic Clay Liners

Source

Multi-component geosynthetic clay liners (GCLs) are a new variation of GCLs or GBR-Cs (Geosynthethic Clay Barriers—CEN and ISO definition) and are fast growing in the current sealing applications. During the manufacturing process, the “classic” geosynthetic clay liners are combined with either an adhered film, coating, or membrane that can decrease the hydraulic conductivity of the product but can also add other features. ASTM D5887 [2009, “Standard Test Method for Measurement of Index Flux through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter,” Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA] is the standard test method for hydraulic testing/testing the index flux through saturated geosynthetic clay liner specimens using a flexible wall permeameter. It gives guidance for testing procedures and apparatus but it is noted in the standard that it may not be applicable to GCL products with geomembrane backing(s). In this paper, results will be shown of the testing of the different multi-component geosynthetic clay liners using exactly the ASTM D5887 procedure. Further modifications will be discussed to allow testing according to this method and suggestions for a new method will be presented.

Author Information

Ehrenberg, Henning
NAUE GmbH & Co. KG, Espelkamp, DE
von Maubeuge, Kent, P.
NAUE GmbH & Co. KG, Espelkamp, DE
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Details
Developed by Committee: D35
Pages: 15–25
DOI: 10.1520/STP156220120101
ISBN-EB: 978-0-8031-7573-0
ISBN-13: 978-0-8031-7548-8