ASTM D8204-18

Standard Practice for Burial and Retrieval of Samples in a Test Pad to Evaluate Installation Effects on Geosynthetic Clay Liners

SIGNIFICANCE AND USE
5.1 The ability to maintain design function (for example, barrier) or design properties (for example, peel strength, chemical resistance, etc.), or both, of a geosynthetic clay liner may be affected by damage to the physical structure of the GCL due to the rigors of field installation. The effect of damage may be assessed by analyzing specimens cut from sample(s) retrieved after installation in a representative test pad. Analysis may be performed with visual examination or laboratory testing of specimens from the control sample(s), and from the exhumed sample(s).  
5.2 A uniform practice for installing and retrieving representative sample(s) from a test pad is needed to assess installation damage using project-specific or generally accepted, representative materials and procedures. Damage of a specific grade and type of GCL under specific installation procedures may be assessed with sample(s) exhumed from a full-scale test pad.
SCOPE
1.1 This practice covers standardized procedures for obtaining samples of geosynthetic clay liners (GCLs) from a test pad for use in assessment of the effects immediately after installation caused only by the installation techniques. The assessment may include physical testing. This practice is applicable to GCLs only.  
1.2 This practice is limited to full-scale test pads, and does not address laboratory modeling of field conditions. This practice does not address which test method(s) to use for quantifying installation damage.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 14-Jul-2018
• ICS: 59.080.70 - Geotextiles
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.04 - Geosynthetic Clay Liners

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D8204 − 18
Standard Practice for
Burial and Retrieval of Samples in a Test Pad to Evaluate
1
Installation Effects on Geosynthetic Clay Liners
This standard is issued under the fixed designation D8204; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D2487 Practice for Classification of Soils for Engineering
Purposes (Unified Soil Classification System)
1.1 This practice covers standardized procedures for obtain-
D4429 Test Method for CBR (California Bearing Ratio) of
ing samples of geosynthetic clay liners (GCLs) from a test pad
3
Soils in Place (Withdrawn 2018)
for use in assessment of the effects immediately after installa-
D4439 Terminology for Geosynthetics
tion caused only by the installation techniques.The assessment
D5887/D5887M Test Method for Measurement of Index
may include physical testing. This practice is applicable to
Flux Through Saturated Geosynthetic Clay Liner Speci-
GCLs only.
mens Using a Flexible Wall Permeameter
1.2 This practice is limited to full-scale test pads, and does
D5888 Guide for Storage and Handling of Geosynthetic
not address laboratory modeling of field conditions. This
Clay Liners
practice does not address which test method(s) to use for
D5993 Test Method for Measuring Mass per Unit Area of
quantifying installation damage.
Geosynthetic Clay Liners
1.3 This standard does not purport to address all of the
D6072/D6072M Practice for Obtaining Samples of Geosyn-
safety concerns, if any, associated with its use. It is the thetic Clay Liners
responsibility of the user of this standard to establish appro-
D6102 Guide for Installation of Geosynthetic Clay Liners
priate safety, health, and environmental practices and deter- D6496/D6496M Test Method for Determining Average
mine the applicability of regulatory limitations prior to use.
Bonding Peel Strength Between Top and Bottom Layers
1.4 This international standard was developed in accor- of Needle-Punched Geosynthetic Clay Liners
dance with internationally recognized principles on standard-
D6768/D6768M Test Method for Tensile Strength of Geo-
ization established in the Decision on Principles for the synthetic Clay Liners
Development of International Standards, Guides and Recom-
D6913/D6913M Test Methods for Particle-Size Distribution
mendations issued by the World Trade Organization Technical
(Gradation) of Soils Using Sieve Analysis
4
Barriers to Trade (TBT) Committee.
2.2 GRI Standard:
GRI Guide GS11 Standard Guide for ConstructingTest Pads
2. Referenced Documents
to Assess Protection Materials Intended to Avoid
2
Geomembrane Puncture
2.1 ASTM Standards:
D1557 Test Methods for Laboratory Compaction Character-
3 3. Terminology
istics of Soil Using Modified Effort (56,000 ft-lbf/ft
3
(2,700 kN-m/m )) 3.1 Definitions:
3.1.1 geosynthetic clay liner (GCL), n—a manufactured
D1883 Test Method for California Bearing Ratio (CBR) of
Laboratory-Compacted Soils hydraulic barrier consisting of clay bonded to a layer or layers
D2216 Test Methods for Laboratory Determination of Water of geosynthetics.
(Moisture) Content of Soil and Rock by Mass
3.1.2 multi-component GCL, n—GCLwith an attached film,
coating, or membrane decreasing the hydraulic conductivity or
protecting the clay core, or both.
1
This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-
3.1.3 sample, n—(1) a portion of material that is taken for
thetics and is the direct responsibility of Subcommittee D35.04 on Geosynthetic
testing or for record purposes; (2) a group of specimens used,
Clay Liners.
Current edition approved July 15, 2018. Published July 2018. Originally
approved in 2018. DOI: 10.1520/D8204-18.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM www.astm.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from Geosynthetic Institute, 475 Kedron Avenue, Folsom, PA
the ASTM website. 19033-1208, http://www.geosynthetic-institute.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8204 − 18
orofobservationsmade,whichprovideinformationthatcanbe 6.2 Test Pad Configurations:
used for making statistical inferences about the population(s) 6.2.1 The test pad configuration is an important
from which the specimens are drawn. consideration, and Fig. 1 is crafted so as to present several of
the various
...