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ASTM D8269-21

(Guide)

Standard Guide for the Use of Geocells in Geotechnical and Roadway Projects

Standard Guide for the Use of Geocells in Geotechnical and Roadway Projects

SIGNIFICANCE AND USE
5.1 This guide covers applications, support mechanisms, and design principles associated with geocells to help designers and engineers determine when and how to appropriately use this technology.  
5.2 A better understanding of the key design principles, material properties, mechanisms of improvement, and methodologies will help engineers and owners interested in using geocells understand the most efficient and appropriate ways to utilize this type of ground improvement for a variety of geotechnical-related applications.  
5.3 This guide does not preclude the judgment and practice of those competent in geotechnical design.
SCOPE
1.1 This guide is intended to cover basic considerations for the use of geocells in various geotechnical and roadway projects to bring a unified understanding of efficient and appropriate ways to utilize this type of ground improvement technology for a variety of geotechnical-related applications, including but not limited to: load support for pavements, subgrade improvement, slope stability, retaining walls, earth retention, and slope and channel protection. Engineers and owners interested in using this manufactured product can refer to the information in this guide to learn about key design principles, properties, mechanisms, and methodologies for applicable geotechnical applications. Geotechnical designs that incorporate geocells should take into consideration the specific attributes of each product. The engineer is encouraged to utilize design methodologies based on reliable test results and research.  
1.2 This guide offers a collection of information and does not recommend a course of action. This guide cannot replace education or experience, and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances.  
1.3 This guide is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this guide be applied without consideration of a project’s many unique aspects.  
1.4 The word “standard” in the title of this guide means only that this guide has been approved through the ASTM International consensus process.  
1.5 The values given in SI units are to be regarded as standard. Values in parentheses are for information only.  
1.6 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.  
1.7 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
Published
Publication Date
14-Jul-2021
ICS
93.080.01 - Road engineering in general
Technical Committee
D35 - Geosynthetics
Drafting Committee
D35.01 - Mechanical Properties
Current Stage
Ref Project

Relations

Refers
ASTM D5397-20 - Standard Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembranes Using Notched Constant Tensile Load Test
Effective Date
01-Jun-2020

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ASTM D8269-21 - Standard Guide for the Use of Geocells in Geotechnical and Roadway ProjectsASTM D8269-21 - Standard Guide for the Use of Geocells in Geotechnical and Roadway Projects
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ASTM D8269-21 - Standard Guide for the Use of Geocells in Geotechnical and Roadway Projects
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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.
Designation: D8269 − 21
Standard Guide for the
1
Use of Geocells in Geotechnical and Roadway Projects
This standard is issued under the fixed designation D8269; 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 1.7 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This guide is intended to cover basic considerations for
ization established in the Decision on Principles for the
the use of geocells in various geotechnical and roadway
Development of International Standards, Guides and Recom-
projects to bring a unified understanding of efficient and
mendations issued by the World Trade Organization Technical
appropriate ways to utilize this type of ground improvement
Barriers to Trade (TBT) Committee.
technology for a variety of geotechnical-related applications,
including but not limited to: load support for pavements,
2. Referenced Documents
subgrade improvement, slope stability, retaining walls, earth
retention, and slope and channel protection. Engineers and 2
2.1 ASTM Standards:
owners interested in using this manufactured product can refer
D1693 Test Method for Environmental Stress-Cracking of
to the information in this guide to learn about key design
Ethylene Plastics
principles, properties, mechanisms, and methodologies for
D3895 Test Method for Oxidative-Induction Time of Poly-
applicablegeotechnicalapplications.Geotechnicaldesignsthat
olefins by Differential Scanning Calorimetry
incorporate geocells should take into consideration the specific
D4355/D4355M Test Method for Deterioration of Geotex-
attributes of each product. The engineer is encouraged to
tiles by Exposure to Light, Moisture, and Heat in a Xenon
utilize design methodologies based on reliable test results and
Arc-Type Apparatus
research.
D4439 Terminology for Geosynthetics
1.2 This guide offers a collection of information and does
D4595 Test Method for Tensile Properties of Geotextiles by
not recommend a course of action. This guide cannot replace
the Wide-Width Strip Method
education or experience, and should be used in conjunction
D5199 Test Method for Measuring the Nominal Thickness
with professional judgment. Not all aspects of this guide may
of Geosynthetics
be applicable in all circumstances.
D5262 Test Method for Determining the Unconfined Ten-
sion Creep and Creep Rupture Behavior of Planar Geo-
1.3 This guide is not intended to represent or replace the
synthetics Used for Reinforcement Purposes
standard of care by which the adequacy of a given professional
D5397 Test Method for Evaluation of Stress Crack Resis-
service must be judged, nor should this guide be applied
without consideration of a project’s many unique aspects. tance of Polyolefin Geomembranes Using Notched Con-
stant Tensile Load Test
1.4 Theword“standard”inthetitleofthisguidemeansonly
D5721 Practice forAir-OvenAging of Polyolefin Geomem-
that this guide has been approved through the ASTM Interna-
branes
tional consensus process.
D5885/D5885M Test Method for Oxidative Induction Time
1.5 The values given in SI units are to be regarded as
of Polyolefin Geosynthetics by High-Pressure Differential
standard. Values in parentheses are for information only.
Scanning Calorimetry
D5994/D5994M TestMethodforMeasuringCoreThickness
1.6 This standard does not purport to address all of the
of Textured Geomembranes
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- D6392 Test Method for Determining the Integrity of Nonre-
priate safety, health, and environmental practices and deter- inforced Geomembrane Seams Produced Using Thermo-
mine the applicability of regulatory limitations prior to use. Fusion Methods
1 2
ThisguideisunderthejurisdictionofASTMCommitteeD35onGeosynthetics For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and is the direct responsibility of Subcommittee D35.01 on Mechanical Properties. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 15, 2021. Published August 2021. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8269-21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8269 − 21
D6992 Test Meth
...

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Test Method for Shrinkage Temperature of Wet Blue and Wet White

SIGNIFICANCE AND USE
5.1 This test method is designed to determine the temperature at which the Wet Blue or Wet White specimen experiences shrinkage. In this test method, shrinkage occurs as a result of hydrothermal denaturation of the collagen protein molecules which make up the fiber structure of the Wet Blue or Wet White. The shrinkage temperature of Wet Blue or Wet White is influenced by many different factors, most of which appear to affect the number and nature of crosslinking interactions between adjacent polypeptide chains of the collagen protein molecules. The value of the shrinkage temperature of Wet Blue or Wet White is commonly used as an indicator of the type of tannage or the degree of tannage, or both, of that particular Wet Blue or Wet White (especially for the more hydrothermally stable tannages such as chrome tannage).
SCOPE
1.1 This test method covers the determination of the shrinkage temperature of all types of Wet Blue and Wet White. The heating medium is water when the shrinkage temperature is at or below 98 °C. The heating medium is a glycerine-water solution when the shrinkage temperature is above 98 °C.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
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.

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