Standard Guide for Installation of Geosynthetic Clay Liners

SIGNIFICANCE AND USE
For optimum performance, GCLs must be installed in a manner that does not impact their physical, mechanical, or hydraulic properties.
This guide identifies the proper installation procedures and equipment for use by GCL designers, inspectors, and installers.
SCOPE
1.1 This guide covers directions for the installation of geosynthetic clay liners (GCLs) under field conditions typically present in environmental lining applications.
1.2 This guide contains general installation guidelines. It is not intended to replace project-specific installation requirements as found in the contract drawings or specifications. In the event of a conflict, the requirement of the project specifications will supersede the requirements of this guide.
1.3 This guide does not purport to establish specific procedure for all climatic, geographical, hydraulic, or topographical conditions that may exist at a site. Appropriate installation procedures under atypical field conditions should be modified as necessary to maintain the integrity of the GCL and adjacent lining system components.
1.4 Different GCLs have different materials of construction with different physical properties. The procedures contained in this guide, therefore, may not be universally applicable to all GCLs under all field conditions.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Jun-2012
Technical Committee
Current Stage
Ref Project

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ASTM D6102-12 - Standard Guide for Installation of Geosynthetic Clay Liners
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D6102 − 12
StandardGuide for
1
Installation of Geosynthetic Clay Liners
This standard is issued under the fixed designation D6102; 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 3. Terminology
1.1 This guide covers directions for the installation of 3.1 Definitions:For definitions of other geosynthetic terms
geosynthetic clay liners (GCLs) under field conditions typi- used in this guide, refer toTerminology D4439. For definitions
cally present in environmental lining applications. of soils terms, refer to Terminology D653.
3.2
1.2 This guide contains general installation guidelines. It is
3.3 geosynthetic clay liner (GCL), n—a manufactured hy-
not intended to replace project-specific installation require-
draulic barrier consisting of clay bonded to a layer or layers of
ments as found in the contract drawings or specifications. In
geosynthetics.
the event of a conflict, the requirement of the project specifi-
cations will supersede the requirements of this guide.
4. Significance and Use
1.3 This guide does not purport to establish specific proce-
4.1 For optimum performance, GCLs must be installed in a
dure for all climatic, geographical, hydraulic, or topographical
manner that does not impact their physical, mechanical, or
conditions that may exist at a site. Appropriate installation
hydraulic properties.
procedures under atypical field conditions should be modified
4.2 This guide identifies the proper installation procedures
as necessary to maintain the integrity of the GCL and adjacent
and equipment for use by GCL designers, inspectors, and
lining system components.
installers.
1.4 Different GCLs have different materials of construction
with different physical properties. The procedures contained in
5. Procedure
this guide, therefore, may not be universally applicable to all
5.1 The methods and equipment used for placement of the
GCLs under all field conditions.
GCL can vary, but the primary objective of the process is to
1.5 This standard does not purport to address all of the
minimize the potential for GCL damage. The placement
safety concerns, if any, associated with its use. It is the
methods and equipment should be evaluated appropriately
responsibility of the user of this standard to establish appro-
within this context.
priate safety and health practices and determine the applica-
5.2 Subgrade Preparation:
bility of regulatory limitations prior to use.
5.2.1 For projects where the GCL is to be placed over an
earthen subgrade, the subgrade surface must be prepared and
2. Referenced Documents
approved prior to installation in accordance either with project
2
2.1 ASTM Standards:
specifications or with this guide. The surface should be firm
D653 Terminology Relating to Soil, Rock, and Contained
and unyielding, with no abrupt elevation changes, voids and
Fluids
cracks, ice, or standing water.
D4439 Terminology for Geosynthetics
5.2.2 The subgrade surface should be smooth and free of
D5888 Guide for Storage and Handling of Geosynthetic
vegetation, sharp-edged rocks, stones, sticks, construction
Clay Liners
debris, and other foreign matter that could contact the GCL.
The subgrade surface shall be compacted in accordance with
the project specifications. At a minimum, the subgrade should
1
This guide is under the jurisdiction ofASTM Committee D35 on Geosynthetics
berolledwithasmooth-drumcompactorofsufficientweightto
and is the direct responsibility of Subcommittee D35.04 on Geosynthetic Clay
remove any excessive wheel ruts, footprints, or other abrupt
Liners.
grade changes. Excessive rutting should be clearly defined and
Current edition approved July 1, 2012. Published August 20126. Originally
quantified. In some cases 25 mm is the maximum rut depth
approved in 1997. Last previous edition approved in 2006 as D6102–06. DOI:
10.1520/D6102-12.
allowed. Furthermore, all protrusions extending more than 12
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mm from the subgrade surface shall either be removed,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
crushed, or pushed into the surface with a smooth-drum
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. compactor.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D6102 − 12
5.3 GCL Placement: zone is not contaminated with loose soil or other debris. The
5.3.1 All handling of the GCL at the job site should be overlap may requ
...

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