Standard Acceptance Testing Requirements Available for Geosynthetic
Standard Guide D 6495 for Acceptance Testing Requirements for
Geosynthetic Clay Liners provides guidelines on the acceptance
testing requirements for geosynthetic clay liner (GCL) materials
used to contain waste and water.
Developed by a task group of manufacturers, geotechnical testing
laboratories, regulating agencies, and GCL designers in Subcommittee
D35.04 on Geosynthetic Clay Liners in Committee D35 on Geosynthetics,
the guide suggests various ASTM test methods for a variety of
GCL material factors, such as:
--Grab tensile strength;
--Tensile strength, thickness, and density of geomembrane support
and backing; and
--Direct shear tests or peel strength tests (for needlepunched
The new ASTM D 6495 will enhance the users ability to specify
GCLs with confidence that the testing regime adequately addresses
the needs of the project, says task group chairman Kent von Maubeuge,
director of Product Marketing, Naue Fasertechnik GmbH & Co., Luebbecke,
Germany. The guideline provides for the most appropriate tests
to be conducted to ensure containment is maximized in liquid as
well as solid waste projects.
Recommended verifications for compliance with acceptable material
specifications are provided.
For further technical information, contact Kent von Maubeuge, Director of Product Marketing, Naue Fasertechnik GmbH & Co.
KG, Wartturmstr. 1, 32312 Luebbecke (+49-5741-4008-28; fax.: -84).
Committee D35 meets June 21-23 in Toronto, Ontario, Canada. For
meeting or membership details, contact manager Pat Picariello, ASTM (610/832-9720). //