ASTM D6072-96(2002)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D6072–96 (Reapproved 2002)
Standard Guide for
Obtaining Samples of Geosynthetic Clay Liners
This standard is issued under the fixed designation D 6072; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.3 specimen, n—a specific portion of a material or
laboratory sample upon which a test is performed or which is
1.1 This practice covers procedures for sampling geosyn-
taken for that purpose (See Practice D 4354).
thetic clay liners (GCLs) for the purpose of laboratory testing.
3.1.4 For definitions of other geosynthetic terms used in this
These procedures are designed to ensure that representative
practice, refer to Terminology D 4439.
samples are obtained and properly packaged for submittal to a
testing laboratory.
4. Significance and Use
1.2 The procedures in this practice may be applied to
4.1 This practice provides a method by which samples of
samples of unhydrated GCLs obtained at the project site or at
GCL may be obtained for laboratory testing. The practice
the production facility, prior to shipment to the project site.
applies to materials obtained either at a job site or at a
1.3 It is assumed that the number of samples to be obtained
production facility.
has already been determined in the project specification,
4.2 GCL samples obtained in accordance with this practice
standard test method, or by prior agreement between the
will be considered representative of the actual manufactured
purchaser and seller. This practice covers only the methods for
GCL.
obtaining a pre-arranged number of samples and does not
4.3 The quantity of GCL received by the laboratory should
describe methods for obtaining individual specimens from the
be sufficient for the preparation of several representative test
sample.
specimens for a variety of standardized physical, hydraulic,
1.4 The values stated in SI units are to be regarded as the
and mechanical tests commonly performed on GCLs.
standard.
4.4 The procedures in this practice should be used by plant
1.5 This standard does not purport to address all of the
and field personnel for obtaining GCL samples for laboratory
safety concerns, if any, associated with its use. It is the
testing.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Procedure
bility of regulatory limitations prior to use.
5.1 In accordance with the project specifications or with
Practice D 4354, divide the shipment or other given quantity of
2. Referenced Documents
GCL into lots, and select lot and laboratory samples. This will
2.1 ASTM Standards:
2 usually involve the selection of a certain number of finished
D 4354 Practice for Sampling of Geosynthetics for Testing
2 GCL rolls from which samples will be cut.
D 4439 Terminology for Geosynthetics
5.2 Affix on the packaging of the GCL rolls to be sampled
D 4873 Guide forIdentification, Storage, and Handling of
2 adhesive labels or other markings which clearly identify that
Geosynthetic Rolls and Samples
the roll is to be sampled.
3. Terminology 5.3 Record the label information from each roll to be
sampled for future incorporation into within the quality
3.1 Definitions:
assurance/quality control (QA/QC) documentation for the
3.1.1 geosynthetic clay liner (GCL), n—a manufactured
GCL.
hydraulic barrier consisting of clay bonded to a layer or layers
5.4 Segregate the rolls identified for sampling. Refer to
of geosynthetics.
appropriateASTM standard practices for the proper equipment
3.1.2 sample, n—a portion of a material which is taken for
and techniques for handling the GCL rolls.
testing or for record purposes (See Practice D 4354).
5.5 Inspect the packaging of the selected GCL rolls for
damage. Describe and record the damage, if any.
This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-
5.6 Remove the outer packaging from the GCL as carefully
thetics and is the direct responsibility of Subcommittee D35.04 on Geosynthetic
as possible, taking precautions not to damage the GCL and to
Clay Liners.
preserve the packaging as much as possibl
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